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Ye H, Esfahani EB, Chiu I, Mohseni M, Gao G, Yang T. Quantitative and rapid detection of nanoplastics labeled by luminescent metal phenolic networks using surface-enhanced Raman scattering. J Hazard Mater 2024; 470:134194. [PMID: 38583196 DOI: 10.1016/j.jhazmat.2024.134194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 03/12/2024] [Accepted: 03/31/2024] [Indexed: 04/09/2024]
Abstract
The escalating prevalence of nanoplastics contamination in environmental ecosystems has emerged as a significant health hazard. Conventional analytical methods are suboptimal, hindered by their inefficiency in analyzing nanoplastics at low concentrations and their time-intensive processes. In this context, we have developed an innovative approach that employs luminescent metal-phenolic networks (L-MPNs) coupled with surface-enhanced Raman spectroscopy (SERS) to separate and label nanoplastics, enabling rapid, sensitive and quantitative detection. Our strategy utilizes L-MPNs composed of zirconium ions, tannic acid, and rhodamine B to uniformly label nanoplastics across a spectrum of sizes (50-500 nm) and types (e.g., polystyrene, polymethyl methacrylate, polylactic acid). Rhodamine B (RhB) functions as a Raman reporter within these L-MPNs-based SERS tags, providing the requisite sensitivity for trace measurement of nanoplastics. Moreover, the labeling with L-MPNs aids in the efficient separation of nanoplastics from liquid media. Utilizing a portable Raman instrument, our methodology offers cost-effective, swift, and field-deployable detection capabilities, with excellent sensitivity in nanoplastic analysis and a detection threshold as low as 0.1 μg/mL. Overall, this study proposes a highly promising strategy for the robust and sensitive analysis of a broad spectrum of particle analytes, underscored by the effective labeling performance of L-MPNs when coupled with SERS techniques.
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Affiliation(s)
- Haoxin Ye
- Food, Nutrition and Health Program, Faculty of Land and Food Systems, The University of British Columbia, Vancouver V6T1Z4, Canada
| | - Ehsan Banayan Esfahani
- Department of Chemical and Biological Engineering, The University of British Columbia, Vancouver V6T1Z4, Canada
| | - Ivy Chiu
- Food, Nutrition and Health Program, Faculty of Land and Food Systems, The University of British Columbia, Vancouver V6T1Z4, Canada
| | - Madjid Mohseni
- Department of Chemical and Biological Engineering, The University of British Columbia, Vancouver V6T1Z4, Canada
| | - Guang Gao
- Life Sciences Institute, The University of British Columbia, Vancouver V6T1Z2, Canada
| | - Tianxi Yang
- Food, Nutrition and Health Program, Faculty of Land and Food Systems, The University of British Columbia, Vancouver V6T1Z4, Canada.
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2
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Zhou W, Pawliszyn J. Perspective on SPME-MS: Green and high-performance methods for rapid screening. Anal Chim Acta 2024; 1291:342244. [PMID: 38280787 DOI: 10.1016/j.aca.2024.342244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 12/30/2023] [Accepted: 01/12/2024] [Indexed: 01/29/2024]
Abstract
The direct coupling of solid-phase microextraction (SPME) with mass spectrometry (MS) offers rapid analysis with high sensitivity and low matrix effects by benefiting from the integration of sampling, high enrichment, and clean-up functions of SPME. Eliminating chromatographic separation reduces the amount of gas/solvent needed for analysis, while direct desorption in SPME-MS consumes none or few microliters of organic solvents per sample, further enhancing the greenness of the SPME technology. Over the past two decades, the rapid evolution of SPME-MS has given rise to numerous novel technologies that employ diverse ionization techniques and interfaces, several of which have already been commercialized. Drawing from an extensive review published earlier this year and our research experience, we provide perspectives on three aspects of these technologies: interface design and automation, integration with state-of-art MS instrumentation, and anticipated future developments.
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Affiliation(s)
- Wei Zhou
- Department of Chemistry, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
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3
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Chen B, Tan R, Zhong Y, Hu Y, Li G. A chemiluminescence method based on Ce-PA-Tb polymer for rapid determination of difloxacin in aquatic products. Talanta 2024; 267:125217. [PMID: 37738744 DOI: 10.1016/j.talanta.2023.125217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/10/2023] [Accepted: 09/14/2023] [Indexed: 09/24/2023]
Abstract
Ce-PA-Tb polymer with Ce and Tb as metal ion centers was prepared and applied in chemiluminescence (CL) reaction. The structure and property of Ce-PA-Tb were explored. Ce-PA-Tb combines both the oxidant ion (Ce(IV)) and luminescence ion (Tb(III)). Difloxacin can enhance the CL signal of Ce-PA-Tb-SO32- reaction in acidic medium. Under the optimized affecting factors, a CL method for the selective difloxacin determination was established. The CL intensity showed a good linear relationship from 10.0 to 300.0 μg/L (r = 0.9996) with the limit of detection was 1.1 μg/L. The method with the signal response at 0.5 s and completed the CL process within 10 s. The method was used to determine difloxacin in aquatic products, and the recovery rate was in the range of 88.1%-104.0%. The CL method designed Ce-PA-Tb based is demonstrated to be an excellent tool for difloxacin determination in aquatic products.
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Affiliation(s)
- Baisen Chen
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Rongxia Tan
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yanhui Zhong
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yufei Hu
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China.
| | - Gongke Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China.
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4
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Gao G, Qi J, Fu L, Zhao R, Zhang Z, Chen L. Portable instrument based on color sensor chip for on-site rapid detection of dissolved sulfides in environmental water samples. J Hazard Mater 2023; 460:132440. [PMID: 37660620 DOI: 10.1016/j.jhazmat.2023.132440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/27/2023] [Accepted: 08/28/2023] [Indexed: 09/05/2023]
Abstract
To ensure real-time validity of the detection of unstable toxic environmental pollutants, such as dissolved sulfides, we developed a portable on-site rapid analysis instrument. Through novel design of the color sensor chip-based core sensing components and the conversion between color signal and absorbance by Lambert's law, the instrument showed great performance for rapid (within 3 min) and sensitive on-site detection of sulfides in the environment. It is easy to achieve user-friendly, sample in-answer out, one-stop operation due to the touch-screen-integrated user interface of the instrument's data terminal. The detection limit of this method is 2.24 μg/L, the linear operation range is 0-1000 μg/L, and the coefficient of determination is 0.999. This instrument has been successfully applied to the on-site determination of sulfides in the Yellow River Delta and the Yantai Guangdang River in China. The portable instrument showed excellent anti-interference, good stability, and simple operation, which showed great prospects for the on-site rapid analysis of unstable targets in the environment.
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Affiliation(s)
- Ge Gao
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Centre for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ji Qi
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Centre for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Longwen Fu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Centre for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
| | - Rongfang Zhao
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Centre for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Zhiyang Zhang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Centre for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Centre for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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5
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Huang J, Wang P, Wu Y, Zeng L, Ji X, Zhang X, Wu M, Tong H, Yang Y. Rapid determination of triglyceride and glucose levels in Drosophila melanogaster induced by high-sugar or high-fat diets based on near-infrared spectroscopy. Heliyon 2023; 9:e17389. [PMID: 37426790 PMCID: PMC10329124 DOI: 10.1016/j.heliyon.2023.e17389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 06/12/2023] [Accepted: 06/15/2023] [Indexed: 07/11/2023] Open
Abstract
Triglyceride and glucose levels are important indicators for determining metabolic syndrome, one of the leading public-health burdens worldwide. Drosophila melanogaster is an ideal model for investigating metabolic diseases because it has 70% homology to human genes and its regulatory mechanism of energy metabolism homeostasis is highly similar to that of mammals. However, traditional analytical methods of triglyceride and glucose are time-consuming, laborious, and costly. In this study, a simple, practical, and reliable near-infrared (NIR) spectroscopic analysis method was developed for the rapid determination of glucose and triglyceride levels in an in vivo model of metabolic disorders using Drosophila induced by high-sugar or high-fat diets. The partial least squares (PLS) model was constructed and optimized using different spectral regions and spectral pretreatment methods. The overall results had satisfactory prediction performance. For Drosophila induced by high-sugar diets, the correlation coefficient (RP) and root mean square error of prediction (RMSEP) were 0.919 and 0.228 mmoL gprot-1 for triglyceride and 0.913 and 0.143 mmoL gprot-1 for glucose respectively; for Drosophila induced by high-fat diets, the RP and RMSEP were 0.871 and 0.097 mmoL gprot-1 for triglyceride and 0.853 and 0.154 mmoL gprot-1 for glucose, respectively. This study demonstrated the potential of using NIR spectroscopy combined with PLS in the determination of triglyceride and glucose levels in Drosophila, providing a rapid and effective method for monitoring metabolite levels during disease development and a possibility for evaluating metabolic diseases in humans in clinical practice.
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Affiliation(s)
- Jiamin Huang
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Pengwei Wang
- Key Laboratory of Watershed Science and Health of Zhejiang Province, School of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yu Wu
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Li Zeng
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Xiaoliang Ji
- Key Laboratory of Watershed Science and Health of Zhejiang Province, School of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, China
| | - Xu Zhang
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Mingjiang Wu
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Haibin Tong
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Yue Yang
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
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Chen M, Huang Y, Miao J, Fan Y, Lai K. A highly sensitive surface-enhanced Raman scattering sensor with MIL-100(Fe)/Au composites for detection of malachite green in fish pond water. Spectrochim Acta A Mol Biomol Spectrosc 2023; 292:122432. [PMID: 36753866 DOI: 10.1016/j.saa.2023.122432] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/11/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Concerns about food safety have been arisen due to the improper use of chemicals in aquaculture. Malachite green (MG) has attracted attention because of its illegal usage and its potential negative impacts on the environment and public health. Surface-enhanced Raman scattering (SERS) platforms coupled with different SERS substrates have been employed for rapid analysis of MG residues in food. However, the most commonly used SERS substrates were non-reusable and showed limited detection sensitivity. In this study, a novel SERS substrate with a good recyclability and a high sensitivity was prepared by electrostatically assembling together a metal-organic framework material called materials of institute lavoisie-100(Fe) (MIL-100(Fe)) and Au NPs. The lowest detectable concentration of MG was 10-13 M based on the optimal substrate. The SERS sensor was applied for the detection of the trace MG in fish pond water, which was accomplished with the correlation coefficients R2 = 0.991-0.996 in a concentration range of 10-6-10-13 M. Moreover, MIL-100(Fe)/Au was recycled at least five times, realizing a "detection to degradation", showing great potential for food contamination monitoring due to its distinguished performance.
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Affiliation(s)
- Min Chen
- College of Food Science and Technology, Shanghai Ocean University, No. 999 Hucheng Huan Road, LinGang New City, Shanghai 201306, China
| | - Yiqun Huang
- School of Food Science and Bioengineering, Changsha University of Science and Technology, 960, 2nd Section, Wanjiali South Rd, Changsha, Hunan 410114, China
| | - Junjian Miao
- College of Food Science and Technology, Shanghai Ocean University, No. 999 Hucheng Huan Road, LinGang New City, Shanghai 201306, China; Engineering Research Center of Food Thermal-Processing Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Yuxia Fan
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Keqiang Lai
- College of Food Science and Technology, Shanghai Ocean University, No. 999 Hucheng Huan Road, LinGang New City, Shanghai 201306, China; Engineering Research Center of Food Thermal-Processing Technology, Shanghai Ocean University, Shanghai 201306, China.
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7
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Imashuku S. Rapid determination of the approximate content of bastnäsite in ores using cathodoluminescence imaging. Spectrochim Acta A Mol Biomol Spectrosc 2023; 287:122055. [PMID: 36327801 DOI: 10.1016/j.saa.2022.122055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/29/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
A rapid determination of the rough content of the major rare earth element (REE)-bearing minerals (bastnäsite, monazite, and xenotime) can lead to a drastic reduction of the time required to analyze mineral ores for the extraction of REE metals, thus enabling the efficient exploration of mines with REE reserves. This study presents a method of using cathodoluminescence (CL) imaging to identify bastnäsite in mineral ores and determine the rough bastnäsite content rapidly. By investigating the luminescence colors in CL images and the peaks in CL spectra emitted by minerals in ores that include bastnäsite, the author found that bastnäsite can be identified by detecting dark red or red-orange luminescence in CL images of the ores in the wavelength range 420-680 nm or by detecting areas that emitted no luminescence in the 420-680 nm CL images but that do emit pale red luminescence in CL images in the broader wavelength range 350-1000 nm. The bastnäsite content in the ores can be estimated roughly from the fractional areas identified as bastnäsite in the CL images. The CL images can be obtained within 30 s. Therefore, CL imaging can prescreen mineral ores for subsequent more precise quantitative analyses (e.g., using inductively coupled plasma mass spectrometry or electron-probe microanalysis) by identifying mineral ores having a probable high bastnäsite content. This approach can drastically reduce the time required to explore mines with potential REE reserves.
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Affiliation(s)
- Susumu Imashuku
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
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8
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Yuan Y, Chen H, Han Y, Qiao F, Yan H. Analysis of anticancer compound, indole-3-carbinol, in broccoli using a new ultrasound-assisted dispersive-filter extraction method based on poly(deep eutectic solvent)-graphene oxide nanocomposite. J Pharm Anal 2022; 12:301-307. [PMID: 35582392 PMCID: PMC9091758 DOI: 10.1016/j.jpha.2021.03.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 03/16/2021] [Accepted: 03/31/2021] [Indexed: 12/02/2022] Open
Abstract
Indole-3-carbinol (I3C), an important anticancer compound found in broccoli, has attracted considerable attention. The rapid extraction and accurate analysis of I3C in the pharmaceutical industry in broccoli is challenging as I3C is unstable at low pH and high temperature. In this study, a rapid, accurate, and low-cost ultrasound-assisted dispersive-filter extraction (UADFE) technique based on poly(deep eutectic solvent)-graphene oxide (PDES-GO) adsorbent was developed for the isolation and analysis of I3C in broccoli for the first time. PDES-GO with multiple adsorption interactions and a fast mass transfer rate was synthesized to accelerate adsorption and desorption. UADFE was developed by combining dispersive solid-phase extraction (DSPE) and filter solid-phase extraction (FSPE) to realize rapid extraction and separation. Based on the above two strategies, the proposed PDES-GO-UADFE method coupled with high-performance liquid chromatography (HPLC) allowed the rapid (15-16 min), accurate (84.3%-96.4%), and low-cost (adsorbent: 3.00 mg) analysis of I3C in broccoli and was superior to solid-phase extraction, DSPE, and FSPE methods. The proposed method showed remarkable linearity (r=0.9998; range: 0.0840-48.0 μg/g), low limit of quantification (0.0840 μg/g), and high precision (relative standard deviation ≤5.6%). Therefore, the PDES-GO-UADFE-HPLC method shows significant potential in the field of pharmaceutical analysis for the separation and analysis of anti-cancer compounds in complex plant samples.
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Affiliation(s)
- Yanan Yuan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Pharmaceutical Science, Hebei University, Baoding, Hebei, 071002, China
- Key Laboratory of Public Health Safety of Hebei Province, Institute of Life Science and Green Development, College of Public Health, Hebei University, Baoding, Hebei, 071002, China
| | - Huanhuan Chen
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Pharmaceutical Science, Hebei University, Baoding, Hebei, 071002, China
| | - Yehong Han
- Key Laboratory of Public Health Safety of Hebei Province, Institute of Life Science and Green Development, College of Public Health, Hebei University, Baoding, Hebei, 071002, China
| | - Fengxia Qiao
- College of Biochemistry, Baoding University, Baoding, Hebei, 071000, China
| | - Hongyuan Yan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Pharmaceutical Science, Hebei University, Baoding, Hebei, 071002, China
- Key Laboratory of Public Health Safety of Hebei Province, Institute of Life Science and Green Development, College of Public Health, Hebei University, Baoding, Hebei, 071002, China
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Godbold R, Whiting L, Adams C, Naidu Y, Pattison N. The experiences of student nurses in a pandemic: A qualitative study. Nurse Educ Pract 2021; 56:103186. [PMID: 34555786 PMCID: PMC8452386 DOI: 10.1016/j.nepr.2021.103186] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 07/04/2021] [Accepted: 08/23/2021] [Indexed: 11/28/2022]
Abstract
Aim/objective To record and learn from the experiences of students working on clinical placement in a pandemic. Background In March of 2020, final and second year student nurses in England were given the option to join the Covid-19 pandemic work-force, paid as high-level health care assistants. Methods/design Using qualitative methods and rapid analysis techniques, this study gathered the unique experiences of 16 final year students, from all fields of nursing at a University in the East of England, who chose to complete their final extended placement in a diverse range of clinical placements at the height of the first wave of the pandemic. Data was collected between July and September 2020. Results Five key themes were identified across our data: rationale for undertaking the extended placement, role tensions, caring for patients and their families, the impact on teaching and learning, and personal health and wellbeing. Conclusions While our participants reported largely positive experiences including a perceived heightened preparedness for qualification, their experiences provide important insights for nurse educators for the education and support of future students going into similar situations, in particular relating to welfare and support, preparation for placement, resilience, e-learning and learning on the front line.
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Affiliation(s)
- Rosemary Godbold
- School of Health and Social Work, University of Hertfordshire College Lane, Hatfield, Hertfordshire AL10 9AB, United Kingdom.
| | - Lisa Whiting
- School of Health and Social Work, University of Hertfordshire College Lane, Hatfield, Hertfordshire AL10 9AB, United Kingdom.
| | - Claire Adams
- School of Health and Social Work, University of Hertfordshire College Lane, Hatfield, Hertfordshire AL10 9AB, United Kingdom.
| | - Yogini Naidu
- School of Health and Social Work, University of Hertfordshire College Lane, Hatfield, Hertfordshire AL10 9AB, United Kingdom.
| | - Natalie Pattison
- School of Health and Social Work, University of Hertfordshire College Lane, Hatfield, Hertfordshire AL10 9AB, United Kingdom.
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10
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Wan Y, Holman HA, Hansen C. Interactive Analysis for Large Volume Data from Fluorescence Microscopy at Cellular Precision. Comput Graph 2021; 98:138-149. [PMID: 34602661 PMCID: PMC8486154 DOI: 10.1016/j.cag.2021.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The main objective for understanding fluorescence microscopy data is to investigate and evaluate the fluorescent signal intensity distributions as well as their spatial relationships across multiple channels. The quantitative analysis of 3D fluorescence microscopy data needs interactive tools for researchers to select and focus on relevant biological structures. We developed an interactive tool based on volume visualization techniques and GPU computing for streamlining rapid data analysis. Our main contribution is the implementation of common data quantification functions on streamed volumes, providing interactive analyses on large data without lengthy preprocessing. Data segmentation and quantification are coupled with brushing and executed at an interactive speed. A large volume is partitioned into data bricks, and only user-selected structures are analyzed to constrain the computational load. We designed a framework to assemble a sequence of GPU programs to handle brick borders and stitch analysis results. Our tool was developed in collaboration with domain experts and has been used to identify cell types. We demonstrate a workflow to analyze cells in vestibular epithelia of transgenic mice.
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Affiliation(s)
- Yong Wan
- The University of Utah, Salt Lake City, 84112, USA
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11
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Shimizu R, Masaki H, Yasuike S. Simple and rapid quantification of chromium, arsenic, and selenium in bituminous coal samples using a desktop energy dispersive X-ray fluorescence analyzer. Appl Radiat Isot 2021; 176:109877. [PMID: 34365203 DOI: 10.1016/j.apradiso.2021.109877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 07/12/2021] [Accepted: 07/22/2021] [Indexed: 10/20/2022]
Abstract
In this study, the simple and rapid quantification of Cr, As, and Se in bituminous coal was achieved by energy dispersive X-ray fluorescence (EDXRF) spectrometry using pressed and powdered samples. The accuracy of the EDXRF method was improved by spectral processing optimization so the net intensity of the analytical X-ray line reflected the actual value. The EDXRF method provides results that are comparable to those obtained using traditional chemical analysis methods with two types of samples and it reduces the analysis time by 66% for pellet samples and 90% for powder samples.
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Affiliation(s)
- Ryuichi Shimizu
- Central Research Institute of Electric Power Industry (CRIEPI) 1646 Abiko, Abiko-shi, Chiba, 270-1194, Japan.
| | - Hiroyuki Masaki
- Central Research Institute of Electric Power Industry (CRIEPI) 1646 Abiko, Abiko-shi, Chiba, 270-1194, Japan
| | - Shinji Yasuike
- Central Research Institute of Electric Power Industry (CRIEPI) 1646 Abiko, Abiko-shi, Chiba, 270-1194, Japan
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12
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Nevedal AL, Reardon CM, Opra Widerquist MA, Jackson GL, Cutrona SL, White BS, Damschroder LJ. Rapid versus traditional qualitative analysis using the Consolidated Framework for Implementation Research (CFIR). Implement Sci 2021; 16:67. [PMID: 34215286 PMCID: PMC8252308 DOI: 10.1186/s13012-021-01111-5] [Citation(s) in RCA: 123] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Accepted: 04/05/2021] [Indexed: 12/14/2022] Open
Abstract
Background Qualitative approaches, alone or in mixed methods, are prominent within implementation science. However, traditional qualitative approaches are resource intensive, which has led to the development of rapid qualitative approaches. Published rapid approaches are often inductive in nature and rely on transcripts of interviews. We describe a deductive rapid analysis approach using the Consolidated Framework for Implementation Research (CFIR) that uses notes and audio recordings. This paper compares our rapid versus traditional deductive CFIR approach. Methods Semi-structured interviews were conducted for two cohorts of the Veterans Health Administration (VHA) Diffusion of Excellence (DoE). The CFIR guided data collection and analysis. In cohort A, we used our traditional CFIR-based deductive analysis approach (directed content analysis), where two analysts completed independent in-depth manual coding of interview transcripts using qualitative software. In cohort B, we used our new rapid CFIR-based deductive analysis approach (directed content analysis), where the primary analyst wrote detailed notes during interviews and immediately “coded” notes into a MS Excel CFIR construct by facility matrix; a secondary analyst then listened to audio recordings and edited the matrix. We tracked time for our traditional and rapid deductive CFIR approaches using a spreadsheet and captured transcription costs from invoices. We retrospectively compared our approaches in terms of effectiveness and rigor. Results Cohorts A and B were similar in terms of the amount of data collected. However, our rapid deductive CFIR approach required 409.5 analyst hours compared to 683 h during the traditional deductive CFIR approach. The rapid deductive approach eliminated $7250 in transcription costs. The facility-level analysis phase provided the greatest savings: 14 h/facility for the traditional analysis versus 3.92 h/facility for the rapid analysis. Data interpretation required the same number of hours for both approaches. Conclusion Our rapid deductive CFIR approach was less time intensive and eliminated transcription costs, yet effective in meeting evaluation objectives and establishing rigor. Researchers should consider the following when employing our approach: (1) team expertise in the CFIR and qualitative methods, (2) level of detail needed to meet project aims, (3) mode of data to analyze, and (4) advantages and disadvantages of using the CFIR. Supplementary Information The online version contains supplementary material available at 10.1186/s13012-021-01111-5.
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Affiliation(s)
- Andrea L Nevedal
- Center for Innovation to Implementation (Ci2i), VA Palo Alto Health Care System (152-MPD), 795 Willow Road, Building 324, Menlo Park, CA, 94025, USA.
| | - Caitlin M Reardon
- Veterans Affairs (VA) Center for Clinical Management Research, Ann Arbor Healthcare System, 2215 Fuller Rd. (152), Ann Arbor, MI, 48105, USA
| | - Marilla A Opra Widerquist
- Veterans Affairs (VA) Center for Clinical Management Research, Ann Arbor Healthcare System, 2215 Fuller Rd. (152), Ann Arbor, MI, 48105, USA
| | - George L Jackson
- Center of Innovation to Accelerate Discovery and Practice Transformation (ADAPT), Durham VA Health Care System, Durham, USA.,Department of Population Health Science, Duke University, Durham, USA.,Division of General Internal Medicine, Duke University, Durham, USA.,Department of Family Medicine and Community Health, Duke University, Durham, USA
| | - Sarah L Cutrona
- Center for Healthcare Organization & Implementation Research, Bedford & Boston VA Medical Centers, Boston, USA.,Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, USA.,Division of General Internal Medicine, University of Massachusetts Medical School, Worcester, USA
| | - Brandolyn S White
- Center of Innovation to Accelerate Discovery and Practice Transformation (ADAPT), Durham VA Health Care System, Durham, USA
| | - Laura J Damschroder
- Veterans Affairs (VA) Center for Clinical Management Research, Ann Arbor Healthcare System, 2215 Fuller Rd. (152), Ann Arbor, MI, 48105, USA
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Wang J, Zou L, Xu J, Zhang R, Zhang H. Molecularly imprinted fluoroprobes doped with Ag nanoparticles for highly selective detection of oxytetracycline in real samples. Anal Chim Acta 2021; 1161:338326. [PMID: 33896557 DOI: 10.1016/j.aca.2021.338326] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 02/12/2021] [Accepted: 02/13/2021] [Indexed: 02/07/2023]
Abstract
A molecularly imprinted polymer (MIP), which is synthesized by a nanomolding process around a template, has emerged as a promising analytical tool for environmental quality monitoring and food safety test. In this work, a fluoroprobe with Ag-doped MIP nanolayer (16 nm thickness) is successfully prepared for the highly selective detection of oxytetracycline (OTC) in real samples (i.e. Yangtze River water, swine urine). In the MIP nanolayer, two functional monomers (i.e. 4-(2-acrylamidoethylcarbamoyl)-3-fluorophenylboronic acid, methacrylic acid) synergistically constitute the specific recognition sites. Meanwhile, the doped Ag enhances the detection sensitivity (with a detection limit of 5.38 nM) and accelerates the detection rate (within 2.5 min) even in real samples. Therefore, the present study paves the way for the preparation of MIP-based fluoroprobes, showing great prospects in environmental quality and food safety tests.
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14
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Chen X, Siesler HW, Yan H. Rapid analysis of wheat flour by different handheld near-infrared spectrometers: A discussion of calibration model maintenance and performance comparison. Spectrochim Acta A Mol Biomol Spectrosc 2021; 252:119504. [PMID: 33588361 DOI: 10.1016/j.saa.2021.119504] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 01/14/2021] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
With the commercial availability of handheld near-infrared (NIR) spectrometers at significantly reduced costs, novel applications for qualitative and quantitative in-the-field and on-site analysis of such instruments for new user communities are currently reported. In the present study, the feasibility of rapid quantitative analysis of the essential quality parameters protein, wet gluten, moisture, ash, and sedimentation of wheat flour samples with three handheld NIR spectrometers based on different monochromator principles (Linear Variable Filter, Fourier-Transform Technique and Fabry-Perot Tunable Filter) has been investigated. In view of the long-term (two years) measurement and calibration schedule with reference sample batches of significantly varying parameter values, the necessary countermeasures for the important issue of calibration maintenance have been addressed and discussed in detail. Due to the variation of available reference values for the different flour parameters, the total number of reference samples varied between 124 (for sedimentation) and 235 (for moisture). These samples were then split up in a 3/1 calibration/test set ratio. Based on the detailed analysis of the statistical calibration parameters and the prediction accuracy for the test sample sets of the different flour parameters, the performance of the spectrometers under investigation has been compared. Despite instrumental and sampling deficiencies, such as hardware changes and significantly varying sample batches, respectively, during the long-term measurement schedule, the results proved the general suitability of the different handheld NIR spectrometers for the rapid quantitative on-site determination of the essential wheat flour parameters.
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Affiliation(s)
- Xinyu Chen
- Department of Physical Chemistry, University of Duisburg-Essen, D 45117 Essen, Germany
| | - H W Siesler
- Department of Physical Chemistry, University of Duisburg-Essen, D 45117 Essen, Germany
| | - Hui Yan
- School of Biotechnology, Jiangsu University of Science and Technology, 212018 Zhenjiang, Jiangsu, China.
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Hara R, Ishigaki M, Ozaki Y, Ahamed T, Noguchi R, Miyamoto A, Genkawa T. Effect of Raman exposure time on the quantitative and discriminant analyses of carotenoid concentrations in intact tomatoes. Food Chem 2021; 360:129896. [PMID: 33989876 DOI: 10.1016/j.foodchem.2021.129896] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/14/2021] [Accepted: 04/17/2021] [Indexed: 01/11/2023]
Abstract
The significant worldwide expansion of the health food market, which includes functional fruits and vegetables, requires a simple and rapid analytical method for the on-site analysis of functional components, such as carotenoids, in fruits and vegetables, and Raman spectroscopy is a powerful candidate. Herein, we clarified the effects of Raman exposure time on quantitative and discriminant analysis accuracies. Raman spectra of intact tomatoes with various carotenoid concentrations were acquired and used to develop partial least squares regression (PLSR) and partial least squares discriminant analysis (PLS-DA) models. The accuracy of the PLSR model was superior (R2 = 0.87) when Raman spectra were acquired 10 s, but decreased with decreasing exposure time (R2 = 0.69; 0.7 s). The accuracy of the PLS-DA model was unaffected by exposure time (hit rate: 90%). We conclude that Raman spectroscopy combined with PLS-DA is useful for the on-site analysis of carotenoids in fruits and vegetables.
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Affiliation(s)
- Risa Hara
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan; Research and Development Department, Yokogawa Electronic Corporation, 2-9-32, Nakacho, Musashino, Tokyo 180-8750, Japan.
| | - Mika Ishigaki
- Institute of Agricultural and Life Sciences, Academic Assembly, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan.
| | - Yukihiro Ozaki
- School of Biological and Environmental Sciences, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan.
| | - Tofael Ahamed
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
| | - Ryozo Noguchi
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
| | - Aiko Miyamoto
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan; Institute of Food Research, National Agriculture and Food Research Organization, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8602, Japan.
| | - Takuma Genkawa
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan; Institute of Food Research, National Agriculture and Food Research Organization, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8602, Japan.
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Lai H, Zhang H, Li G, Hu Y. Bimetallic AgNPs@dopamine modified-halloysite nanotubes-AuNPs for adenine determination using surface-enhanced Raman scattering. Mikrochim Acta 2021; 188:127. [PMID: 33733686 DOI: 10.1007/s00604-021-04778-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 03/03/2021] [Indexed: 01/14/2023]
Abstract
A bimetallic nanoparticles modified halloysite nanotubes (HNTs) hybrid was prepared by embedding AgNPs and modifying AuNPs on the inner or outer wall of dopamine-modified HNTs (DHNTs) in sequence. The resulting bimetallic AgNPs@DHNTs-AuNPs hybrid as surface-enhanced Raman scattering (SERS) substrate exhibited improved enhancement ability over monometallic AgNPs@DHNTs, and DHNTs-AuNPs substrates, with intensity ratios of about 48:1:9 (crystal violet) and 11:1:2 (p-phenylenediamine). The giant SERS effect of AgNPs@DHNTs-AuNPs substrate is probably attributed to the synergetic enhancement of the electromagnetic field (Au/Ag), optical plasmon force, molecular enrichment (HNTs), and charge transfer (NPs-dopamine-molecules). The sensitive and reproductive AgNPs@DHNTs-AuNPs substrate was applied for SERS determination of adenine with a linear range of 0.010-0.50 mg·L-1 and a detection limit of 2.2 μg·L-1. The SERS method enables the rapid determination of adenine in fish, chicken kidney and heart, and serum samples, with recoveries of 83.5-121.6% and relative standard deviations of 2.5-7.9%. The SERS substrate has high value for rapid analysis of food and biomarker determinations. Schematic illustration of the preparation of AgNPs@HNTs-AuNPs for SERS analysis of adenine in complex sample.
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Taylor SP, Short RT, Asher AM, Taylor B, Beidas RS. A rapid pre-implementation evaluation to inform a family engagement navigator program during COVID-19. Implement Sci Commun 2020; 1:110. [PMID: 33298192 PMCID: PMC7724442 DOI: 10.1186/s43058-020-00098-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/27/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Innovative models of family engagement and support are needed in the intensive care unit (ICU) during times of restricted visitation such as the COVID-19 pandemic. Limited understanding of the factors affecting the uptake and outcomes of different family support models hinders the implementation of best practices. We aimed to conduct a rapid pre-implementation evaluation of stakeholder-perceived facilitators and barriers to design implementation strategies to support a novel program using medical students to facilitate family-centered care in the ICU. METHODS We conducted a 2-step process. In step 1, we gathered contextual data via interview-style open-ended questions sent to clinicians and navigator stakeholders via email. We used electronic data collection due to the physical distancing requirements, the need to prioritize brief data collection for respondent burden, and the need for rapid knowledge gain. A codebook based on the Consolidated Framework for Implementation Research (CFIR), an integrated framework from the field of implementation science, was used to analyze the findings. In step 2, a pilot of the intervention was implemented with 3 navigators over 2 weeks. Implementation strategies were developed to target barriers identified by the pre-implementation evaluation. RESULTS Fourteen (70%) of the identified stakeholders responded to the survey. Ten constructs encompassing all five CFIR domains were present in responses as implementation influencers, with the Intervention domain most frequently represented. Through these results and operational feedback from navigators during the pilot period, stakeholders selected multiple implementation strategies: audit and provide feedback, develop educational materials, conduct ongoing training, promote adaptability, assess and redesign workflow, identify and prepare champions, and engage community resources. CONCLUSIONS We demonstrated how a conceptually based pre-implementation program evaluation can be used to rapidly inform optimal implementation strategies. We report key factors to inform design and implementation strategies for a novel ICU family engagement navigator program that may be useful to others wishing to adopt similar programs.
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Affiliation(s)
- Stephanie Parks Taylor
- Department of Internal Medicine, Atrium Health's Carolinas Medical Center, 1000 Blythe Blvd. MEB 5th Floor, Charlotte, NC, 28203, USA.
| | - Robert T Short
- University of North Carolina School of Medicine, Chapel Hill, USA
| | - Anthony M Asher
- University of North Carolina School of Medicine, Chapel Hill, USA
| | - Brice Taylor
- Department of Internal Medicine, Division of Pulmonary and Critical Care, Atrium Health's Carolinas Medical Center, Charlotte, USA
| | - Rinad S Beidas
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA.,Department of Medical Ethics & Health Policy, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA.,Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA.,Penn Implementation Science Center at the Leonard Davis Institute of Health Economics (PISCE@LDI), University of Pennsylvania, Philadelphia, USA
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Tanoue R, Nozaki K, Nomiyama K, Kunisue T, Tanabe S. Rapid analysis of 65 pharmaceuticals and 7 personal care products in plasma and whole-body tissue samples of fish using acidic extraction, zirconia-coated silica cleanup, and liquid chromatography-tandem mass spectrometry. J Chromatogr A 2020; 1631:461586. [PMID: 33010711 DOI: 10.1016/j.chroma.2020.461586] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/16/2020] [Accepted: 09/25/2020] [Indexed: 11/15/2022]
Abstract
The presence of pharmaceuticals and personal care products (PPCPs) in aquatic systems has raised concern about their potential adverse effects on aquatic organisms. Considering the fact that the physiological/biological effects of PPCPs are triggered when their concentrations in the organism exceeds the respective threshold values, it is important to understand the bioconcentration and toxicokinetics of PPCPs in aquatic organisms. In the present study, we developed a convenient analytical method for the determination of 65 pharmaceuticals and 7 personal care products (log Kow = 0.14-6.04) in plasma and whole-body tissues of fish. The analytical method consists of ultrasound-assisted extraction in methanol/acetonitrile (1:1, v/v,) acidified with acetic acid-ammonium acetate buffer (pH 4), cleanup on a HybridSPE®-Phospholipid cartridge (zirconia-coated silica cartridge), and quantification with liquid chromatography-tandem mass spectrometry (LC-MS/MS). Acceptable accuracy (internal standard-corrected recovery: 70%-120%) and intra- and inter-day precision (coefficient of variation: <15%) were obtained for both plasma and whole-body tissue samples. In addition, low method detection limits were achieved for both plasma (0.0077 to 0.93 ng mL-1) and whole-body tissue (0.022 to 4.3 ng g - 1 wet weight), although the developed method is simple and fast - a batch of 24 samples can be prepared within 6 h, excluding the time for measurement with LC-MS/MS. The developed method was successfully applied to the analysis of PPCPs in plasma and whole-body tissue samples of fish collected in a treated wastewater-dominated stream, for a comprehensive evaluation of their bioconcentration properties. The analytical method developed in the present study is sufficiently accurate, sensitive, and rapid, and thus highly useful for the comprehensive evaluation of PPCP residues in fish and would aid in future exposome and risk assessment.
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Affiliation(s)
- Rumi Tanoue
- Center for Marine Environmental Studies (CMES), Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan.
| | - Kazusa Nozaki
- Center for Marine Environmental Studies (CMES), Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Kei Nomiyama
- Center for Marine Environmental Studies (CMES), Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Tatsuya Kunisue
- Center for Marine Environmental Studies (CMES), Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Shinsuke Tanabe
- Center for Marine Environmental Studies (CMES), Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
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Lin L, Xu M, Ma L, Zeng J, Zhang F, Qiao Y, Wu Z. A rapid analysis method of safflower (Carthamus tinctorius L.) using combination of computer vision and near-infrared. Spectrochim Acta A Mol Biomol Spectrosc 2020; 236:118360. [PMID: 32330825 DOI: 10.1016/j.saa.2020.118360] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/08/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
The quality of safflower (Carthamus tinctorius L.) in the market is uneven due to the problems of dyeing and adulteration of safflower, and there is no perfect standard for the classification of quality grade of safflower at present. In this study, computer vision (CV) and near-infrared (NIR) were combined to realize the rapid and nondestructive analysis of safflower. First, the partial least squares discrimination analysis (PLS-DA) model was used to qualitatively identify the dyed safflower from 150 samples. Then the partial least squares (PLS) model was used for quantitative analysis of the hydroxy safflower yellow pigment A (HSYA) and water extract of undyed safflower. Herein, the discrimination rate of PLS-DA model reached 100%, and the residual predictive deviation (RPD) values of the PLS models for HSYA and water extract were 2.5046 and 5.6195, respectively. It indicated that the rapid analysis method combining CV and NIR was reliable, and its results can provide important reference for the formulation of safflower quality classification standards in the market.
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Affiliation(s)
- Ling Lin
- Beijing University of Chinese Medicine, Beijing 100102, China
| | - Manfei Xu
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Lijuan Ma
- Beijing University of Chinese Medicine, Beijing 100102, China; Pharmaceutical Engineering and New Drug Development of TCM of Ministry of Education, Beijing 100102, China
| | - Jingqi Zeng
- Fujian University of Traditional Chinese Medicine, College of Pharmacy, Fuzhou 350122, Fujian, China
| | - Fangyu Zhang
- Beijing University of Chinese Medicine, Beijing 100102, China
| | - Yanjiang Qiao
- Beijing University of Chinese Medicine, Beijing 100102, China; Pharmaceutical Engineering and New Drug Development of TCM of Ministry of Education, Beijing 100102, China
| | - Zhisheng Wu
- Beijing University of Chinese Medicine, Beijing 100102, China; Pharmaceutical Engineering and New Drug Development of TCM of Ministry of Education, Beijing 100102, China.
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Khaled A, Belinato JR, Pawliszyn J. Rapid and high-throughput screening of multi-residue pharmaceutical drugs in bovine tissue using solid phase microextraction and direct analysis in real time-tandem mass spectrometry (SPME-DART-MS/MS). Talanta 2020; 217:121095. [PMID: 32498882 DOI: 10.1016/j.talanta.2020.121095] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/24/2020] [Accepted: 04/25/2020] [Indexed: 12/20/2022]
Abstract
Direct Analysis in Real Time (DART) has become a popular research area in food safety monitoring due to its unique characteristics that allow rapid and high-throughput screening of complex matrices with minimal sample preparation. The current research aimed to investigate the detection and quantitation capabilities of solid phase microextraction (SPME) and DART coupled to tandem mass spectrometry MS/MS for a large number of pharmaceutical drugs covering a wide range of physico-chemical properties (log P, -1.22-5.97) in complex animal-food matrices such as beef tissue. 53% of the 98 target analytes selected initially could be efficiently ionized by DART and quantified at or below the Canadian maximum residue limits (MRLs) and US regulatory tolerances in bovine muscle. Despite using only two internal standards for correction, promising results were obtained for these analytes, where 62% of the detected analytes achieved linear correlation coefficients >0.99 within the evaluated range of concentrations (0.25-3X, where X corresponds to the MRL for each target analyte). In addition, more than 92% of the detected analytes achieved average accuracies within the 70-120% range of their true concentrations and intraday repeatability RSDs ≤25% at the 0.5X, 1X, and 2X concentration levels. The fully automated sample preparation workflow allowed for total extraction and analysis times as short as 1 min time per sample. While DART has limited capabilities in terms of analyte coverage, this research highlights the potential usefulness of SPME-DART-MS/MS as a method for rapid analysis in food safety monitoring applications.
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He D, Wu Z, Cui B, Jin Z, Xu E. A fluorometric method for aptamer-based simultaneous determination of two kinds of the fusarium mycotoxins zearalenone and fumonisin B 1 making use of gold nanorods and upconversion nanoparticles. Mikrochim Acta 2020; 187:254. [PMID: 32239300 DOI: 10.1007/s00604-020-04236-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 03/24/2020] [Indexed: 01/06/2023]
Abstract
An aptamer-based assay for the determination of two different kinds of fusarium mycotoxins, i.e., zearalenone (ZEN) and fumonisin B1 (FB1), is presented. Based on the inner filter effect (IFE) strategy, the contents of ZEN and FB1 can be simultaneously quantified. It is making use of 65-nm gold nanorods (AuNRs), 20-nm upconversion nanoparticles (UCNPs), fluorescence dyes, and DNA sequences. In the absence of ZEN and FB1, the UCNPs and AuNRs associate through DNA sequences. Due to IFE effect, weak fluorescence signals are collected. In the presence of ZEN or FB1, UCNPs and AuNRs become unstable and partially separate from each other. This results in the recovery of fluorescence signals. Under 980-nm laser excitation, the logarithmic values of fluorescence signal intensities at 606 nm and 753 nm gradually increase with the concentration of ZEN and FB1 in the ranges 0.05-100 μg L-1 (the coefficient of determination is 0.997) and 0.01-100 ng L-1 (the coefficient of determination is 0.986), respectively. The limits of detection (LOD) of the fabricated assay for ZEN and FB1 are 0.01 μg L-1 and 0.003 ng L-1, respectively. The proposed method has a high selectivity over other competitive mycotoxins, including aflatoxin B1, ochratoxin A, patulin and ochratoxin B. The applicability of the assay was evaluated in the determination of ZEN and FB1 contents in spiked corn samples. The average recoveries ranged from 89.9 to 106.6%. This result confirms the practicality of this method. Graphical abstract Schematic representation of an aptamer-based fluorometric method for simultaneous determination of two kinds of the fusarium mycotoxins zearalenone and fumonisin B1.
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Wang Y, Zhao Z, Qin J, Liu H, Liu A, Xu M. Rapid in situ analysis of l-histidine and α-lactose in dietary supplements by fingerprint peaks using terahertz frequency-domain spectroscopy. Talanta 2020; 208:120469. [PMID: 31816746 DOI: 10.1016/j.talanta.2019.120469] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/09/2019] [Accepted: 10/10/2019] [Indexed: 02/08/2023]
Abstract
A simple, green and nondestructive method based on terahertz fingerprint peaks has been developed for rapid in situ analysis of l-histidine and α-lactose in dietary supplements. Fingerprint absorption peaks of l-histidine and α-lactose located at 0.77 and 0.53 THz could be directly used for identification and quantitation of these analytes in commercial dietary supplements. Compared with the partial least squares regression model (PLSR), the linear least squares regression (LLSR) method based on peak areas presented better performance, with the linear correlation coefficients of 0.9899 and 0.9910 for l-histidine and α-lactose, respectively. Furthermore, analysis time per sample can be shortened to less than 1 min due to the narrower spectral acquisition region. The accuracies were 94.8-110% and 98.9-110%, comparable to those of ion chromatography for l-histidine and high-performance liquid chromatography for α-lactose. The results presented great potential of the developed method for rapid in situ analysis of nutrients in dietary supplements.
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Affiliation(s)
- Yongmei Wang
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
| | - Zongshan Zhao
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
| | - Jianyuan Qin
- Centre for Terahertz Research, China Jiliang University, Hangzhou, 310018, China.
| | - Huan Liu
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
| | - Aifeng Liu
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
| | - Mengmeng Xu
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
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Chen X, Hua L, Jiang J, Hu F, Wan N, Li H. Multi-capillary column high-pressure photoionization time-of-flight mass spectrometry and its application for online rapid analysis of flavor compounds. Talanta 2019; 201:33-39. [PMID: 31122430 DOI: 10.1016/j.talanta.2019.03.103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/23/2019] [Accepted: 03/30/2019] [Indexed: 12/15/2022]
Abstract
High-pressure photoionization time-of-flight mass spectrometry (HPPI-TOFMS) is a versatile and highly sensitive analytical technique for online and real-time analysis of trace volatile organic compounds in complex mixtures. However, discrimination of isomers is usually a great challenge for the soft ionization method, and matrix effect is also inevitable under high pressure in the HPPI source. In this work, we describe a first attempt to develop a two-dimensional (2D) hyphenated instrument by coupling of a multi-capillary column (MCC) with a HPPI-TOFMS to overcome these problems. The capability of the MCC-HPPI-TOFMS for discrimination of isomeric compounds and elimination of the matrix effect was demonstrated by analyzing flavor mixtures. With the merits of fast separation, soft ionization and high detection sensitivity, satisfactory effects in the 2D analysis were achieved, despite the relatively low chromatographic resolution of MCC. As a result, three isomers, eucalyptol, l-menthone and linalool, in a flavor mixture were successfully categorized within 90 s, and the matrix effect caused by solvent ethanol was significantly eliminated as well. The limits of detection (LODs) down to sub-ppbv level were achieved for the investigated five flavor compounds without any enrichment process, and an excellent repeatability was obtained with the relative standard deviations (RSDs) of signal intensities ≤5%. The MCC-HPPI-TOFMS system was preliminarily applied for rapid and online analysis of flavor compounds in the exhaled gas of a volunteer after mouth rinsing with a gargle product. The rapid changes of the three flavor compounds, as well as the steady endogenous metabolite acetone, in the exhaled gas were successfully determined with a time-resolution of only 1.5 min.
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Affiliation(s)
- Xuan Chen
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning, 116023, People's Republic of China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing, 100049, People's Republic of China.
| | - Lei Hua
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning, 116023, People's Republic of China
| | - Jichun Jiang
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning, 116023, People's Republic of China
| | - Fan Hu
- Henan Province Medical Instrument Testing Institute, 79 Xiongerhe Road, Zhengzhou, 450018, People's Republic of China
| | - Ningbo Wan
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning, 116023, People's Republic of China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing, 100049, People's Republic of China
| | - Haiyang Li
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning, 116023, People's Republic of China
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Othman A, Goggin KA, Tahir NI, Brodrick E, Singh R, Sambanthamurthi R, Parveez GKA, Davies AN, Murad AJ, Muhammad NH, Ramli US, Murphy DJ. Use of headspace-gas chromatography-ion mobility spectrometry to detect volatile fingerprints of palm fibre oil and sludge palm oil in samples of crude palm oil. BMC Res Notes 2019; 12:229. [PMID: 30992056 PMCID: PMC6469128 DOI: 10.1186/s13104-019-4263-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 04/06/2019] [Indexed: 11/10/2022] Open
Abstract
Objective The addition of residual oils such as palm fibre oil (PFO) and sludge palm oil (SPO) to crude palm oil (CPO) can be problematic within supply chains. PFO is thought to aggravate the accumulation of monochloropropanediols (MCPDs) in CPO, whilst SPO is an acidic by-product of CPO milling and is not fit for human consumption. Traditional targeted techniques to detect such additives are costly, time-consuming and require highly trained operators. Therefore, we seek to assess the use of gas chromatography–ion mobility spectrometry (GC–IMS) for rapid, cost-effective screening of CPO for the presence of characteristic PFO and SPO volatile organic compound (VOC) fingerprints. Results Lab-pressed CPO and commercial dispatch tank (DT) CPO were spiked with PFO and SPO, respectively. Both additives were detectable at concentrations of 1% and 10% (w/w) in spiked lab-pressed CPO, via seven PFO-associated VOCs and 21 SPO-associated VOCs. DT controls could not be distinguished from PFO-spiked DT CPO, suggesting these samples may have already contained low levels of PFO. DT controls were free of SPO. SPO was detected in all SPO-spiked dispatch tank samples by all 21 of the previously distinguished VOCs and had a significant fingerprint consisting of four spectral regions. Electronic supplementary material The online version of this article (10.1186/s13104-019-4263-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Abrizah Othman
- Malaysian Palm Oil Board, No 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Kirstie A Goggin
- Faculty of Computing, Engineering and Science, University of South Wales, Pontypridd, CF37 1DL, UK
| | - Noor Idayu Tahir
- Malaysian Palm Oil Board, No 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Emma Brodrick
- IMSPEX Diagnostics Ltd., Ty Menter Navigation Park, Abercynon, CF45 4SN, UK
| | - Rajinder Singh
- Malaysian Palm Oil Board, No 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Ravigadevi Sambanthamurthi
- Malaysian Palm Oil Board, No 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Ghulam K A Parveez
- Malaysian Palm Oil Board, No 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Antony N Davies
- Faculty of Computing, Engineering and Science, University of South Wales, Pontypridd, CF37 1DL, UK.,Nouryon b.V., Deventer, The Netherlands
| | - Abdul J Murad
- Malaysian Palm Oil Board, No 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Nor H Muhammad
- Malaysian Palm Oil Board, No 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Umi S Ramli
- Malaysian Palm Oil Board, No 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia.
| | - Denis J Murphy
- Faculty of Computing, Engineering and Science, University of South Wales, Pontypridd, CF37 1DL, UK.
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Chen Z, Li G, Zhang Z. Miniaturized array gas membrane separation strategy for rapid analysis of complex samples by surface-enhanced Raman scattering. Anal Chim Acta 2019; 1065:29-39. [PMID: 31005148 DOI: 10.1016/j.aca.2019.03.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 03/08/2019] [Accepted: 03/15/2019] [Indexed: 02/06/2023]
Abstract
It remains a significant challenge for fast and high-throughput detection of trace analytes in complex samples with surface-enhanced Raman scattering (SERS) strategy due to the severe interference from matrices. In this work, a miniaturized array gas membrane separation (AGMS) device coupled with SERS was designed and drew up to eliminate matrix influence and improve the reproducibility of SERS signal during real sample analysis. The design of miniaturized AGMS tube was optimized based on quantitative calculation of its air permeability by computational fluid dynamics simulation. A 10 mm height tube was selected as an optimized design with a recovery of 98.3% for acetaldehyde. The practical feasibility of miniaturized AGMS was validated based on the applications in biochemical analysis and food analysis, such as albuminuria and acetaldehyde in urine sample and metaldehyde and thiram in food samples. The results showed that SERS responses of all analytes dramatically increased by eliminating sample matrices after miniaturized AGMS process. Acetaldehyde, albuminuria, metaldehyde and thiram in real samples could be accurately quantified with recoveries of 82.0-123.3%, and the analytical results were validated by corresponding standard methods with relative error ranging from -4.8% to 5.3%. Time consumption of miniaturized AGMS-SERS for one real sample analysis including sample preparation and determination was less than 20 min and could treat 96 samples with 45 min in one run. It is potential that the miniaturized AGMS technique automated by implementation with a robotic arm could greatly expand the range and accelerate the speed of SERS analysis.
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26
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Gale RC, Wu J, Erhardt T, Bounthavong M, Reardon CM, Damschroder LJ, Midboe AM. Comparison of rapid vs in-depth qualitative analytic methods from a process evaluation of academic detailing in the Veterans Health Administration. Implement Sci 2019; 14:11. [PMID: 30709368 PMCID: PMC6359833 DOI: 10.1186/s13012-019-0853-y] [Citation(s) in RCA: 309] [Impact Index Per Article: 61.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 01/07/2019] [Indexed: 11/17/2022] Open
Abstract
Background It is challenging to conduct and quickly disseminate findings from in-depth qualitative analyses, which can impede timely implementation of interventions because of its time-consuming methods. To better understand tradeoffs between the need for actionable results and scientific rigor, we present our method for conducting a framework-guided rapid analysis (RA) and a comparison of these findings to an in-depth analysis of interview transcripts. Methods Set within the context of an evaluation of a successful academic detailing (AD) program for opioid prescribing in the Veterans Health Administration, we developed interview guides informed by the Consolidated Framework for Implementation Research (CFIR) and interviewed 10 academic detailers (clinical pharmacists) and 20 primary care providers to elicit detail about successful features of the program. For the RA, verbatim transcripts were summarized using a structured template (based on CFIR); summaries were subsequently consolidated into matrices by participant type to identify aspects of the program that worked well and ways to facilitate implementation elsewhere. For comparison purposes, we later conducted an in-depth analysis of the transcripts. We described our RA approach and qualitatively compared the RA and deductive in-depth analysis with respect to consistency of themes and resource intensity. Results Integrating the CFIR throughout the RA and in-depth analysis was helpful for providing structure and consistency across both analyses. Findings from the two analyses were consistent. The most frequently coded constructs from the in-depth analysis aligned well with themes from the RA, and the latter methods were sufficient and appropriate for addressing the primary evaluation goals. Our approach to RA was less resource-intensive than the in-depth analysis, allowing for timely dissemination of findings to our operations partner that could be integrated into ongoing implementation. Conclusions In-depth analyses can be resource-intensive. If consistent with project needs (e.g., to quickly produce information to inform ongoing implementation or to comply with a policy mandate), it is reasonable to consider using RA, especially when faced with resource constraints. Our RA provided valid findings in a short timeframe, enabling identification of actionable suggestions for our operations partner. Electronic supplementary material The online version of this article (10.1186/s13012-019-0853-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Randall C Gale
- Center for Innovation to Implementation (Ci2i), VA Palo Alto Health Care System, Stanford University, 795 Willow Rd, Menlo Park, CA, 94025, USA
| | - Justina Wu
- Center for Innovation to Implementation (Ci2i), VA Palo Alto Health Care System, Stanford University, 795 Willow Rd, Menlo Park, CA, 94025, USA
| | - Taryn Erhardt
- Center for Innovation to Implementation (Ci2i), VA Palo Alto Health Care System, Stanford University, 795 Willow Rd, Menlo Park, CA, 94025, USA
| | - Mark Bounthavong
- Veterans Health Administration, Pharmacy Benefits Management, Academic Detailing Service, Seattle, WA, USA
| | - Caitlin M Reardon
- VA Ann Arbor Center for Clinical Management Research, 2215 Fuller Rd (152), Ann Arbor, 48113-0170, MI, USA
| | - Laura J Damschroder
- VA Ann Arbor Center for Clinical Management Research, 2215 Fuller Rd (152), Ann Arbor, 48113-0170, MI, USA
| | - Amanda M Midboe
- Center for Innovation to Implementation (Ci2i), VA Palo Alto Health Care System, Stanford University, 795 Willow Rd, Menlo Park, CA, 94025, USA.
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Nielsen AV, Woolley AT. Device Fabrication and Fluorescent Labeling of Preterm Birth Biomarkers for Microchip Electrophoresis. Methods Mol Biol 2019; 1972:175-184. [PMID: 30847791 DOI: 10.1007/978-1-4939-9213-3_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
An unmet need exists for a clinical diagnostic to determine preterm birth (PTB) risk. Such an assessment is possible with high sensitivity and specificity using a panel of nine biomarkers. An integrated microfluidic analysis system for these biomarkers is being developed which includes microchip electrophoresis (μCE) separation. A t-shaped microchip device can be used to test the μCE portion of this integrated system to find appropriate separation conditions. These t-shaped microchips can be fabricated using photolithographically patterned Si templates and hot embossing. PTB biomarkers can be fluorescently labeled using an amine-reactive dye prior to μCE. The μCE conditions established using this t-shaped device should be useful in developing a complete integrated microfluidic system for PTB risk assessment.
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Affiliation(s)
- Anna V Nielsen
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| | - Adam T Woolley
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA.
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Nielsen AV, Nielsen JB, Sonker M, Knob R, Sahore V, Woolley AT. Microchip electrophoresis separation of a panel of preterm birth biomarkers. Electrophoresis 2018; 39:2300-2307. [PMID: 29683528 DOI: 10.1002/elps.201800078] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/13/2018] [Accepted: 04/14/2018] [Indexed: 11/09/2022]
Abstract
Preterm birth (PTB) is responsible for over one million infant deaths annually worldwide. Often, the first and only indication of PTB risk is the onset of early labor. Thus, there is an urgent need for an early PTB risk diagnostic that is inexpensive, reliable, and robust. Here, we describe the development of a microchip electrophoresis (μCE) method for separating a mixture of six PTB protein and peptide biomarkers present in maternal blood serum. μCE devices were photografted with a poly(ethylene glycol) diacrylate surface coating to regulate EOF and reduce nonspecific analyte adsorption. Separation conditions including buffer pH, buffer concentration, and applied electric field were varied to improve biomarker peak resolution while minimizing deleterious effects like Joule heating. In this way, it was possible to separate six PTB biomarkers, the first μCE separation of this biomarker panel. LODs were also measured for each of the six PTB biomarkers. In the future, this μCE separation can be integrated with upstream maternal blood serum sample preparation steps to yield a complete PTB risk diagnosis microdevice.
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Affiliation(s)
- Anna V Nielsen
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| | - Jacob B Nielsen
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| | - Mukul Sonker
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| | - Radim Knob
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| | - Vishal Sahore
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| | - Adam T Woolley
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
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29
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Dong J, Wu T, Xiao Y, Chen L, Xu L, Li M, Zhao M. Target-triggered transcription machinery for ultra-selective and sensitive fluorescence detection of nucleoside triphosphates in one minute. Biosens Bioelectron 2017; 100:333-340. [PMID: 28942346 DOI: 10.1016/j.bios.2017.09.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 09/06/2017] [Accepted: 09/17/2017] [Indexed: 01/02/2023]
Abstract
Nucleoside triphosphates (NTPs) play important roles in living organisms. However, no fluorescent assays are currently available to simply and rapidly detect multiple NTPs with satisfactory selectivity, sensitivity and low cost. Here we demonstrate for the first time a target-triggered in-vitro transcription machinery for ultra-selective, sensitive and instant fluorescence detection of multiple NTPs. The machinery assembles RNA polymerase, DNA template and non-target NTPs to convert the target NTP into equivalent RNA signal sequences which are monitored by the fluorescence enhancement of molecular beacon. The machinery offers excellent selectivity for the target NTP against NDP, NMP and dNTP. Notably, to accelerate the kinetics of the machinery while maintain its high specificity, we investigated the sequence of DNA templates systematically and established a set of guidelines for the design of the optimum DNA templates, which allowed for instant detection of the target NTP at fmol level in less than 1min. Furthermore, the machinery could be transformed into logic gates to study the coeffects of two NTPs in biosynthesis and real-time monitoring systems to reflect the distribution of NTP in nucleotide pools. These results provide very useful and low-cost tools for both biochemical tests and point-of-care analysis.
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Affiliation(s)
- Jiantong Dong
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Tongbo Wu
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yu Xiao
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Lu Chen
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Lei Xu
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Mengyuan Li
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Meiping Zhao
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
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Furutani S, Hagihara Y, Nagai H. On-site identification of meat species in processed foods by a rapid real-time polymerase chain reaction system. Meat Sci 2017; 131:56-59. [PMID: 28475952 DOI: 10.1016/j.meatsci.2017.04.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 03/11/2017] [Accepted: 04/18/2017] [Indexed: 11/15/2022]
Abstract
Correct labeling of foods is critical for consumers who wish to avoid a specific meat species for religious or cultural reasons. Therefore, gene-based point-of-care food analysis by real-time Polymerase Chain Reaction (PCR) is expected to contribute to the quality control in the food industry. In this study, we perform rapid identification of meat species by our portable rapid real-time PCR system, following a very simple DNA extraction method. Applying these techniques, we correctly identified beef, pork, chicken, rabbit, horse, and mutton in processed foods in 20min. Our system was sensitive enough to detect the interfusion of about 0.1% chicken egg-derived DNA in a processed food sample. Our rapid real-time PCR system is expected to contribute to the quality control in food industries because it can be applied for the identification of meat species, and future applications can expand its functionality to the detection of genetically modified organisms or mutations.
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Affiliation(s)
- Shunsuke Furutani
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Yoshihisa Hagihara
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Hidenori Nagai
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
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Stupar P, Opota O, Longo G, Prod'hom G, Dietler G, Greub G, Kasas S. Nanomechanical sensor applied to blood culture pellets: a fast approach to determine the antibiotic susceptibility against agents of bloodstream infections. Clin Microbiol Infect 2017; 23:400-405. [PMID: 28062319 DOI: 10.1016/j.cmi.2016.12.028] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/23/2016] [Accepted: 12/24/2016] [Indexed: 10/20/2022]
Abstract
OBJECTIVES The management of bloodstream infection, a life-threatening disease, largely relies on early detection of infecting microorganisms and accurate determination of their antibiotic susceptibility to reduce both mortality and morbidity. Recently we developed a new technique based on atomic force microscopy capable of detecting movements of biologic samples at the nanoscale. Such sensor is able to monitor the response of bacteria to antibiotic's pressure, allowing a fast and versatile susceptibility test. Furthermore, rapid preparation of a bacterial pellet from a positive blood culture can improve downstream characterization of the recovered pathogen as a result of the increased bacterial concentration obtained. METHODS Using artificially inoculated blood cultures, we combined these two innovative procedures and validated them in double-blind experiments to determine the susceptibility and resistance of Escherichia coli strains (ATCC 25933 as susceptible and a characterized clinical isolate as resistant strain) towards a selection of antibiotics commonly used in clinical settings. RESULTS On the basis of the variance of the sensor movements, we were able to positively discriminate the resistant from the susceptible E. coli strains in 16 of 17 blindly investigated cases. Furthermore, we defined a variance change threshold of 60% that discriminates susceptible from resistant strains. CONCLUSIONS By combining the nanomotion sensor with the rapid preparation method of blood culture pellets, we obtained an innovative, rapid and relatively accurate method for antibiotic susceptibility test directly from positive blood culture bottles, without the need for bacterial subculture.
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Affiliation(s)
- P Stupar
- Laboratory of Physics of Living Matter, BSP, EPFL, Lausanne, Switzerland
| | - O Opota
- Institute of Microbiology, University of Lausanne and University Hospital Centre, Lausanne, Switzerland
| | - G Longo
- Laboratory of Physics of Living Matter, BSP, EPFL, Lausanne, Switzerland; Istituto di Struttura della Materia-CNR, Rome, Italy
| | - G Prod'hom
- Institute of Microbiology, University of Lausanne and University Hospital Centre, Lausanne, Switzerland
| | - G Dietler
- Laboratory of Physics of Living Matter, BSP, EPFL, Lausanne, Switzerland
| | - G Greub
- Institute of Microbiology, University of Lausanne and University Hospital Centre, Lausanne, Switzerland.
| | - S Kasas
- Laboratory of Physics of Living Matter, BSP, EPFL, Lausanne, Switzerland; Plateforme de Morphologie, Université de Lausanne, Lausanne, Switzerland
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Kang J, Hossain MA, Park HC, Jang Y, Kim S, Song JY, Lee KJ, Kim TW. Rapid determination of β-lactam antimicrobial resistance in bacteria by a liquid chromatography-mass spectrometry-based method. Anal Bioanal Chem 2016; 408:8539-8549. [PMID: 27744479 DOI: 10.1007/s00216-016-9979-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 09/13/2016] [Accepted: 09/26/2016] [Indexed: 11/26/2022]
Abstract
Conventional antimicrobial susceptibility tests (ASTs) are very time consuming and insufficiently precise to promptly select a proper antimicrobial treatment. This difficulty disrupts the management of infections and exacerbates the development of antimicrobial resistance. Generally, antimicrobial resistance involves the chemical modification of an antimicrobial compound to an inactive form by an enzyme released by bacteria. This modification causes a structural change and is followed by a characteristic mass shift of the antimicrobials. Using this mechanism, we developed a new liquid chromatography-mass spectrometry method to rapidly determine the degree of resistance of Salmonella enterica subspecies enterica serovar Typhimurium (Salmonella Typhimurium), Escherichia coli, and Staphylococcus aureus to amoxicillin, ampicillin, and penicillin G, respectively. This method was successfully applied to 20 bacterial isolates from Korean slaughterhouses and farms. There were 18-Da mass shifts in resistant strains compared with susceptible strains of Salmonella Typhimurium, E. coli, and S. aureus, and the intensities of the hydrolyzed penicillin mass spectra were much higher in resistant strains than those in susceptible strains, which together indicate the reliability of this method. A comparison of the mass spectrometry-derived results with that from conventional ASTs revealed an identical classification of the tested bacteria according to sensitivity and resistance. Notably, this assay method requires only 2 h for determining the susceptibility status of a strain. This newly developed method is able to determine the extent of antimicrobial resistance qualitatively and quantitatively within a very short time and could be used to replace conventional AST methods. Graphical abstract Rapid determination of β-lactam antimicrobial resistance in bacteria by LC-MS/MS.
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Affiliation(s)
- JeongWoo Kang
- Veterinary Drugs & Biologics Division, Animal and Plant Quarantine Agency (QIA), 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do, 39660, Republic of Korea
- Department of Physiology, College of Veterinary Medicine, Kyungpook National University, Daegu, 702-701, Republic of Korea
| | - Md Akil Hossain
- Veterinary Drugs & Biologics Division, Animal and Plant Quarantine Agency (QIA), 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do, 39660, Republic of Korea
| | - Hae-Chul Park
- Veterinary Drugs & Biologics Division, Animal and Plant Quarantine Agency (QIA), 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do, 39660, Republic of Korea
| | - Yangho Jang
- Veterinary Drugs & Biologics Division, Animal and Plant Quarantine Agency (QIA), 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do, 39660, Republic of Korea
| | - Seonhwa Kim
- Veterinary Drugs & Biologics Division, Animal and Plant Quarantine Agency (QIA), 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do, 39660, Republic of Korea
| | - Jae Young Song
- Veterinary Drugs & Biologics Division, Animal and Plant Quarantine Agency (QIA), 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do, 39660, Republic of Korea
| | - Kwang-Jick Lee
- Veterinary Drugs & Biologics Division, Animal and Plant Quarantine Agency (QIA), 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do, 39660, Republic of Korea.
| | - Tae-Wan Kim
- Department of Physiology, College of Veterinary Medicine, Kyungpook National University, Daegu, 702-701, Republic of Korea.
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Duong S, Strobel N, Buddhadasa S, Stockham K, Auldist M, Wales B, Orbell J, Cran M. Rapid measurement of phytosterols in fortified food using gas chromatography with flame ionization detection. Food Chem 2016; 211:570-6. [PMID: 27283669 DOI: 10.1016/j.foodchem.2016.05.104] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 04/06/2016] [Accepted: 05/16/2016] [Indexed: 11/30/2022]
Abstract
A novel method for the measurement of total phytosterols in fortified food was developed and tested using gas chromatography with flame ionization detection. Unlike existing methods, this technique is capable of simultaneously extracting sterols during saponification thus significantly reducing extraction time and cost. The rapid method is suitable for sterol determination in a range of complex fortified foods including milk, cheese, fat spreads, oils and meat. The main enhancements of this new method include accuracy and precision, robustness, cost effectiveness and labour/time efficiencies. To achieve these advantages, quantification and the critical aspects of saponification were investigated and optimised. The final method demonstrated spiked recoveries in multiple matrices at 85-110% with a relative standard deviation of 1.9% and measurement uncertainty value of 10%.
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Affiliation(s)
- Samantha Duong
- Australian Government, National Measurement Institute (NMI), 1/153 Bertie Street, Port Melbourne, VIC 3207, Australia; Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia
| | - Norbert Strobel
- Australian Government, National Measurement Institute (NMI), 1/153 Bertie Street, Port Melbourne, VIC 3207, Australia
| | - Saman Buddhadasa
- Australian Government, National Measurement Institute (NMI), 1/153 Bertie Street, Port Melbourne, VIC 3207, Australia
| | - Katherine Stockham
- Australian Government, National Measurement Institute (NMI), 1/153 Bertie Street, Port Melbourne, VIC 3207, Australia
| | - Martin Auldist
- Department of Environment and Primary Industry (DEPI), 1301 Hazeldean Road, Ellinbank, VIC 3821, Australia
| | - Bill Wales
- Department of Environment and Primary Industry (DEPI), 1301 Hazeldean Road, Ellinbank, VIC 3821, Australia
| | - John Orbell
- Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia
| | - Marlene Cran
- Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia.
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Li L, Zhang CL, Jin L, Feng CJ. Rapid analysis of piperazine ferulate tablets by optic-fiber sensing technology and the similarity of ultraviolet spectra. J Pharm Anal 2012; 2:310-313. [PMID: 29403759 PMCID: PMC5760886 DOI: 10.1016/j.jpha.2012.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Accepted: 03/20/2012] [Indexed: 11/16/2022] Open
Abstract
A rapid analysis method of piperazine ferulate tablets by optic-fiber sensing technology with UV-vis absorption spectrum was established. Qualitative and quantitative data were obtained and compared by maximum and minimum wavelength, absorbance and contrast spectra. Similarity method was used to identify authenticity of drugs. The difference of contents measured by this method and UV determination method in China Pharmacopoeia showed no statistical significance (P>0.05), while the similarity can be used as a parameter to identify the authenticity of drugs.
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Affiliation(s)
- Li Li
- College of Pharmacy, Xinjiang Medical University, Urumqi 830011, China
| | - Chun-Ling Zhang
- College of Pharmacy, Xinjiang Medical University, Urumqi 830011, China
| | - Lu Jin
- College of Pharmacy, Xinjiang Medical University, Urumqi 830011, China
| | - Cui-Juan Feng
- College of Pharmacy, Xinjiang Medical University, Urumqi 830011, China
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