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Zhang Z, Li Y, Zhao S, Qie M, Bai L, Gao Z, Liang K, Zhao Y. Rapid analysis technologies with chemometrics for food authenticity field: A review. Curr Res Food Sci 2024; 8:100676. [PMID: 38303999 PMCID: PMC10830540 DOI: 10.1016/j.crfs.2024.100676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 12/15/2023] [Accepted: 01/07/2024] [Indexed: 02/03/2024] Open
Abstract
In recent years, the problem of food adulteration has become increasingly rampant, seriously hindering the development of food production, consumption, and management. The common analytical methods used to determine food authenticity present challenges, such as complicated analysis processes and time-consuming procedures, necessitating the development of rapid, efficient analysis technology for food authentication. Spectroscopic techniques, ambient ionization mass spectrometry (AIMS), electronic sensors, and DNA-based technology have gradually been applied for food authentication due to advantages such as rapid analysis and simple operation. This paper summarizes the current research on rapid food authenticity analysis technology from three perspectives, including breeds or species determination, quality fraud detection, and geographical origin identification, and introduces chemometrics method adapted to rapid analysis techniques. It aims to promote the development of rapid analysis technology in the food authenticity field.
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Affiliation(s)
- Zixuan Zhang
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing, China
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-Product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yalan Li
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-Product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shanshan Zhao
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-Product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Mengjie Qie
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-Product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Lu Bai
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Zhiwei Gao
- Hangzhou Nutritome Biotech Co., Ltd., Hangzhou, China
| | - Kehong Liang
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Yan Zhao
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-Product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, China
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Subbaraj AK, Deb-Choudhury S, Pavan E, Realini CE. Volatile fingerprints of beef cooking methods using sol-gel-based solid-phase microextraction (SPME) and direct analysis in real-time mass spectrometry (DART-MS). RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2024; 38:e9655. [PMID: 38073203 DOI: 10.1002/rcm.9655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 12/18/2023]
Abstract
RATIONALE The aroma profile of food is a complex mixture of volatile compounds that constitutes a major component of the overall eating experience. The food service industry and chefs therefore constantly seek ways to investigate and thereby enhance the aroma profile. Oven cooking, sous vide and pan fry are three cooking methods of beef commonly practised by chefs. Near real-time analysis of volatile compounds from these three cooking methods will provide insight into respective volatile fingerprints and help improve cooking techniques. METHODS Volatile compounds from three beef cooking methods were captured using an in-house sol-gel based solid phase microextraction (SPME) method and analysed using direct analysis in real-time mass spectrometry (DART-MS). A volatile organic compound (VOC) standard was used to demonstrate successful implementation of the sol-gel coating technique. Volatile features discriminating the three cooking methods were shortlisted and statistically assessed by univariate and multivariate analyses. RESULTS The VOC standard was successfully adsorbed by the sol-gel method and detected by DART-MS. Hierarchical cluster analysis clearly demarcated three beef cooking methods based on their volatile fingerprints. Out of 65 significant features differentiating the cooking methods, 50 were at highest concentrations from pan-fry cooking only, followed by 14 with highest concentrations from oven cooking followed by pan frying. Sous vide followed by pan frying showed lowest concentrations of almost all volatile features. CONCLUSIONS The sol-gel-based solid-phase microextraction technique combined with DART-MS was successful in differentiating beef cooking methods based on their volatile fingerprints. A workflow for rapid assessment of the volatile profile from beef cooking methods was established, providing a baseline to further explore volatile profiles from other key ingredients.
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Affiliation(s)
- Arvind K Subbaraj
- Proteins and Metabolites Team, AgResearch Limited, Lincoln, New Zealand
| | | | - Enrique Pavan
- Food Technology and Processing Team, AgResearch Limited, Palmerston North, New Zealand
- Estación Experimental Agropecuaria Balcarce, Instituto Nacional de Tecnología Agropecuaria, Balcarce, Argentina
| | - Carolina E Realini
- Food Technology and Processing Team, AgResearch Limited, Palmerston North, New Zealand
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Lai YH, Wang YS. Advances in high-resolution mass spectrometry techniques for analysis of high mass-to-charge ions. MASS SPECTROMETRY REVIEWS 2023; 42:2426-2445. [PMID: 35686331 DOI: 10.1002/mas.21790] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 01/27/2022] [Accepted: 04/07/2022] [Indexed: 06/15/2023]
Abstract
A major challenge in modern mass spectrometry (MS) is achieving high mass resolving power and accuracy for precision analyses in high mass-to-charge (m/z) regions. To advance the capability of MS for increasingly demanding applications, understanding limitations of state-of-the-art techniques and their status in applied sciences is essential. This review summarizes important instruments in high-resolution mass spectrometry (HRMS) and related advances to extend their working range to high m/z regions. It starts with an overview of HRMS techniques that provide adequate performance for macromolecular analysis, including Fourier-transform, time-of-flight (TOF), quadrupole-TOF, and related data-processing techniques. Methodologies and applications of HRMS for characterizing macromolecules in biochemistry and material sciences are summarized, such as top-down proteomics, native MS, drug discovery, structural virology, and polymer analyses.
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Affiliation(s)
- Yin-Hung Lai
- Genomics Research Center, Academia Sinica, Taipei, Taiwan, R.O.C
- Department of Chemical Engineering, National United University, Miaoli, Taiwan, R.O.C
- Institute of Food Safety and Health Risk Assessment, National Yang Ming Chiao Tung University, Taipei, Taiwan, R.O.C
| | - Yi-Sheng Wang
- Genomics Research Center, Academia Sinica, Taipei, Taiwan, R.O.C
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Dou Q, Liu W, Xiang P, Zhao J. Quantitative Analysis of Three Synthetic Cannabinoids MDMB-4en-PINACA, ADB-BUTINACA, and ADB-4en-PINACA by Thermal-Assisted Carbon Fiber Ionization Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2023; 34:2316-2322. [PMID: 37641897 DOI: 10.1021/jasms.3c00229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Recently, synthetic cannabinoids (SCs) have emerged as new psychoactive substances (NPS) and have been frequently added to e-liquids, leading to their abuse. In order to detect SCs in e-liquids quickly and accurately, a thermal-assisted carbon fiber ionization mass spectrometry technique has been developed. The introduction of a heat source helps to reduce the matrix effects. The results indicate that the ratio of the slope of the matrix curve (e-liquids matrix) and the standard curve (methanol solution) for SCs analysis is close to 1, indicating a minimized matrix effect of this method. Furthermore, this method exhibits good quantitative ability when applied to real samples. It does not require sample pretreatment and is sensitive enough to directly quantify SCs in e-liquids. Our method is characterized by the ability to achieve rapid and direct quantitative analysis with minimized matrix effects. It provides a rapid and simple method for analyzing SCs in e-liquids.
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Affiliation(s)
- Quanlu Dou
- Department of Forensic Toxicology, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
- School of Pharmacy, Yantai University, Yantai 264005, China
| | - Wanhui Liu
- School of Pharmacy, Yantai University, Yantai 264005, China
| | - Ping Xiang
- Department of Forensic Toxicology, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - Junbo Zhao
- Department of Forensic Toxicology, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
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Zheng Y, Zuo Q, Xiang Z, Huang Y, Zhang Z. Improvement in the performance of focusing plasma desorption ionization by altering its counter electrode. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2023; 37 Suppl 1:e9458. [PMID: 36523174 DOI: 10.1002/rcm.9458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
RATIONALE Plasma-based ionization sources play a vital role in rapidly analyzing diverse compounds without extensive sample pretreatment. In contrast to other sources, DC voltage-based ionizations are more advantageous due to their high analytical sensitivity and good tandem with commercially available mass spectrometers without extra power supplies. However, their performance is at the risk of high current DC voltage and helium flow rate, which poses significant challenges to practical operation and increased expense. METHODS In this work, we propose a novel focusing plasma desorption ionization (FPDI) in which a visible plasma beam is favorably generated between a conducting wire in a polymeric tube and a counter electrode composed of metal mesh and filter paper drilled with holes. A systematic investigation has been conducted on the influences of the geometry of drilled holes in filter paper, applied DC voltage, helium flow rate, and filter paper size. The optimized system is used to analyze various pesticides in fluid foodstuffs. RESULTS Compared to metal mesh and conducting paper as the counter electrode for FPDI-MS, combining metal mesh and filter paper drilled holes improved the analysis sensitivity by a factor of more than five. By applying the developed protocol for determining pesticides in complex matrixes such as orange juice and milk, a limit of detection as low as 1.3-3.0 ng mL-1 could be achieved. CONCLUSIONS A novel FPDI-MS technique has been developed by combining metal mesh and filter paper drilled with holes as the counter electrode and sample carrier. The corresponding improvement in analysis sensitivity facilitates the future expansion of FPDI-MS applications into different pesticides and other compounds in complex matrixes.
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Affiliation(s)
- Yajun Zheng
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, China
| | - Qianqian Zuo
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, China
| | - Zhicheng Xiang
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, China
| | - Yajie Huang
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, China
| | - Zhiping Zhang
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, China
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Wang T, Li H, Allen N, Ferraro I, Li A. Ultra-low current electrospray ionization of chloroform solution for the analysis of perfluorinated sulfonic acids. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2023; 37 Suppl 1:e9501. [PMID: 36879515 DOI: 10.1002/rcm.9501] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/13/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
RATIONALE Femtoamp and picoamp electrospray ionization (ESI) characteristics of a nonpolar solvent were explored. The direct ESI mass spectrometry analysis of chloroform extract solution enabled rapid analysis of perfluorinated sulfonic acid analytes in drinking water. METHODS Neat chloroform solvent and extracts were directly used in a typical wire-in ESI setup using micrometer emitter tips. Ionization currents were measured with femtoamp sensitivity while ramping the spray voltage from 0 to -5000 V. Methanol was used as a comparison to illustrate the characteristics of electrospraying chloroform. The effects of spray voltage and inlet temperature were studied. A liquid-liquid extraction workflow was developed to analyze perfluorooctanoate sulfonate (PFOS) in drinking water using an ion-trap mass spectrometer. RESULTS The ionization onset of chloroform solution was 41 ± 17 fA at 300 V. The ionization current gradually increased with voltage while remaining below 100 pA when using voltages up to -5000 V. The ion signal of PFOS was significantly enhanced to improve the limit of detection (LoD) to 25 ppt in chloroform. Coupled with a liquid-liquid extraction workflow, LoD of 0.38-5.1 ppt and a quantitation range of 5-400 ppt were achieved for perfluorinated sulfonic compounds in 1-ml water samples. CONCLUSIONS Femtoamp and picoamp modes expand the solvent compatibility range of ESI and can enable quantitative analysis in parts per trillion (ppt) concentrations.
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Affiliation(s)
| | - Huishan Li
- University of New Hampshire, Durham, NH, USA
| | | | - Ian Ferraro
- University of New Hampshire, Durham, NH, USA
| | - Anyin Li
- University of New Hampshire, Durham, NH, USA
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Guillén-Alonso H, García-Rojas NS, Winkler R. Guided analysis of ambient ionization mass spectrometry data with the MQ_Assistant. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2023; 37:e9590. [PMID: 37430449 DOI: 10.1002/rcm.9590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/04/2023] [Accepted: 05/19/2023] [Indexed: 07/12/2023]
Abstract
RATIONALE Ambient ionization mass spectrometry (AIMS) delivers realistic data from samples in their native state. In addition, AIMS methods reduce time and costs for sample preparation and have less environmental impact. However, AIMS data are often complex and require substantial processing before interpretation. METHODS We developed an interactive R script for guided mass spectrometry (MS) data processing. The "MQ_Assistant" is based on MALDIquant, a popular R package for MS data processing. In each step, the user can try and preview the effect of chosen parameters before deciding on the values with the best result and proceeding to the next stage. The outcome of the MQ_Assistant is a feature matrix that can be further analyzed in R and statistics tools such as MetaboAnalyst. RESULTS Using 360 AIMS example spectra, we demonstrate the step-by-step processing for creating a feature matrix. In addition, we show how to visualize the results of three biological replicates of a plant-microbe interaction between Arabidopsis and Trichoderma as a heatmap using R and upload them to MetaboAnalyst. The final parameter set can be saved for reuse in MALDIquant workflows of similar data. CONCLUSIONS The MQ_Assistant helps novices and experienced users to develop workflows for (AI)MS data processing. The interactive procedure supports the quick finding of appropriate settings. These parameters can be exported and reused in future projects. The stepwise operation with visual feedback also suggests the use of the MQ_Assistant in education.
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Affiliation(s)
- Héctor Guillén-Alonso
- Cinvestav UGA-Langebio, Irapuato, Guanajuato, Mexico
- Department of Biochemical Engineering, National Technological Institute, Celaya, Mexico
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Lan J, Greter G, Streckenbach B, Wanner B, Arnoldini M, Zenobi R, Slack E. Non-invasive monitoring of microbiota and host metabolism using secondary electrospray ionization-mass spectrometry. CELL REPORTS METHODS 2023; 3:100539. [PMID: 37671025 PMCID: PMC10475793 DOI: 10.1016/j.crmeth.2023.100539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 05/08/2023] [Accepted: 06/28/2023] [Indexed: 09/07/2023]
Abstract
The metabolic "handshake" between the microbiota and its mammalian host is a complex, dynamic process with major influences on health. Dissecting the interaction between microbial species and metabolites found in host tissues has been a challenge due to the requirement for invasive sampling. Here, we demonstrate that secondary electrospray ionization-mass spectrometry (SESI-MS) can be used to non-invasively monitor metabolic activity of the intestinal microbiome of a live, awake mouse. By comparing the headspace metabolome of individual gut bacterial culture with the "volatilome" (metabolites released to the atmosphere) of gnotobiotic mice, we demonstrate that the volatilome is characteristic of the dominant colonizing bacteria. Combining SESI-MS with feeding heavy-isotope-labeled microbiota-accessible sugars reveals the presence of microbial cross-feeding within the animal intestine. The microbiota is, therefore, a major contributor to the volatilome of a living animal, and it is possible to capture inter-species interaction within the gut microbiota using volatilome monitoring.
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Affiliation(s)
- Jiayi Lan
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Giorgia Greter
- Department of Health Sciences and Technology, ETH Zurich, 8093 Zurich, Switzerland
| | - Bettina Streckenbach
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | | | - Markus Arnoldini
- Department of Health Sciences and Technology, ETH Zurich, 8093 Zurich, Switzerland
| | - Renato Zenobi
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Emma Slack
- Department of Health Sciences and Technology, ETH Zurich, 8093 Zurich, Switzerland
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Géhin C, Tokarska J, Fowler SJ, Barran PE, Trivedi DK. No skin off your back: the sampling and extraction of sebum for metabolomics. Metabolomics 2023; 19:21. [PMID: 36964290 PMCID: PMC10038389 DOI: 10.1007/s11306-023-01982-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 02/19/2023] [Indexed: 03/26/2023]
Abstract
INTRODUCTION Sebum-based metabolomics (a subset of "sebomics") is a developing field that involves the sampling, identification, and quantification of metabolites found in human sebum. Sebum is a lipid-rich oily substance secreted by the sebaceous glands onto the skin surface for skin homeostasis, lubrication, thermoregulation, and environmental protection. Interest in sebomics has grown over the last decade due to its potential for rapid analysis following non-invasive sampling for a range of clinical and environmental applications. OBJECTIVES To provide an overview of various sebum sampling techniques with their associated challenges. To evaluate applications of sebum for clinical research, drug monitoring, and human biomonitoring. To provide a commentary of the opportunities of using sebum as a diagnostic biofluid in the future. METHODS Bibliometric analyses of selected keywords regarding skin surface analysis using the Scopus search engine from 1960 to 2022 was performed on 12th January 2023. The published literature was compartmentalised based on what the work contributed to in the following areas: the understanding about sebum, its composition, the analytical technologies used, or the purpose of use of sebum. The findings were summarised in this review. RESULTS Historically, about 15 methods of sampling have been used for sebum collection. The sample preparation approaches vary depending on the analytes of interest and are summarised. The use of sebum is not limited to just skin diseases or drug monitoring but also demonstrated for other systemic disease. Most of the work carried out for untargeted analysis of metabolites associated with sebum has been in the recent two decades. CONCLUSION Sebum has a huge potential beyond skin research and understanding how one's physiological state affects or reflects on the skin metabolome via the sebaceous glands itself or by interactions with sebaceous secretion, will open doors for simpler biomonitoring. Sebum acts as a sink to environmental metabolites and has applications awaiting to be explored, such as biosecurity, cross-border migration, localised exposure to harmful substances, and high-throughput population screening. These applications will be possible with rapid advances in volatile headspace and lipidomics method development as well as the ability of the metabolomics community to annotate unknown species better. A key issue with skin surface analysis that remains unsolved is attributing the source of the metabolites found on the skin surface before meaningful biological interpretation.
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Affiliation(s)
- C Géhin
- School of Chemistry, Manchester Institute of Biotechnology, University of Manchester, Princess Street, Manchester, M1 7DN, UK
| | - J Tokarska
- School of Chemistry, Manchester Institute of Biotechnology, University of Manchester, Princess Street, Manchester, M1 7DN, UK
| | - S J Fowler
- Department of Respiratory Medicine, Manchester University Hospitals NHS Foundation Trust, Manchester, UK
- Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, UK
- NIHR Manchester Biomedical Research Centre, Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - P E Barran
- School of Chemistry, Manchester Institute of Biotechnology, University of Manchester, Princess Street, Manchester, M1 7DN, UK
| | - D K Trivedi
- School of Chemistry, Manchester Institute of Biotechnology, University of Manchester, Princess Street, Manchester, M1 7DN, UK.
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Shiea J, Lin HJ, Bhat SM, Lee CY, Huang MZ, Ponnusamy VK, Cheng SC. Thin layer chromatography/desorption flame-induced atmospheric pressure chemical ionization/mass spectrometry for the analysis of volatile and semi-volatile mixtures. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2022; 36:e9409. [PMID: 36194496 DOI: 10.1002/rcm.9409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 09/27/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
UNLABELLED Flame-induced atmospheric pressure chemical ionization (FAPCI) has been used to directly characterize chemical compounds on a glass rod and drug tablet surfaces. In this study, FAPCI was further applied to interface thin layer chromatography (TLC) and mass spectrometry (MS) for mixture analysis. METHODS A micro-sized oxyacetylene flame was generated using a small concentric tube system. Hot gas flow and primary reactive species from the micro-flame were directed toward a developed TLC gel plate to thermally desorb and ionize analytes on the gel surface. The resulting analyte ions subsequently entered the MS inlet for detection. RESULTS A 1-1.5-mm-wide light-brown line was observed on the TLC plate after the desorption FAPCI/MS (DFAPCI/MS) analysis, revealing that the gel surface withstood a high temperature from the impact of the micro-flame. Volatile and semi-volatile chemical compounds, including amine and amide standards, drugs, and aromatherapy oils, were successfully desorbed, ionized, and detected using this TLC/DFAPCI/MS. The limit of detection of TLC-DFAPCI/MS was determined to be 5 ng/spot for dibenzylamine and ethenzamide. CONCLUSIONS TLC/DFAPCI/MS is one of the simplest TLC-MS interfaces showing the advantages such as low costs and an easy set up. The technique is useful for characterizing thermally stable volatile and semi-volatile compounds in a mixture.
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Affiliation(s)
- Jentaie Shiea
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
- Rapid Screening Research Center for Toxicology and Biomedicine, National Sun Yat-Sen University, Kaohsiung, Taiwan
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hsing-Jung Lin
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan
| | | | - Chi-Yang Lee
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Min-Zong Huang
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Vinoth Kumar Ponnusamy
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Sy-Chyi Cheng
- Biotechnology Center in Southern Taiwan, Academia Sinica, Tainan, Taiwan
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
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Wang X, Hebert DD, Runsewe DO, Pohlman GE, Hoffmann WD, Irvin JA. Electroactive Polymer-Based Spray Ionization for Direct Mass Spectrometric Analysis. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2022; 33:1840-1849. [PMID: 36149251 DOI: 10.1021/jasms.2c00148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Electrochemically deposited electroactive polymer (EAP) films were investigated for their potential to enhance the performance of ambient ionization mass spectrometry (MS). Several EAPs of varying hydrophobicity were evaluated, including the superhydrophobic polymer poly[3,4-(2-dodecylethylenedioxy)thiophene] (PEDOT-C12). The EAPs were electropolymerized onto indium tin oxide-coated glass, placed in front of the inlet of a mass spectrometer, and charged to 3.5-4.5 kV. Analyte solutions were then applied to the surface, initiating ionization events. Analytes including peptides and small molecule pharmaceuticals were studied in 0.1% formic acid in methanol/water ("spray solvent") as well as in synthetic biological fluid matrices, using both EAP spray ionization (EAPSI) and paper spray ionization (PSI). Each EAPSI analysis required as little as 0.1 μL of solution, and the resulting sprays were stable and reproducible. The sensitivity, limit of detection (LOD), and limit of quantification (LOQ) were evaluated using bradykinin, cannabinol, and cannabidiol, which were prepared in pure solvents, artificial urine, and artificial saliva. The limits of detection and quantitation for EAPSI were improved relative to PSI by 1-2 orders of magnitude for analytes prepared in methanol/water and on the same order of magnitude as PSI for analytes prepared in artificial saliva and urine. This EAP-based spray ionization technique offers possibilities for rapid MS analysis with small sample sizes, high accuracy, and miniaturization of MS instruments.
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Affiliation(s)
- Xu Wang
- Materials Science, Engineering and Commercialization Program, Texas State University, San Marcos, Texas 78666, United States
| | - David D Hebert
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
| | - Damilola O Runsewe
- Materials Science, Engineering and Commercialization Program, Texas State University, San Marcos, Texas 78666, United States
| | - Gabriel E Pohlman
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
| | - William D Hoffmann
- Materials Science, Engineering and Commercialization Program, Texas State University, San Marcos, Texas 78666, United States
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
| | - Jennifer A Irvin
- Materials Science, Engineering and Commercialization Program, Texas State University, San Marcos, Texas 78666, United States
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
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Cody RB. Aperture Size Influences Oxidation in Positive-Ion Nitrogen Direct Analysis in Real Time Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2022; 33:1329-1334. [PMID: 35679328 DOI: 10.1021/jasms.2c00115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Direct Analysis in Real Time (DART) mass spectrometry commonly uses helium as the DART gas. With the looming helium shortage, other gases are being evaluated for DART. Nitrogen is inexpensive and readily available, making it a desirable alternative. However, NO+ reagent ions present in positive-ion nitrogen DART result in extensive oxidation for many compounds. The DART source uses a ceramic insulator cap to protect the operator from electrical shock. The most common cap has an aperture with a 2.5 mm inner diameter, through which the gas exits the DART source. By using a cap with a narrow (0.5 mm) ID, oxidation can be significantly reduced for nitrogen DART. The 0.5 mm cap is hypothesized to reduce back-diffusion of atmospheric oxygen into the DART source, with a reduction in the relative abundance of NO+ and increase in the relative abundance of [(H2O)2 + H]+ as the reactive species responsible for ionization of the analytes.
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Affiliation(s)
- Robert B Cody
- JEOL USA Inc 11 Dearborn Road, Peabody, Massachusetts 01960, United States
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Hu B, Yao ZP. Electrospray ionization mass spectrometry with wooden tips: A review. Anal Chim Acta 2022; 1209:339136. [PMID: 35569859 DOI: 10.1016/j.aca.2021.339136] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/30/2021] [Accepted: 09/30/2021] [Indexed: 12/17/2022]
Abstract
Electrospray ionization (ESI) is a powerful ionization technique in mass spectrometry (MS). There has been an increasing interest for the new development of ESI technique to extend its applications. ESI-MS with wooden tips (wooden-tip ESI-MS), an ESI technique invented in 2011, enabled not only new applications but also new insights into the ESI mechanism. In this review, the technical aspects of wooden-tip ESI-MS are described, the new features of wooden-tip ESI-MS for sampling and ionization of analytes are highlighted, and the important applications of wooden-tip ESI-MS in various fields in the past 10 years, including food safety, forensic investigation, environmental analysis, biomedical analysis and protein study, are summarized. The perspectives on the further development and applications of wooden-tip ESI-MS are also discussed.
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Affiliation(s)
- Bin Hu
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou, 510632, China.
| | - Zhong-Ping Yao
- State Key Laboratory for Chemical Biology and Drug Discovery, Research Institute for Future Food and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China; State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation) and Shenzhen Key Laboratory of Food Biological Safety Control, Shenzhen Research Institute of The Hong Kong Polytechnic University, Shenzhen, 518057, China.
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14
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Kaeslin J, Zenobi R. Resolving isobaric interferences in direct infusion tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2022; 36:e9266. [PMID: 35124854 PMCID: PMC9286799 DOI: 10.1002/rcm.9266] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/31/2022] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
RATIONALE The co-fragmentation of precursors in direct infusion (DI) tandem high-resolution mass spectrometry (HRMS) can complicate the fragment spectra and consequently lead to false hits during compound identification. METHODS The method herein described, termed IQAROS (incremental quadrupole acquisition to resolve overlapping spectra), modulates the intensities of precursors and fragments by stepwise movement of the quadrupole isolation window over the mass-to-charge (m/z) range of the precursors. The modulated signals are then deconvoluted by a linear regression model to reconstruct the fragment spectra with less interference. The hardware to demonstrate the use of IQAROS was an orbitrap with electrospray ionization (ESI) or secondary electrospray ionization (SESI), although the method can also be applied to other ionization techniques or mass analyzers. RESULTS Assessing the performance of IQAROS with isobaric standards revealed that the reconstructed fragment spectra match with spectra acquired from the pure standards and that more compounds were correctly identified compared with the classical approach with the quadrupole centered at the m/z value of the precursor of interest. Moreover, the strength of IQAROS is exemplified by the identification of two isobaric biomarkers directly from a breath sample with SESI-HRMS. CONCLUSIONS With IQAROS, cleaner fragment spectra of co-fragmenting isobars during DI-HRMS analysis can be obtained. IQAROS can easily be set up by the standard graphical user interface of the instrument. Therefore, it facilitates the characterization of features of interest in samples analyzed by DI-HRMS, for example, in high-throughput or real-time metabolomics.
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Affiliation(s)
- Jérôme Kaeslin
- Department of Chemistry and Applied BiosciencesETH ZürichZürichSwitzerland
| | - Renato Zenobi
- Department of Chemistry and Applied BiosciencesETH ZürichZürichSwitzerland
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15
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Omotola EO, Oluwole AO, Oladoye PO, Olatunji OS. Occurrence, detection and ecotoxicity studies of selected pharmaceuticals in aqueous ecosystems- a systematic appraisal. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 91:103831. [PMID: 35151848 DOI: 10.1016/j.etap.2022.103831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 01/31/2022] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Pharmaceutical compounds (PCs) have globally emerged as a significant group of environmental contaminants due to the constant detection of their residues in the environment. The main scope of this review is to fill the void of information on the knowledge on the African occurrence of selected PCs in environmental matrices in comparison with those outside Africa and their respective toxic actions on both aquatic and non-aquatic biota through ecotoxicity bioassays. To achieve this objective, the study focused on commonly used and detected pharmaceutical drugs (residues). Based on the conducted literature survey, Africa has the highest levels of ciprofloxacin, sulfamethoxazole, lamivudine, acetaminophen, and diclofenac while Europe has the lowest of all these PC residues in her physical environments. For ecotoxicity bioassays, the few data available are mostly on individual groups of pharmaceuticals whereas there is sparsely available data on their combined forms.
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Affiliation(s)
- Elizabeth Oyinkansola Omotola
- School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000, South Africa; Department of Chemical Sciences, Tai Solarin University of Education, Ijebu Ode PMB 2118, Ogun State, Nigeria.
| | | | - Peter Olusakin Oladoye
- Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th St, Miami, FL 33199, United States
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16
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Kim JY, Lim H, Moon DW. Mass Spectrometry Imaging of Small Molecules from Live Cells and Tissues using Nanomaterials. SURF INTERFACE ANAL 2022. [DOI: 10.1002/sia.7070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jae Young Kim
- School of Electronic and Electrical Engineering, College of IT Engineering Kyungpook National University Daegu Republic of Korea
| | - Heejin Lim
- Department of New Biology Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of Korea
| | - Dae Won Moon
- Department of New Biology Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of Korea
- Dschool of Undergraduate Studies, DGIST Daegu Republic of Korea
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17
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Cody RB. Qualitative Analysis of Acid Salts with Direct Analysis in Real Time Mass Spectrometry by Conversion to the Free Acid Form. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2022; 33:207-210. [PMID: 34935389 DOI: 10.1021/jasms.1c00341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Organic acid salts typically have very low volatility and are not well suited for analysis by Direct Analysis in Real Time mass spectrometry (DART-MS). However, qualitative analysis of organic acid salts by DART can be facilitated by the addition of a strong acid to convert the compounds to the free acid form. Examples are presented here for inorganic salts (sodium and potassium perchlorate) and several organic salts, including three disodium salts and a mixed sodium/potassium salt.
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Affiliation(s)
- Robert B Cody
- JEOL USA, Inc. 11 Dearborn Road, Peabody, Massachusetts 01960 United States
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18
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Chen L, Ghiasvand A, Sanz Rodriguez E, Innis PC, Paull B. Nanomaterial-assisted thread-based isotachophoresis with on-thread solute trapping. Analyst 2022; 147:1944-1951. [DOI: 10.1039/d2an00287f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This research describes a nanomaterial-assisted TB-ITP setup for the clean-up, preconcentration, and trapping of alkaloids in biological fluids, followed by their on-thread DESI-MS determination.
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Affiliation(s)
- Liang Chen
- Australian Centre for Research on Separation Science, School of Physical Sciences, University of Tasmania, Hobart, Tasmania 7001, Australia
- ARC Centre of Excellence for Electromaterials Sciences (ACES), School of Natural Sciences, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Alireza Ghiasvand
- Australian Centre for Research on Separation Science, School of Physical Sciences, University of Tasmania, Hobart, Tasmania 7001, Australia
- ARC Centre of Excellence for Electromaterials Sciences (ACES), School of Natural Sciences, University of Tasmania, Hobart, Tasmania 7001, Australia
- Department of Chemistry, Lorestan University, Khorramabad, Iran
| | - Estrella Sanz Rodriguez
- Australian Centre for Research on Separation Science, School of Physical Sciences, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Peter C. Innis
- ARC Centre of Excellence for Electromaterials Science (ACES), Intelligent Polymer Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Brett Paull
- Australian Centre for Research on Separation Science, School of Physical Sciences, University of Tasmania, Hobart, Tasmania 7001, Australia
- ARC Centre of Excellence for Electromaterials Sciences (ACES), School of Natural Sciences, University of Tasmania, Hobart, Tasmania 7001, Australia
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19
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Cho YT, Su H, Wu CY, Huang TL, Jeng J, Huang MZ, Wu DC, Shiea J. Molecular Mapping of Sebaceous Squalene by Ambient Mass Spectrometry. Anal Chem 2021; 93:16608-16617. [PMID: 34860507 DOI: 10.1021/acs.analchem.1c03983] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Squalene (SQ), a highly unsaturated sebaceous lipid, plays an important role in protecting human skin. To better understand the role of SQ in clinical medicine, an efficient analytical approach is needed to comprehensively study the distribution of SQ on different parts of the skin. In this study, sebaceous lipids were collected from different epidermal areas of a volunteer with sampling probes. Thermal desorption-electrospray ionization/mass spectrometry (TD-ESI/MS) was then used to characterize the lipid species on the probes, and each TD-ESI/MS analysis was completed within a few seconds without any sample pretreatment. The molecular mapping of epidermal squalene on whole-body skin was rendered by scaling the peak area of the extracted ion current (EIC) of SQ based on a temperature color gradient, where colors were assigned to the 1357 sampling locations on a 3D map of the volunteer. The image showed a higher SQ distribution on the face than any other area of the body, indicating the role of SQ in protecting facial skin. The results were in agreement with previous studies using SQ as a marker to explore sebaceous activity. The novelty and significance of this work are concluded as two points: (1) direct and rapid detection of all major classes of sebaceous lipids, including the unsaturated hydrocarbons (SQ) and nonpolar lipids (e.g., cholesterol). The results are unique compared to other conventional and ambient ionization mass spectrometry methods and (2) this is the first study to analyze SQ distribution on the whole-body skin by a high-throughput approach.
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Affiliation(s)
- Yi-Tzu Cho
- Department of Cosmetic Applications and Management, Yuh-Ing Junior College of Health Care & Management, No. 15, Lane 420, Dachang 2nd Road, Sanmin District, Kaohsiung 807634, Taiwan
| | - Hung Su
- Department of Chemistry, National Sun Yat-Sen University, No. 70, Lienhai Road, Gushan District, Kaohsiung 804201, Taiwan
| | - Ching-Ying Wu
- Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung 807378, Taiwan.,Department of Dermatology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 801735, Taiwan.,Department of Cosmetic Science, Chang Gung University of Science and Technology, Taoyuan 333324, Taiwan
| | - Tiao-Lai Huang
- Department of Psychiatry, Chang Gung Memorial Hospital-Kaohsiung Medical Center and Chang Gung University College of Medicine, Kaohsiung 833401, Taiwan.,Genomic and Proteomic Core Laboratory, Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833401, Taiwan
| | - Jingyueh Jeng
- Department of Medicinal Chemistry, Chia Nan University of Pharmacy and Science, Tainan 717301, Taiwan
| | - Min-Zong Huang
- Department of Chemistry, National Sun Yat-Sen University, No. 70, Lienhai Road, Gushan District, Kaohsiung 804201, Taiwan
| | - Deng-Chyang Wu
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807378, Taiwan.,Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 807378, Taiwan.,Department of Medicine, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
| | - Jentaie Shiea
- Department of Chemistry, National Sun Yat-Sen University, No. 70, Lienhai Road, Gushan District, Kaohsiung 804201, Taiwan.,Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 807378, Taiwan.,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
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20
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21
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Jiao B, Ye H, Liu X, Bu J, Wu J, Zhang W, Zhang Y, Ouyang Z. Handheld Mass Spectrometer with Intelligent Adaptability for On-Site and Point-of-Care Analysis. Anal Chem 2021; 93:15607-15616. [PMID: 34780167 DOI: 10.1021/acs.analchem.1c02508] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The development of miniature mass spectrometry (MS) systems with simple analysis procedures is important for the transition of applying MS analysis outside traditional analytical laboratories. Here, we present Mini 14, a handheld MS instrument with disposable sample cartridges designed based on the ambient ionization concept for intrasurgical tissue analysis and surface analysis. The instrumentation architecture consists of a single-stage vacuum chamber with a discontinuous atmospheric interface and a linear ion trap. A major effort in this study for technical advancement is on making handheld MS systems capable of automatically adapting to complex conditions for in-field analysis. Machine learning is used to establish the model for autocorrecting the mass offsets in the mass scale due to temperature variations and a new strategy is developed to extend the dynamic concentration range for analysis. Mini 14 weighs 12 kg and can operate on battery power for more than 3 h. The mass range exceeds m/z 2000, and the full peak width at half-maximum is Δm/z 0.4 at a scanning speed of 700 Th/s. The direct analysis of human brain tissue for identifying glioma associated with isocitrate dehydrogenase mutations has been achieved and a limit of detection of 5 ng/mL has been obtained for analyzing illicit drugs in blood.
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Affiliation(s)
- Bin Jiao
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
| | - Huimin Ye
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
| | - Xinwei Liu
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
| | - Jiexun Bu
- PURSPEC Technologies Inc., Beijing 100084, China
| | - Junhan Wu
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
| | - Wenpeng Zhang
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
| | - Yunfeng Zhang
- Institute of Forensic Science of China, Ministry of Public Security, Beijing 100038, China
| | - Zheng Ouyang
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
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22
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Szalwinski LJ, Hu Y, Morato NM, Cooks RG, Salentijn GI. Novel Ion Trap Scan Modes to Develop Criteria for On-Site Detection of Sulfonamide Antibiotics. Anal Chem 2021; 93:13904-13911. [PMID: 34617742 PMCID: PMC8529578 DOI: 10.1021/acs.analchem.1c02790] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Advances in ambient
ionization techniques have facilitated the
direct analysis of complex mixtures without sample preparation. Significant
attention has been given to innovating ionization methods so that
multiple options are now available, allowing for ready selection of
the best methods for particular analyte classes. These ambient techniques
are commonly implemented on benchtop systems, but their potential
application with miniature mass spectrometers for in situ measurements is even more powerful. These applications require that
attention be paid to tailoring the mass spectrometric methodology
for the on-site operation. In this study, combinations of scan modes
are employed to efficiently determine what tandem mass spectrometry
(MS/MS) operations are most useful for detecting sulfonamides using
a miniature ion trap after ionization. First, mixtures of representative
sulfonamide antibiotics were interrogated using a 2D MS/MS scan on
a benchtop ion trap in order to determine which class-specific fragments
(ionic or neutral) are shared between the sulfonamides and thus have
diagnostic value. Then, three less-used combination scans were recorded:
(i) a simultaneous precursor ion scan was used to detect both analytes
and an internal standard in a single ion injection event to optimize
quantitative performance; (ii) a simultaneous precursor/neutral loss
scan was used to improve detection limits; and finally, (iii) the
simultaneous precursor/neutral loss scan was implemented in a miniature
mass spectrometer and representative sulfonamides were detected at
concentrations as low as 100 ng/mL by nano-electrospray and 0.5 ng
absolute by paper spray ionization, although improvements in the stability
of the home-built instrumentation are needed to further optimize performance.
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Affiliation(s)
- Lucas J Szalwinski
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Yanyang Hu
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Nicolás M Morato
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - R Graham Cooks
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Gert Ij Salentijn
- Laboratory of Organic Chemistry, Wageningen University, Wageningen 6708 WE, The Netherlands.,Wageningen Food Safety Research (WFSR), Wageningen University & Research, Wageningen 6700 AE, The Netherlands
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23
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Brown HM, Fedick PW. Rapid, low-cost, and in-situ analysis of per- and polyfluoroalkyl substances in soils and sediments by ambient 3D-printed cone spray ionization mass spectrometry. CHEMOSPHERE 2021; 272:129708. [PMID: 35534952 DOI: 10.1016/j.chemosphere.2021.129708] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 01/13/2021] [Accepted: 01/17/2021] [Indexed: 06/14/2023]
Abstract
A rapid method to empirically determine the presence of trace per- and polyfluoroalkyl substances (PFAS) in solid media, such as soils, sands, and sediments, without any sample preparation, through ambient ionization mass spectrometry (MS), is described. 3D-printed cone spray ionization (3D-PCSI) is an ambient ionization technique that employs a 3D-printed conductive plastic cone to perform both sampling and ionization. The 3D-PCSI sources are fabricated in the shape of a hollowed square pyramid to hold bulk matrices, and consist of rigid walls to aid in the uniformity and consistency of sampling and ionization. Solid samples are placed within the hollowed pyramid and a solvent is added to perform an in-situ extraction, followed by spray-based ionization when a voltage is applied. The low cost of 3D-printing, its reproducibility at scale, and lack of sample preparation, enables 3D-PCSI-MS to rapidly and efficiently screen for trace PFAS, in-situ, in bulk samples. Demonstrated here is the detection of trace PFAS that were doped into six different soil and sediment matrices, by 3D-PCSI-MS, to validate the universality of the method, irrespective of matrix composition. All PFAS were identified by their indicative MS3 spectra and ranged in detection limits from 100 ppt to 10 ppb depending on the compound and soil classification. Legacy aqueous film forming foams (AFFF) were analyzed in soil by 3D-PCSI-MS, as were soil samples collected around an AFFF testing facility. The sampling rate for 3D-PCSI-MS was less than 2 min per sample, demonstrating the applicability to high-throughput mapping of a contaminated area.
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Affiliation(s)
- Hilary M Brown
- Research Department, Chemistry Division, United States Navy - Naval Air Systems Command (NAVAIR). Naval Air Warfare Center, Weapons Division (NAWCWD), 1900 N. Knox Road, China Lake, California, 93555, United States
| | - Patrick W Fedick
- Research Department, Chemistry Division, United States Navy - Naval Air Systems Command (NAVAIR). Naval Air Warfare Center, Weapons Division (NAWCWD), 1900 N. Knox Road, China Lake, California, 93555, United States.
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24
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Jing W, Wang J, Kuipers B, Bi W, Chen DDY. Recent applications of graphene and graphene-based materials as sorbents in trace analysis. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116212] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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25
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Li W, Yao YN, Wu L, Wang L, Hu B. Contactless electrospray ionization mass spectrometry for direct detection of analytes in living organisms. JOURNAL OF MASS SPECTROMETRY : JMS 2021; 56:e4539. [PMID: 32677755 DOI: 10.1002/jms.4539] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/26/2020] [Accepted: 05/11/2020] [Indexed: 06/11/2023]
Abstract
In this study, we developed contactless electrospray ionization mass spectrometry (ESI-MS) for in vivo analysis of living organisms in different applications. The in vivo sampling and direct analysis processess of living organisms were integrated into an operation that only requires the organism close to MS inlet that was applied to a high voltage. Living plants and animals were directly induced to generate spray ionization. Direct detection and in vivo monitoring of metabolites and chemical residues in various living organisms were successfully demonstrated. Analysis of a single sample could be completed within 30 s. Overall, contactless ESI-MS provides an attractive in vivo method to straightforward investigation of living organisms.
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Affiliation(s)
- Wen Li
- Institute of Laboratory Animal Science, Jinan University, Guangzhou, China
| | - Ya-Nan Yao
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou, China
| | - Lin Wu
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou, China
| | - Lei Wang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, and JNU-HKUST Joint Laboratory for Neuroscience and Innovative Drug Research, Jinan University, Guangzhou, China
| | - Bin Hu
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou, China
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26
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Gao H, Lin J, Jia X, Zhao Y, Wang S, Bai H, Ma Q. Real-time authentication of animal species origin of leather products using rapid evaporative ionization mass spectrometry and chemometric analysis. Talanta 2021; 225:122069. [PMID: 33592787 DOI: 10.1016/j.talanta.2020.122069] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 12/22/2020] [Accepted: 12/25/2020] [Indexed: 12/18/2022]
Abstract
Increasing accounts of fraud and persistent labeling problems have brought the authenticity of leather products into question. In this study, we developed an extremely simplified workflow for real-time, in situ, and unambiguous authentication of leather samples using rapid evaporative ionization mass spectrometry (REIMS) coupled with an electric soldering iron. Initially, authentic leather samples from cattle, sheep, pig, deer, ostrich, crocodile, and snake were used to create a chemometric model based on principal component analysis and linear discriminant analysis algorithms. The validated multivariate statistical model was then used to analyze and generate live classifications of commercial leather samples. In addition to REIMS analysis, the microstructures of leathers were characterized by scanning electron microscopy to provide complementary information. The current study is expected to provide a high-throughput tool with superior efficiency and accuracy for authenticating the identity of leathers and other consumer products of biogenic origin.
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Affiliation(s)
- Haiyan Gao
- Chinese Academy of Inspection and Quarantine, Beijing 100176, China; Inner Mongolia Autonomous Region Institute of Product Quality Inspection, Huhhot 010070, China
| | - Jihong Lin
- Waters Corporation, Beijing 100176, China
| | | | - Yang Zhao
- National Quality Supervision and Testing Center for Leather Products, Beijing 100015, China
| | - Songying Wang
- Inner Mongolia Autonomous Region Institute of Product Quality Inspection, Huhhot 010070, China
| | - Hua Bai
- Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Qiang Ma
- Chinese Academy of Inspection and Quarantine, Beijing 100176, China.
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27
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In Situ Separation and Analysis of Lipids by Paper Spray Ionization Mass Spectrometry. Molecules 2020; 26:molecules26010093. [PMID: 33379256 PMCID: PMC7795734 DOI: 10.3390/molecules26010093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/24/2020] [Accepted: 12/25/2020] [Indexed: 11/16/2022] Open
Abstract
Paper spray ionization (PSI) is an extractive ambient ionization technique for mass spectrometry (MS), whereby a triangular paper tip serves as the sampling base and the electrospray tip. During PSI, analytes are extracted and transported to the edge of the paper tip by the applied spraying solvent. Analytes can be purified from a sample matrix and separated from each other by this transportation process. In this study, we investigated and utilized the analyte transportation process of PSI for the in situ separation and analysis of lipid mixtures. We found that differential transport of phosphatidylcholine (PC) and triacylglycerol (TAG), the two most abundant lipid classes in animals, occurred during PSI. We also found that the order in which these lipids moved strongly depended on how the spraying solvent was applied to the paper base. The more polar PC moved faster than the less polar TAG during PSI, when a polar solvent was slowly fed into a paper tip, whereas TAG was transported faster than PC when excess solvent was applied to the tip at once. In addition, we achieved a complete separation and detection of PC and TAG by slowly supplying a nonpolar solvent to a PSI tip.
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28
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Beneito-Cambra M, Gilbert-López B, Moreno-González D, Bouza M, Franzke J, García-Reyes JF, Molina-Díaz A. Ambient (desorption/ionization) mass spectrometry methods for pesticide testing in food: a review. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:4831-4852. [PMID: 33000770 DOI: 10.1039/d0ay01474e] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Ambient mass spectrometry refers to the family of techniques that allows ions to be generated from condensed phase samples under ambient conditions and then, collected and analysed by mass spectrometry. One of their key advantages relies on their ability to allow the analysis of samples with minimal to no sample workup. This feature maps well to the requirements of food safety testing, in particular, those related to the fast determination of pesticide residues in foods. This review discusses the application of different ambient ionization methods for the qualitative and (semi)quantitative determination of pesticides in foods, with the focus on different specific methods used and their ionization mechanisms. More popular techniques used are those commercially available including desorption electrospray ionization (DESI-MS), direct analysis on real time (DART-MS), paper spray (PS-MS) and low-temperature plasma (LTP-MS). Several applications described with ambient MS have reported limits of quantitation approaching those of reference methods, typically based on LC-MS and generic sample extraction procedures. Some of them have been combined with portable mass spectrometers thus allowing "in situ" analysis. In addition, these techniques have the ability to map surfaces (ambient MS imaging) to unravel the distribution of agrochemicals on crops.
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Affiliation(s)
- Miriam Beneito-Cambra
- Analytical Chemistry Research Group (FQM-323), Department of Physical and Analytical Chemistry, University of Jaen, 23071 Jaén, Spain.
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Desorption atmospheric pressure chemical ionization: A review. Anal Chim Acta 2020; 1130:146-154. [DOI: 10.1016/j.aca.2020.05.073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 05/29/2020] [Accepted: 05/30/2020] [Indexed: 01/27/2023]
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Cody RB, Fouquet TNJ, Takei C. Thermal desorption and pyrolysis direct analysis in real time mass spectrometry for qualitative characterization of polymers and polymer additives. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34 Suppl 2:e8687. [PMID: 31797453 DOI: 10.1002/rcm.8687] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/27/2019] [Accepted: 11/29/2019] [Indexed: 06/10/2023]
Abstract
RATIONALE Direct analysis in real time mass spectrometry (DART-MS) provides qualitative information about additives and polymer composition. However, the observed mass spectra are dependent on sampling conditions, in particular the DART gas temperature. This report describes the combination of a heated sample stage with DART-MS for polymer characterization. METHODS Industrial polymers with different compositions were examined by thermal desorption and pyrolysis (TDPy) DART. Samples were heated on disposable copper stages from ambient temperature to 600°C, and the evolved gases were introduced directly into a DART ion source through a glass tee. Time- and temperature-dependent mass spectra were acquired using a high-resolution time-of-flight mass spectrometer. Kendrick mass analysis was applied to the interpretation of complex mass spectra observed for fluorinated polymers. RESULTS Positive-ion DART mass spectra of common polymers exhibited peak series differing by monomer masses, often accompanied by a peak corresponding to the protonated monomer. Even polymers that did not exhibit a clear series of peaks produced characteristic mass spectra. Positive-ion and negative-ion mass spectra were recorded for fluorinated polymers, with polytetrafluoroethylene (PTFE) producing only negative ions. Thermal desorption provided characteristic temperature profiles for volatile species such as polymer additives and polymer pyrolysis products. CONCLUSIONS In comparison with direct analysis by positioning sample directly in the heated DART gas stream, TDPy DART provides a more versatile sampling method and provides thermal separation and profiling of polymer additives, intact short polymer chains, and pyrolysis fragments.
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Affiliation(s)
| | - Thierry N J Fouquet
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Chikako Takei
- Biochromato Inc., 1-12-19 Honcho, Fujisawa, Kanagawa-ken, Japan
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31
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Li N, Nie H, Jiang L, Ruan G, Du F, Liu H. Recent advances of ambient ionization mass spectrometry imaging in clinical research. J Sep Sci 2020; 43:3146-3163. [PMID: 32573988 DOI: 10.1002/jssc.202000273] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/03/2020] [Accepted: 05/06/2020] [Indexed: 02/06/2023]
Abstract
The structural information and spatial distribution of molecules in biological tissues are closely related to the potential molecular mechanisms of disease origin, transfer, and classification. Ambient ionization mass spectrometry imaging is an effective tool that provides molecular images while describing in situ information of biomolecules in complex samples, in which ionization occurs at atmospheric pressure with the samples being analyzed in the native state. Ambient ionization mass spectrometry imaging can directly analyze tissue samples at a fairly high resolution to obtain molecules in situ information on the tissue surface to identify pathological features associated with a disease, resulting in the wide applications in pharmacy, food science, botanical research, and especially clinical research. Herein, novel ambient ionization techniques, such as techniques based on spray and solid-liquid extraction, techniques based on plasma desorption, techniques based on laser desorption ablation, and techniques based on acoustic desorption were introduced, and the data processing of ambient ionization mass spectrometry imaging was briefly reviewed. Besides, we also highlight recent applications of this imaging technology in clinical researches and discuss the challenges in this imaging technology and the perspectives on the future of the clinical research.
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Affiliation(s)
- Na Li
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P. R. China
- College of Chemistry and Molecular Engineering, Peking University, Beijing, P. R. China
| | - Honggang Nie
- College of Chemistry and Molecular Engineering, Peking University, Beijing, P. R. China
| | - Liping Jiang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P. R. China
| | - Guihua Ruan
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P. R. China
| | - Fuyou Du
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P. R. China
- College of Biological and Environmental Engineering, Changsha University, Changsha, P. R. China
| | - Huwei Liu
- College of Chemistry and Molecular Engineering, Peking University, Beijing, P. R. China
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Qi G, Li Q, Liu G, Qiu C, Long T, Tian D. Design of a Resonant Radiofrequency Driver for Ion Transmission in a Desktop Mass Spectrometer and Its Application in Volatile Organic Compound Determination. ANAL LETT 2020. [DOI: 10.1080/00032719.2019.1711385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Guochen Qi
- College of Instrumentation & Electrical Engineering, Jilin University, Changchun, China
| | - Qingyun Li
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Guangda Liu
- College of Instrumentation & Electrical Engineering, Jilin University, Changchun, China
| | - Chunling Qiu
- College of Instrumentation & Electrical Engineering, Jilin University, Changchun, China
| | - Tao Long
- Beijing SHRIMP Center, Institute of Geology Chinese Academy of Geological Sciences, Beijing, China
| | - Di Tian
- College of Instrumentation & Electrical Engineering, Jilin University, Changchun, China
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33
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WANG YF, LU HY, ZHANG H, CHEN HW. Recent Progress on Tissue Analysis by Mass Spectrometry without Sample Pretreatment. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1016/s1872-2040(20)60030-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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34
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Perraud V, Li X, Smith JN, Finlayson-Pitts BJ. Novel ionization reagent for the measurement of gas-phase ammonia and amines using a stand-alone atmospheric pressure gas chromatography (APGC) source. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8561. [PMID: 31429122 DOI: 10.1002/rcm.8561] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 08/14/2019] [Accepted: 08/14/2019] [Indexed: 06/10/2023]
Abstract
RATIONALE Contaminants present in ambient air or in sampling lines can interfere with the target analysis through overlapping peaks or causing a high background. This study presents a positive outcome from the unexpected presence of N-methyl-2-pyrrolidone, released from a PALL HEPA filter, in the analysis of atmospherically relevant gas-phase amines using chemical ionization mass spectrometry. METHODS Gas-phase measurements were performed using a triple quadrupole mass spectrometer equipped with a modified atmospheric pressure gas chromatography (APGC) source which allows sampling of the headspace above pure amine standards. Gas-phase N-methyl-2-pyrrolidone (NMP) emitted from a PALL HEPA filter located in the inlet stream served as the ionizing agent. RESULTS This study demonstrates that some alkylamines efficiently form a [NMP + amine+H]+ cluster with NMP upon chemical ionization at atmospheric pressure. The extent of cluster formation depends largely on the proton affinity of the amine compared with that of NMP. Aromatic amines (aniline, pyridine) and diamines (putrescine) were shown not to form cluster ions with NMP. CONCLUSIONS The use of NMP as an ionizing agent with stand-alone APGC provided high sensitivity for ammonia and the smaller amines. The main advantages, in addition to sensitivity, are direct sampling into the APGC source and avoiding uptake on sampling lines which can be a significant problem with ammonia and amines.
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Affiliation(s)
- Véronique Perraud
- Department of Chemistry, University of California, Irvine, CA, 92697, USA
| | - Xiaoxiao Li
- Department of Chemistry, University of California, Irvine, CA, 92697, USA
| | - James N Smith
- Department of Chemistry, University of California, Irvine, CA, 92697, USA
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35
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Skaggs C, Kirkpatrick L, Wichert WRA, Skaggs N, Manicke NE. A statistical approach to optimizing paper spray mass spectrometry parameters. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8601. [PMID: 32043669 DOI: 10.1002/rcm.8601] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/28/2019] [Accepted: 08/30/2019] [Indexed: 06/10/2023]
Abstract
RATIONALE Paper spray mass spectrometry (PS-MS) was used to analyze and quantify ampicillin, a hydrophilic compound and frequently utilized antibiotic. Hydrophilic molecules are difficult to analyze via PS-MS due to their strong binding affinity to paper substrates and low ionization efficiency, among other reasons. METHODS Solvent and paper parameters were optimized to increase the extraction of ampicillin from the paper substrate. After optimizing these key parameters, a Resolution IV 1/16 fractional factorial design with two center points was employed to screen eight different design parameters simultaneously. RESULTS Pore size, sample volume, and solvent volume were the most significant factors affecting average peak area under the curve (AUC) and the signal-to-blank (S/B) ratio for the 1 μg/mL ampicillin calibrant. After optimizing the key parameters, a linear calibration curve with a range of 0.2 μg/mL to 100 μg/mL was generated (R2 = 0.98) and the limit of detection (LOD) and lower limit of quantification (LLOQ) were calculated to be 0.07 μg/mL and 0.25 μg/mL, respectively. CONCLUSIONS The statistical optimization procedure undertaken here increased the mass spectral signal intensity by more than a factor of 40. This statistical method of screening followed by optimization experiments proved faster and more efficient, and produced more drastic improvements than typical one-factor-at-a-time experiments.
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Affiliation(s)
- Christine Skaggs
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA
| | - Lindsey Kirkpatrick
- Department of Pediatrics, Division of Pediatric Infectious Diseases, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - William R A Wichert
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA
| | - Nicole Skaggs
- Technical Problem Solver, General Motors Proving Grounds, Milford, MI, 48380, USA
| | - Nicholas E Manicke
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA
- Forensics and Investigative Sciences, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA
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Yao YN, Di D, Yuan ZC, Wu L, Hu B. Schirmer Paper Noninvasive Microsampling for Direct Mass Spectrometry Analysis of Human Tears. Anal Chem 2020; 92:6207-6212. [PMID: 32250596 DOI: 10.1021/acs.analchem.9b05078] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Rapid and sensitive detection of metabolites and chemical residues in human tears is highly beneficial for understanding eye health. In this study, Schirmer paper was used for noninvasive microsampling of human tears, and then paper spray mass spectrometry (PSMS) was performed for direct analysis of human tears. Schirmer PSMS was successfully used for rapid diagnosis of dry-eye syndrome by detecting the volume and metabolites of human tears. Drugs of abuse, therapeutic drugs, and pharmacodynamics in human tears were also investigated by Schirmer PSMS. Furthermore, specific markers of environmental exposures in the air to human eyes, including volatile organic compounds, aerosol, and smoke, were unambiguously sampled and detected in human tears using Schirmer PSMS. Excellent analytical performances were achieved, including single-use, low-sample consumption (1.0 μL), rapid analysis (the whole analytical procedure completed within 3 min), high sensitivity (absolute limit of detection less than or equal to 0.5 pg, signal-to-noise ratio greater than or equal to 3), good reproducibility (relative standard deviation less than 10%, n = 3), and accurate quantitation (average deviation less than 3%, n = 3). Overall, our results showed that Schirmer PSMS is a highly effective method for direct tear analysis and is expected to be a convenient tool for human tear analysis in significant clinical applications.
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Affiliation(s)
- Ya-Nan Yao
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou 510632, China
| | - Dandan Di
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou 510632, China
| | - Zi-Cheng Yuan
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou 510632, China
| | - Lin Wu
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou 510632, China
| | - Bin Hu
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou 510632, China
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Masuda K, Kobayashi S. Direct and quantitative monitoring of catalytic organic reactions under heterogeneous conditions using direct analysis in real time mass spectrometry. Chem Sci 2020; 11:5105-5112. [PMID: 34122968 PMCID: PMC8159215 DOI: 10.1039/d0sc00021c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This new method overcomes problems of conventional analytical methodologies such as light scattering and sampling reproducibility issues. We used this method for mechanistic studies of catalytic reactions under heterogeneous conditions. Direct-type hydroxymethylation reactions and Mukaiyama-type hydroxymethylation reactions both catalyzed by a scandium-bipyridine ligand complex under micellar conditions were employed as examples of heterogeneous reactions. For direct-type hydroxymethylation reactions, initial reaction rate assays revealed first-order dependency on both substrate and catalyst. On the other hand, Mukaiyama-type hydroxymethylation reactions showed first-order rate dependency on substrate, zero-order on catalyst and saturation kinetics on formaldehyde.
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Affiliation(s)
- Koichiro Masuda
- Department of Chemistry, School of Science, The University of Tokyo. Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Shū Kobayashi
- Department of Chemistry, School of Science, The University of Tokyo. Hongo Bunkyo-ku Tokyo 113-0033 Japan
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38
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Fast screening of trace multiresidue pesticides on fruit and vegetable surfaces using ambient ionization tandem mass spectrometry. Anal Chim Acta 2020; 1102:63-71. [DOI: 10.1016/j.aca.2019.12.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 12/12/2019] [Accepted: 12/15/2019] [Indexed: 01/20/2023]
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Fan J, Lian P, Li M, Liu X, Zhou X, Ouyang Z. Ion Mobility Separation Using a Dual-LIT Miniature Mass Spectrometer. Anal Chem 2020; 92:2573-2579. [PMID: 31940171 DOI: 10.1021/acs.analchem.9b04271] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Ion mobility (IM) has been increasingly used in combination with mass spectrometry (MS) for chemical and biological analysis. While implementation of IM with MS usually requires complex instrumentation with delicate controls, in this study we explored the potential of performing IM separation using dual-linear ion traps (LITs) in a miniature mass spectrometer, which was originally developed for performing comprehensive MS/MS scan functions with a simple instrumentation configuration. The IM separation was achieved by ion transfer between the LITs with dynamic gas flow. Its performance was characterized for analysis of a broad range of chemical and biological compounds including small organic compounds such as trisaccharides, raffinose, cellotriose, and melezitose, as well as protein conformers. The demonstrated technique serves as another example of developing powerful hybrid instrument functions with simple configurations and miniaturized sizes.
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Affiliation(s)
- Jingjin Fan
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument , Tsinghua University , Beijing 100084 , China
| | - Penglong Lian
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument , Tsinghua University , Beijing 100084 , China
| | - Ming Li
- NCS Testing Technology Company, Limited , Beijing 100081 , China
| | - Xinwei Liu
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument , Tsinghua University , Beijing 100084 , China
| | - Xiaoyu Zhou
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument , Tsinghua University , Beijing 100084 , China
| | - Zheng Ouyang
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument , Tsinghua University , Beijing 100084 , China
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40
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Zhang Q, Lin L, Yu Q, Wang X. Exploiting the native inspiratory ability of a mass spectrometer to improve analysis efficiency. RSC Adv 2020; 10:4103-4109. [PMID: 35492673 PMCID: PMC9048837 DOI: 10.1039/c9ra09104a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/17/2020] [Indexed: 01/07/2023] Open
Abstract
In this study, a new approach to perform self-aspirating sampling in mass spectrometry (MS) analysis was developed by using the native inspiratory ability of a mass spectrometer. Specifically, the inspiratory channel and sampling inlet of the MS instrument were integrated into a single pathway through a sealed ionization chamber to facilitate analyte delivery and improve sample utilization. Based on this approach, combined with structural simplification and optimization, a versatile electrospray ionization (ESI) source has been constructed and characterized using different mass spectrometers. In addition to the self-aspirating ability, this source configuration can provide sub-ambient pressure (SAP) conditions for ionization, which were conducive to suppressing the background ions generated from some air-involved reactions. Moreover, it can also be used directly for electrospray-driven extraction ionization. With the SAP-ESI source, a conventional mass spectrometer enables rapid analysis of both volatiles and solutions via secondary electrospray ionization and coaxial electrospray ionization, respectively. As the compact gas pathway of the source will promote the efficient transfer and ionization of the sampled substances, the total consumption of the analyte for each analysis can be reduced to subnanogram level and a subppbv limit detection is achieved. Other demonstrated features such as the versatility, easy operation as well as simple assembly will likely contribute to the prevalence of the proposed sampling and ionization strategy. In this study, a new approach to perform self-aspirating sampling in mass spectrometry (MS) analysis was developed by using the native inspiratory ability of a mass spectrometer.![]()
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Affiliation(s)
- Qian Zhang
- Division of Advanced Manufacturing
- Tsinghua Shenzhen International Graduate School
- Shenzhen
- China
- State Key Laboratory of Precision Measurement Technology and Instruments
| | - Lin Lin
- Materials Characterization & Preparation Center
- Southern University of Science and Technology
- Shenzhen 518055
- China
| | - Quan Yu
- Division of Advanced Manufacturing
- Tsinghua Shenzhen International Graduate School
- Shenzhen
- China
| | - Xiaohao Wang
- Division of Advanced Manufacturing
- Tsinghua Shenzhen International Graduate School
- Shenzhen
- China
- State Key Laboratory of Precision Measurement Technology and Instruments
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Zhu Y, Liu R, Yang Z. Redesigning the T-probe for mass spectrometry analysis of online lysis of non-adherent single cells. Anal Chim Acta 2019; 1084:53-59. [PMID: 31519234 PMCID: PMC6746249 DOI: 10.1016/j.aca.2019.07.059] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/25/2019] [Accepted: 07/28/2019] [Indexed: 12/16/2022]
Abstract
Single cell mass spectrometry (SCMS) allows for molecular analysis of individual cells while avoiding the inevitable drawbacks of using cell lysate prepared from populations of cells. Based on our previous design of the T-probe, a microscale sampling and ionization device for SCMS analysis, we further developed the device to perform online, and real time lysis of non-adherent live single cells for mass spectrometry (MS) analysis at ambient conditions. This redesigned T-probe includes three parts: a sampling probe with a small tip to withdraw a whole cell, a solvent-providing capillary to deliver lysis solution (i.e., acetonitrile), and a nano-ESI emitter in which rapid cell lysis and ionization occur followed by MS analysis. These three components are embedded between two polycarbonate slides and are jointed through a T-junction to form an integrated device. Colon cancer cells (HCT-116) under control and treatment (using anticancer drug irinotecan) conditions were analyzed. We detected a variety of intracellular species, and structural identification of selected ions was conducted using tandem MS (MS2). We further conducted statistical analysis (e.g., PLS-DA and t-test) to gain biological insights of cellular metabolism. Our results indicate that the influence of anticancer drugs on cellular metabolism of live non-adherent cells can be obtained using the SCMS experiments combined with statistical data analysis.
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Affiliation(s)
- Yanlin Zhu
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, OK, 73019, USA
| | - Renmeng Liu
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, OK, 73019, USA
| | - Zhibo Yang
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, OK, 73019, USA.
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da Silva LC, de Carvalho TC, Pereira I, Marana JC, Laviola BG, Abdelnur PV, Vaz BG. Molecularly Imprinted Polymer-Coated Probe Electrospray Ionization Mass Spectrometry Determines Phorbol Esters and Deoxyphorbol Metabolites in Jatropha curcas Leaves. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:2051-2059. [PMID: 31342263 DOI: 10.1007/s13361-019-02269-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 05/07/2019] [Accepted: 06/09/2019] [Indexed: 06/10/2023]
Abstract
In this study, a molecularly imprinted polymer-coated probe electrospray ionization mass spectrometry (MIPCPESI-MS) method was developed for detection of phorbol esters (PEs) and deoxyphorbol metabolites in Jatropha curcas leaves. Such an approach was established by sticking on a metallic needle a molecularly imprinted polymer to particularly design a MIP-coated probe for selective sampling and ionization of PEs and deoxyphorbol metabolites. By a subsequent application of a high voltage and methanol, as spray solvent, ESI was generated for direct and rapid analysis under ambient and open-air conditions. MIP-coated probe exhibited a high sampling capacity of the PEs and its metabolites in methanolic extracts of J. curcas leaves compared with the non-imprinted polymer (NIP)-coated probe. MIPCPESI-MS allowed the detection of phorbol 12,13-diacetate (PDA) from J. curcas leaves with minimal sample preparation, and with detection limit and quantification reaching 0.28 μg/mL and 0.92 μg/mL, respectively. Also, good linearity was obtained with R2 > 0.99 and precision and accuracy values between 4.06-13.49% and - 1.60 to - 15.26%, respectively. The current method was successfully applied to screening methanolic extracts of six different J. curcas leaf genotypes (three toxic and three non-toxic). PDA and three PE deoxyphorbol metabolites were identified only from toxic genotypes, in which PDA was determined with concentration ranging from 222.19 ± 23.55 to 528.23 ± 19.72 μg/g. All these findings support that the MIPCPESI-MS method developed here has a high potential for the analysis of PEs in plant extracts enabling differentiation of toxic and non-toxic genotypes earlier in the leaves.
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Affiliation(s)
- Lidya C da Silva
- Laboratory of Chromatography and Mass Spectrometry (LaCEM), Chemistry Institute, Federal University of Goiás, Goiânia, GO, 74690-900, Brazil
| | - Thays C de Carvalho
- Laboratory of Chromatography and Mass Spectrometry (LaCEM), Chemistry Institute, Federal University of Goiás, Goiânia, GO, 74690-900, Brazil
| | - Igor Pereira
- Laboratory of Chromatography and Mass Spectrometry (LaCEM), Chemistry Institute, Federal University of Goiás, Goiânia, GO, 74690-900, Brazil
| | - Julio Cesar Marana
- Embrapa Agroenergy, Brazilian Agricultural Research Company, Brasília, DF, 70770-901, Brazil
| | - Bruno G Laviola
- Embrapa Agroenergy, Brazilian Agricultural Research Company, Brasília, DF, 70770-901, Brazil
| | - Patricia V Abdelnur
- Embrapa Agroenergy, Brazilian Agricultural Research Company, Brasília, DF, 70770-901, Brazil
| | - Boniek G Vaz
- Laboratory of Chromatography and Mass Spectrometry (LaCEM), Chemistry Institute, Federal University of Goiás, Goiânia, GO, 74690-900, Brazil.
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Astarita G, Dhungana S, Shrestha B, Laiakis EC. Metabolomic approaches to study the tumor microenvironment. Methods Enzymol 2019; 636:93-108. [PMID: 32178829 DOI: 10.1016/bs.mie.2019.07.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Tumors are characterized by metabolic dysregulation, reprogramming, and the presence of metabolites, which can act both as energy mediators and signaling messengers. Measuring the concentration and composition of metabolites in the tumor microenvironment can help to better understand the tumor pathology and might improve therapeutic treatments. Metabolomics can provide a description of the physiological and pathological status, as well as help to identify biomarkers of the disease. Additionally, mass spectrometry-based tissue imaging techniques can show the spatial distribution of metabolites. In this chapter we present protocols for the extraction and analysis of metabolites and lipids, with emphasis on liquid chromatography-mass spectrometry and mass spectrometry imaging.
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Affiliation(s)
- Giuseppe Astarita
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington, DC, United States
| | | | | | - Evagelia C Laiakis
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington, DC, United States; Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, United States.
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44
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Zhao ZY, Qin L, Dong M, Zhang YY, Huang XH, Du M, Zhou DY, Zhu BW. High-Throughput, Rapid Quantification of Phthalic Acid Esters and Alkylphenols in Fish Using a Coated Direct Inlet Probe Coupled with Atmospheric Pressure Chemical Ionization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:7174-7182. [PMID: 31240931 DOI: 10.1021/acs.jafc.9b01335] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Intake of endocrine-disrupting chemicals (EDCs) by humans could disturb the metabolism of hormones, induce cancer, and damage the liver and other organs. Phthalate acid esters (PAEs) and alkylphenols (APs) are important EDCs and environmental contaminants. With the increasing use of plastics and nonionic surfactants worldwide, PAEs and APs have entered environmental water and accumulated in edible fish, which are finally consumed by humans. In this study, a coated direct inlet probe (CDIP) based on an atmospheric solid analysis probe, which can rapidly and simultaneously extract both PAEs and APs in fish, was developed. Twelve PAEs and APs were quantified by using a stable-isotope-labeled internal standard. Standard curves of the PAEs and APs having correlation coefficients of R2 ≥ 0.9837 were obtained. The limit of detection of the PAEs and APs was distributed from 0.01 to 40 ng g-1. The relative recovery of the method was 78-120% between low, medium, and high spiked levels. Combined with principal component analysis, PAE- and AP-contaminated Carassius auratus from different habitats could be identified. Multiple sample analysis mode allowed the extraction of up to 12 samples at once, and the total analysis time (including sample pretreatment, extraction, and analysis time) was less than 10 min per sample, which indicates that CDIP is useful for rapid quantitative analysis.
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Affiliation(s)
- Zi-Yuan Zhao
- National Engineering Research Center of Seafood, School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
| | - Lei Qin
- National Engineering Research Center of Seafood, School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
| | - Meng Dong
- National Engineering Research Center of Seafood, School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
| | - Yu-Ying Zhang
- National Engineering Research Center of Seafood, School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
| | - Xu-Hui Huang
- National Engineering Research Center of Seafood, School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
| | - Ming Du
- National Engineering Research Center of Seafood, School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
| | - Da-Yong Zhou
- National Engineering Research Center of Seafood, School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
| | - Bei-Wei Zhu
- National Engineering Research Center of Seafood, School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
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45
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Hanley L, Wickramasinghe R, Yung YP. Laser Desorption Combined with Laser Postionization for Mass Spectrometry. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2019; 12:225-245. [PMID: 30786215 DOI: 10.1146/annurev-anchem-061318-115447] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Lasers with pulse lengths from nanoseconds to femtoseconds and wavelengths from the mid-infrared to extreme ultraviolet (UV) have been used for desorption or ablation in mass spectrometry. Such laser sampling can often benefit from the addition of a second laser for postionization of neutrals. The advantages offered by laser postionization include the ability to forego matrix application, high lateral resolution, decoupling of ionization from desorption, improved analysis of electrically insulating samples, and potential for high sensitivity and depth profiling while minimizing differential detection. A description of postionization by vacuum UV radiation is followed by a consideration of multiphoton, short pulse, and other postionization strategies. The impacts of laser pulse length and wavelength are considered for laser desorption or laser ablation at low pressures. Atomic and molecular analysis via direct laser desorption/ionization using near-infrared ultrashort pulses is described. Finally, the postionization of clusters, the role of gaseous collisions, sampling at ambient pressure, atmospheric pressure photoionization, and the addition of UV postionization to MALDI are considered.
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Affiliation(s)
- Luke Hanley
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, USA;
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46
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Brochu F, Plante PL, Drouin A, Gagnon D, Richard D, Durocher F, Diorio C, Marchand M, Corbeil J, Laviolette F. Mass spectra alignment using virtual lock-masses. Sci Rep 2019; 9:8469. [PMID: 31186508 PMCID: PMC6560045 DOI: 10.1038/s41598-019-44923-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 05/08/2019] [Indexed: 12/18/2022] Open
Abstract
Mass spectrometry is a valued method to evaluate the metabolomics content of a biological sample. The recent advent of rapid ionization technologies such as Laser Diode Thermal Desorption (LDTD) and Direct Analysis in Real Time (DART) has rendered high-throughput mass spectrometry possible. It is used for large-scale comparative analysis of populations of samples. In practice, many factors resulting from the environment, the protocol, and even the instrument itself, can lead to minor discrepancies between spectra, rendering automated comparative analysis difficult. In this work, a sequence/pipeline of algorithms to correct variations between spectra is proposed. The algorithms correct multiple spectra by identifying peaks that are common to all and, from those, computes a spectrum-specific correction. We show that these algorithms increase comparability within large datasets of spectra, facilitating comparative analysis, such as machine learning.
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Affiliation(s)
- Francis Brochu
- Big Data Research Center, Université Laval, Québec, Qc, Canada. .,Département d'Informatique et Génie Logiciel, Université Laval, Québec, Qc, Canada.
| | - Pier-Luc Plante
- Centre de Recherche du CHU de Québec, Université Laval, Québec, Qc, Canada
| | - Alexandre Drouin
- Big Data Research Center, Université Laval, Québec, Qc, Canada.,Département d'Informatique et Génie Logiciel, Université Laval, Québec, Qc, Canada
| | - Dominic Gagnon
- Centre de Recherche du CHU de Québec, Université Laval, Québec, Qc, Canada.,Infectious Disease Reasearch Center, Université Laval, Québec, Qc, Canada
| | - Dave Richard
- Centre de Recherche du CHU de Québec, Université Laval, Québec, Qc, Canada.,Infectious Disease Reasearch Center, Université Laval, Québec, Qc, Canada
| | - Francine Durocher
- Centre de Recherche du CHU de Québec, Université Laval, Québec, Qc, Canada.,Department of Molecular Medicine, Université Laval, Québec, Qc, Canada
| | - Caroline Diorio
- Centre de Recherche du CHU de Québec, Université Laval, Québec, Qc, Canada.,Department of Social and Preventative Medicine, Université Laval, Québec, Qc, Canada
| | - Mario Marchand
- Big Data Research Center, Université Laval, Québec, Qc, Canada.,Département d'Informatique et Génie Logiciel, Université Laval, Québec, Qc, Canada
| | - Jacques Corbeil
- Big Data Research Center, Université Laval, Québec, Qc, Canada.,Centre de Recherche du CHU de Québec, Université Laval, Québec, Qc, Canada.,Department of Molecular Medicine, Université Laval, Québec, Qc, Canada
| | - François Laviolette
- Big Data Research Center, Université Laval, Québec, Qc, Canada.,Département d'Informatique et Génie Logiciel, Université Laval, Québec, Qc, Canada
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47
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Hou W, Dai J, Duan Y. Rapidly monitoring the quality of flavoring essence based on microwave-induced plasma ionization mass spectrometry and multivariate statistical analysis. Talanta 2019; 198:97-104. [PMID: 30876609 DOI: 10.1016/j.talanta.2019.01.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 01/05/2019] [Accepted: 01/09/2019] [Indexed: 11/16/2022]
Abstract
Microwave-induced plasma ionization mass spectrometry (MIPI-MS) combined with multivariate statistical analysis was first applied to rapidly monitor the quality of tobacco flavoring essence. A small isolation and reaction chamber was set up between the ion source and the injection port of mass spectrometer to effectively eliminate the interference of external environment in the process of analyzing samples. The improved experimental apparatus (MIPI-MS) could achieve online and high-throughput analysis, with minimal sample preparation steps. Further, two types of tobacco flavoring essences with the similar appearance and physicochemical parameters were employed to verify the usability of the promising method in the field of quality monitoring. Firstly, the mass spectral fingerprint of each essence was established by the improved MIPI-MS method within 2 min. Then, two multivariate statistical processes were carried out to analyze mass spectral data. The similarity results indicated that the thresholds of tobacco flavoring essences from different batches were 1.512 and 2.638, respectively. The first three principal components of the established PLS-DA described 93.6% of the total variability, and provided a visualized comparison for the two types of flavoring materials. Finally, the adulterated samples were successfully distinguished by employing the two multivariate statistical processes.
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Affiliation(s)
- Wenqian Hou
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China
| | - Jianxiong Dai
- Research Center of Analytical Instrumentation, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China.
| | - Yixiang Duan
- Research Center of Analytical Instrumentation, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China.
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48
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Wu PC, Dutkiewicz EP, Liao PH, Chiu HY, Urban PL. Blotting paper as a disposable tool for sampling chemical residues from skin surface. J Food Drug Anal 2019; 27:610-613. [PMID: 30987733 PMCID: PMC9296200 DOI: 10.1016/j.jfda.2018.08.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 08/26/2018] [Accepted: 08/27/2018] [Indexed: 11/19/2022] Open
Affiliation(s)
- Pei-Chi Wu
- Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang-Fu Rd., Hsinchu, 30013,
Taiwan
- Department of Applied Chemistry, National Chiao Tung University, 1001 University Rd., Hsinchu, 300,
Taiwan
| | - Ewelina P. Dutkiewicz
- Department of Applied Chemistry, National Chiao Tung University, 1001 University Rd., Hsinchu, 300,
Taiwan
| | - Pei-Han Liao
- Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang-Fu Rd., Hsinchu, 30013,
Taiwan
- Department of Applied Chemistry, National Chiao Tung University, 1001 University Rd., Hsinchu, 300,
Taiwan
| | - Hsien-Yi Chiu
- Department of Dermatology, National Taiwan University Hospital Hsinchu Branch, 25 Jingguo Rd., Hsinchu, 300,
Taiwan
- Department of Dermatology, National Taiwan University Hospital, 7 Chung Shan South Rd., Taipei, 100,
Taiwan
- Department of Dermatology, College of Medicine, National Taiwan University, 1, Section 1, Jen Ai Rd., Taipei, 100,
Taiwan
| | - Pawel L. Urban
- Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang-Fu Rd., Hsinchu, 30013,
Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, 101, Section 2, Kuang-Fu Rd., Hsinchu, 30013,
Taiwan
- Corresponding author. Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang-Fu Rd., Hsinchu, 30013, Taiwan. E-mail address: (P.L. Urban)
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49
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Cheng SC, Tsai YD, Lee CW, Chen BH, Shiea J. Direct and rapid characterization of illicit drugs in adulterated samples using thermal desorption electrospray ionization mass spectrometry. J Food Drug Anal 2019; 27:451-459. [PMID: 30987716 PMCID: PMC9296208 DOI: 10.1016/j.jfda.2018.12.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 12/10/2018] [Accepted: 12/11/2018] [Indexed: 11/24/2022] Open
Abstract
Foods and drinks have been adulterated with illicit drugs to facilitate criminal activities. Unfortunately, conventional analytical methods are incapable of rapidly characterizing these drugs in samples, as serious interferences from sample matrices must be removed through tedious and time-consuming pretreatment. Ambient ionization mass spectrometry (AMS) generally does not require sample pretreatment and is thus a suitable tool for directly and rapidly detecting illicit drugs in samples in different physical states. In this study, thermal desorption electrospray ionization mass spectrometry (TD-ESI/MS), an AMS technique, was utilized to efficiently characterize illicit drugs spiked in samples including drinks, powders, and jelly candies. To perform sensitive analysis, the mass analyzer was operated in multiple reaction monitoring mode to monitor the molecular and fragment ions of the target analytes. The time required to complete a typical TD-ESI/MS analysis was less than 30 s. The limits of detection (LODs) for illicit drugs were found to be 100 ppb in drinks, 100–1000 ppb in instant powders, and 1.3–6.5 ng/mm2 on stamp surfaces. FM2 and nitrazepam laced in the inner layer of a jelly candy were detected by TD-ESI/MS, showcasing the advantage of the technique for direct and rapid analysis as opposed to conventional methods.
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50
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Lawal RO, Donnarumma F, Murray KK. Deep-ultraviolet laser ablation electrospray ionization mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2019; 54:281-287. [PMID: 30675964 PMCID: PMC6422691 DOI: 10.1002/jms.4338] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/12/2019] [Accepted: 01/18/2019] [Indexed: 06/02/2023]
Abstract
A 193-nm wavelength deep ultraviolet laser was used for ambient laser ablation electrospray ionization mass spectrometry of biological samples. A pulsed ArF excimer laser was used to ablate solid samples, and the resulting plume of the desorbed material merged with charged electrospray droplets to form ions that were detected with a quadrupole time-of-flight mass spectrometer. Solutions containing peptide and protein standards up to 66-kDa molecular weight were deposited on a metal target, dried, and analyzed. No fragmentation was observed from peptides and proteins as well as from the more easily fragmented vitamin B12 molecule. The mass spectra contained peaks from multiply charged ions that were identical to conventional electrospray. Deep UV laser ablation of tissue allowed detection of lipids from untreated tissue. The mechanism of ionization is postulated to involve absorption of laser energy by a fraction of the analyte molecules that act as a sacrificial matrix or by residual water in the sample.
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Affiliation(s)
- Remilekun O. Lawal
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana. 70803, USA
| | - Fabrizio Donnarumma
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana. 70803, USA
| | - Kermit K. Murray
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana. 70803, USA
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