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Camargos CH, Poggi G, Chelazzi D, Baglioni P, Rezende CA. Strategies to mitigate the synergistic effects of moist-heat aging on TEMPO-oxidized nanocellulose. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.109943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Infrared spectroscopy for document dating - Advantages, challenges and limitations. TALANTA OPEN 2022. [DOI: 10.1016/j.talo.2022.100102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Sharma V, Kaur J, Kumar R. Proof of concept study for paper discrimination and age estimation through its degradation process by ATR-FTIR spectroscopy and chemometric models. AUST J FORENSIC SCI 2020. [DOI: 10.1080/00450618.2020.1781254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Vishal Sharma
- Institute of Forensic Science & Criminology, Panjab University, Chandigarh, India
| | - Jagdeep Kaur
- Institute of Forensic Science & Criminology, Panjab University, Chandigarh, India
| | - Raj Kumar
- Institute of Forensic Science & Criminology, Panjab University, Chandigarh, India
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Choi S, Cha S. Investigation of Reactions Between Isothiazolinones and Cysteamine by Reactive Paper Spray Ionization Mass Spectrometry (Reactive PSI MS). B KOREAN CHEM SOC 2019. [DOI: 10.1002/bkcs.11916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Soobin Choi
- Department of ChemistryHankuk University of Foreign Studies Yongin 17035 South Korea
| | - Sangwon Cha
- Department of ChemistryHankuk University of Foreign Studies Yongin 17035 South Korea
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Feider CL, Krieger A, DeHoog RJ, Eberlin LS. Ambient Ionization Mass Spectrometry: Recent Developments and Applications. Anal Chem 2019; 91:4266-4290. [PMID: 30790515 PMCID: PMC7444024 DOI: 10.1021/acs.analchem.9b00807] [Citation(s) in RCA: 249] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Clara L. Feider
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Anna Krieger
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Rachel J. DeHoog
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Livia S. Eberlin
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
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Silva CS, Pimentel MF, Amigo JM, García-Ruiz C, Ortega-Ojeda F. Chemometric approaches for document dating: Handling paper variability. Anal Chim Acta 2018; 1031:28-37. [PMID: 30119741 DOI: 10.1016/j.aca.2018.06.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 06/07/2018] [Accepted: 06/11/2018] [Indexed: 10/28/2022]
Abstract
A non-destructive methodology based on Fourier Transformed Infrared Spectroscopy (FTIR) is proposed in this research to estimate the age of documents of different ages. Due the variability in the samples caused by their different chemical compositions, chemometric approaches were proposed to build one unique regression model able to determine the age of the paper regardless of its composition. PLS models were built employing Generalized Least Squares Weighting (GLSW) and Orthogonal Least Squares (OLS) filters to reduce the variability of samples from the same year. Afterwards, sparse PLS, which is an extension of the PLS model including a variable selection step, was applied to compare its performance with the preprocessing filters. All techniques proposed were compared to the initial PLS models, showing the potential of the chemometric approaches applied to FTIR data to estimate the age of unknown documents.
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Affiliation(s)
- Carolina S Silva
- Department of Fundamental Chemistry, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, Brazil.
| | - Maria Fernanda Pimentel
- Department of Chemical Engineering, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, Brazil
| | - José Manuel Amigo
- Department of Chemical Engineering, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, Brazil; Department of Food Science, University of Copenhagen, Rolighedsvej 30, Frederiksberg C, Copenhagen, Denmark
| | - Carmen García-Ruiz
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University Institute of Research in Police Sciences (IUICP), University of Alcalá, Ctra. Madrid-Barcelona Km. 33.6, 28871, Alcalá de Henares, Madrid, Spain
| | - Fernando Ortega-Ojeda
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University Institute of Research in Police Sciences (IUICP), University of Alcalá, Ctra. Madrid-Barcelona Km. 33.6, 28871, Alcalá de Henares, Madrid, Spain
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Lara-Ortega FJ, Beneito-Cambra M, Robles-Molina J, García-Reyes JF, Gilbert-López B, Molina-Díaz A. Direct olive oil analysis by mass spectrometry: A comparison of different ambient ionization methods. Talanta 2018; 180:168-175. [DOI: 10.1016/j.talanta.2017.12.027] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 12/07/2017] [Accepted: 12/11/2017] [Indexed: 10/18/2022]
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Pushing the limits: Quantification of chromophores in real-world paper samples by GC-ECD and EI-GC-MS. Talanta 2018; 179:693-699. [PMID: 29310295 DOI: 10.1016/j.talanta.2017.11.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 11/18/2017] [Accepted: 11/20/2017] [Indexed: 11/22/2022]
Abstract
Widening the methodology of chromophore analysis in pulp and paper science, a sensitive gas-chromatographic approach with electron-capture detection is presented and applied to model samples and real-world historic paper material. Trifluoroacetic anhydride was used for derivatization of the chromophore target compounds. The derivative formation was confirmed by NMR and accurate mass analysis. The method successfully detects and quantifies hydroxyquinones which are key chromophores in cellulosic matrices. The analytical figures of merit appeared to be in an acceptable range with an LOD down to approx. 60ng/g for each key chromophore, which allows for their successful detection in historic sample material.
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