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Ren W, Sun M, Shi X, Wang T, Wang Y, Wang C, Li M. Progress of Mass Spectrometry-Based Lipidomics in the Dairy Field. Foods 2023; 12:foods12112098. [PMID: 37297344 DOI: 10.3390/foods12112098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/11/2023] [Accepted: 05/20/2023] [Indexed: 06/12/2023] Open
Abstract
Lipids play important biological roles, such as providing essential fatty acids and signaling. The wide variety and structural diversity of lipids, and the limited technical means to study them, have seriously hampered the resolution of the mechanisms of action of lipids. With advances in mass spectrometry (MS) and bioinformatic technologies, large amounts of lipids have been detected and analyzed quickly using MS-based lipidomic techniques. Milk lipids, as complex structural metabolites, play a crucial role in human health. In this review, the lipidomic techniques and their applications to dairy products, including compositional analysis, quality identification, authenticity identification, and origin identification, are discussed, with the aim of providing technical support for the development of dairy products.
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Affiliation(s)
- Wei Ren
- School of Agricultural Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Mengqi Sun
- School of Agricultural Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Xiaoyuan Shi
- School of Agricultural Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Tianqi Wang
- School of Agricultural Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Yonghui Wang
- School of Agricultural Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Changfa Wang
- School of Agricultural Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Mengmeng Li
- School of Agricultural Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
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2
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Sun CK, Tsai TH. Pharmacokinetic and pharmacodynamic herb-drug interactions of common over-the-counter pain medications. Biomed Chromatogr 2023:e5591. [PMID: 36710381 DOI: 10.1002/bmc.5591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 01/31/2023]
Abstract
Pain is one of the most common reasons for seeking medical intervention, and self-medication with over-the-counter medications and/or traditional herbal remedies has become increasingly popular. In this review, original articles on understanding possible herb-drug interactions between traditional herbs and four major pain medications-acetaminophen, aspirin, ibuprofen and naproxen-are compiled and analyzed. In terms of analytical methods, high-performance liquid chromatography using an isocratic eluent system coupled to biological sample clean-up is the most common, while a wide variety of detectors have been observed, including a photodiode array, variable wavelength detector, electrochemical detector and tandem mass spectrometer. Both synergistic and anti-synergistic effects were observed for acetaminophen and aspirin, while only synergistic effects have been found for naproxen. Currently, no interactions have been reported for ibuprofen.
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Affiliation(s)
- Chung-Kai Sun
- Institute of Traditional Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Tung-Hu Tsai
- Institute of Traditional Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan.,School of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
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3
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Fan CC, Liu YH, Lu CJ. Separation of C1–C15 Alkanes with a Disk-Shaped Aluminum Column Employing Mesoporous AAO as the Stationary Phase. Anal Chem 2022; 94:15570-15577. [DOI: 10.1021/acs.analchem.1c05479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chih-Chieh Fan
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Yi-Hsin Liu
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Chia-Jung Lu
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
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4
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Muhammad Alinafiah S, Azlan A, Amin I, Mahmud Ab Rashid NK. Review on retention of long-chain omega-3 polyunsaturated fatty acids (EPA and DHA) in fish as affected by cooking methods. INTERNATIONAL FOOD RESEARCH JOURNAL 2022. [DOI: 10.47836/ifrj.29.5.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Fatty acids are essential building blocks for the structural components of the cells, tissues, organs, and certain biologically active substances synthesis. Omega-3 polyunsaturated fatty acids are long-chain fatty acids essential for several biological functions including oxidative stress reduction and cardiovascular safety. Diet rich in omega-3 fatty acids is well acknowledged as beneficial to one's health and well-being. For the development of balanced diets, the nutrient content of raw and cooked foods is crucial. However, cooking method, animal age, and carcass characteristics might affect nutrient retention during cooking, and these factors are often unique to specific countries. This review thus provides a general overview of several cooking effects on long-chain omega-3 retention in fish. It can be concluded that the DHA and EPA's true retention values are correlated to the impact of different cooking treatments.
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5
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Lipskerov FA, Sheshukova EV, Komarova TV. Approaches to Formaldehyde Measurement: From Liquid Biological Samples to Cells and Organisms. Int J Mol Sci 2022; 23:6642. [PMID: 35743083 PMCID: PMC9224381 DOI: 10.3390/ijms23126642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/09/2022] [Accepted: 06/12/2022] [Indexed: 12/14/2022] Open
Abstract
Formaldehyde (FA) is the simplest aldehyde present both in the environment and in living organisms. FA is an extremely reactive compound capable of protein crosslinking and DNA damage. For a long time, FA was considered a "biochemical waste" and a by-product of normal cellular metabolism, but in recent decades the picture has changed. As a result, the need arose for novel instruments and approaches to monitor and measure not only environmental FA in water, cosmetics, and household products, but also in food, beverages and biological samples including cells and even organisms. Despite numerous protocols being developed for in vitro and in cellulo FA assessment, many of them have remained at the "proof-of-concept" stage. We analyze the suitability of different methods developed for non-biological objects, and present an overview of the recently developed approaches, including chemically-synthesized probes and genetically encoded FA-sensors for in cellulo and in vivo FA monitoring. We also discuss the prospects of classical methods such as chromatography and spectrophotometry, and how they have been adapted in response to the demand for precise, selective and highly sensitive evaluation of FA concentration fluctuations in biological samples. The main objectives of this review is to summarize data on the main approaches for FA content measurement in liquid biological samples, pointing out the advantages and disadvantages of each method; to report the progress in development of novel molecules suitable for application in living systems; and, finally, to discuss genetically encoded FA-sensors based on existing natural biological FA-responsive elements.
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Affiliation(s)
- Fedor A. Lipskerov
- Vavilov Institute of General Genetics Russian Academy of Sciences, 119991 Moscow, Russia; (F.A.L.); (E.V.S.)
- Chemistry Department, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Ekaterina V. Sheshukova
- Vavilov Institute of General Genetics Russian Academy of Sciences, 119991 Moscow, Russia; (F.A.L.); (E.V.S.)
| | - Tatiana V. Komarova
- Vavilov Institute of General Genetics Russian Academy of Sciences, 119991 Moscow, Russia; (F.A.L.); (E.V.S.)
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
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6
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Cagliero C, Bicchi C, Marengo A, Rubiolo P, Sgorbini B. Gas chromatography of essential oil: State-of-the-art, recent advances, and perspectives. J Sep Sci 2021; 45:94-112. [PMID: 34897986 DOI: 10.1002/jssc.202100681] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/02/2021] [Accepted: 10/03/2021] [Indexed: 11/10/2022]
Abstract
This review is an overview of the recent advances of gas chromatography in essential oil analysis; in particular, it focuses on both the new stationary phases and the advanced analytical methods and instrumentations. A paragraph is dedicated to ionic liquids as gas chromatography stationary phases, showing that, thanks to their peculiar selectivity, they can offer a complementary contribution to conventional stationary phases for the analysis of complex essential oils and the separation of critical pairs of components. Strategies to speed-up the analysis time, thus answering to the ever increasing request for routine essential oils quality control, are also discussed. Last but not least, a paragraph is dedicated to recent developments in column miniaturization in particular that based on microelectromechanical-system technology in a perspective of developing micro-gas chromatographic systems to optimize the energy consumption as well as the instrumentation dimensions. A number of applications in the essential oil field is also included.
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Affiliation(s)
- Cecilia Cagliero
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Torino, Italy
| | - Carlo Bicchi
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Torino, Italy
| | - Arianna Marengo
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Torino, Italy
| | - Patrizia Rubiolo
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Torino, Italy
| | - Barbara Sgorbini
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Torino, Italy
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7
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Ayhan K, Coşansu S, Orhan-Yanıkan E, Gülseren G. Advance methods for the qualitative and quantitative determination of microorganisms. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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8
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Cao J, Chen Q, Wang X, Zhang Q, Yu HD, Huang X, Huang W. Recent Development of Gas Sensing Platforms Based on 2D Atomic Crystals. RESEARCH (WASHINGTON, D.C.) 2021; 2021:9863038. [PMID: 33982003 PMCID: PMC8086560 DOI: 10.34133/2021/9863038] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 03/22/2021] [Indexed: 11/24/2022]
Abstract
Sensors, capable of detecting trace amounts of gas molecules or volatile organic compounds (VOCs), are in great demand for environmental monitoring, food safety, health diagnostics, and national defense. In the era of the Internet of Things (IoT) and big data, the requirements on gas sensors, in addition to sensitivity and selectivity, have been increasingly placed on sensor simplicity, room temperature operation, ease for integration, and flexibility. The key to meet these requirements is the development of high-performance gas sensing materials. Two-dimensional (2D) atomic crystals, emerged after graphene, have demonstrated a number of attractive properties that are beneficial to gas sensing, such as the versatile and tunable electronic/optoelectronic properties of metal chalcogenides (MCs), the rich surface chemistry and good conductivity of MXenes, and the anisotropic structural and electronic properties of black phosphorus (BP). While most gas sensors based on 2D atomic crystals have been incorporated in the setup of a chemiresistor, field-effect transistor (FET), quartz crystal microbalance (QCM), or optical fiber, their working principles that involve gas adsorption, charge transfer, surface reaction, mass loading, and/or change of the refractive index vary from material to material. Understanding the gas-solid interaction and the subsequent signal transduction pathways is essential not only for improving the performance of existing sensing materials but also for searching new and advanced ones. In this review, we aim to provide an overview of the recent development of gas sensors based on various 2D atomic crystals from both the experimental and theoretical investigations. We will particularly focus on the sensing mechanisms and working principles of the related sensors, as well as approaches to enhance their sensing performances. Finally, we summarize the whole article and provide future perspectives for the development of gas sensors with 2D materials.
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Affiliation(s)
- Jiacheng Cao
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Qian Chen
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Xiaoshan Wang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Qiang Zhang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Hai-Dong Yu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211800, China
| | - Xiao Huang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211800, China
| | - Wei Huang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211800, China
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9
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Huangfu MG, Zhang Y, Zhang XL, Liu JG, Liu YC, Guo YD, Huang QY, Zhang XM. Preparation and Thermal Evaluation of Novel Polyimide Protective Coatings for Quartz Capillary Chromatographic Columns Operated over 320 °C for High-Temperature Gas Chromatography Analysis. Polymers (Basel) 2019; 11:polym11060946. [PMID: 31159362 PMCID: PMC6630507 DOI: 10.3390/polym11060946] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 05/16/2019] [Accepted: 05/17/2019] [Indexed: 02/05/2023] Open
Abstract
Protection of intrinsically brittle quartz chromatographic columns (CCs) from breakage or property deterioration in gas chromatography (GC) analysis has become an important research topic regarding high-temperature GC techniques. Polyimide (PI) has proved to be the most suitable protective coating for quartz CCs. In the current research, a series of novel high-temperature-resistant PI coatings for quartz CCs operated over 320 °C have been successfully prepared. For this purpose, the aromatic diamine with a rigid skeleton structure 2-(4-aminophenyl)-5-aminobenzimidazole (APBI) was copolymerized with two aromatic dianhydrides—3,3’,4,4’-benzophenotetracarboxylic acid dianhydride (BTDA) and 4,4’-oxydiphthalic anhydride (ODPA)—and an aromatic diamine with flexible ether linkages—4,4’-oxydianiline (ODA)—by a two-step polymerization procedure via soluble poly(amic acid) (PAA) precursors, followed by thermal imidization at elevated temperatures. The developed PI coatings exhibited good comprehensive properties, including glass transition temperatures (Tg) as high as 346.9 °C, measured by dynamic mechanical analysis (DMA), and coefficients of linear thermal expansion (CTEs) as low as 24.6 × 10−6/K in the range of 50–300 °C. In addition, the PI coatings exhibited good adhesion to the fused quartz capillary columns. No cracking, delamination, warpage, or other failures occurred during the 100-cycle thermal shock test in the range of 25–320 °C.
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Affiliation(s)
- Meng-Ge Huangfu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.
| | - Yan Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.
| | - Xin-Ling Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.
| | - Jin-Gang Liu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.
| | - Ying-Cong Liu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.
| | - Yi-Dan Guo
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.
| | - Qing-Yuan Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.
| | - Xiu-Min Zhang
- School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China.
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10
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NAKAGAMI K, SUMIYA O, TAZAWA T, MONOBE T, WATANABE M, UETA I, SAITO Y. Polyimide Filaments as a Novel Stationary Phase in Packed-Capillary Gas Chromatography. CHROMATOGRAPHY 2018. [DOI: 10.15583/jpchrom.2018.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Koki NAKAGAMI
- Department of Environmental and Life Sciences, Toyohashi University of Technology
| | - Ohjiro SUMIYA
- Department of Environmental and Life Sciences, Toyohashi University of Technology
| | - Toshiaki TAZAWA
- Department of Environmental and Life Sciences, Toyohashi University of Technology
| | - Tomoya MONOBE
- Department of Environmental and Life Sciences, Toyohashi University of Technology
| | - Mitsuru WATANABE
- Department of Environmental and Life Sciences, Toyohashi University of Technology
| | - Ikuo UETA
- Department of Applied Chemistry, University of Yamanashi
| | - Yoshihiro SAITO
- Department of Environmental and Life Sciences, Toyohashi University of Technology
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11
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Du Z, Tsow F, Wang D, Tao N. Real-time Simutaneous Separation and Detection of Chemicals using Integrated Micro Column and Surface Plasmon Resonance Imaging Micro-GC. IEEE SENSORS JOURNAL 2018; 18:1351-1357. [PMID: 30220886 PMCID: PMC6136449 DOI: 10.1109/jsen.2017.2783892] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
An integrated and miniaturized Micro-Gas Chromatography with real-time imaging capability for simultaneous chemical separation and detection was developed. Surface Plasmon Resonance imaging (SPRi) was used as a sensitive and real-time imaging based detector for various gaseous chemical mixtures and good gas chromatographs were obtained. The system integrated a home-made miniaturized molecular sieve packed spiral micro-channel column with the SPRi imaging chip and real-time chemical separation and detection were demonstrated using alkanes. The chemical separation processes were simulated using COMSOL and matched well with experimental results. The system enabled the study of chemical separation processes in real-time by miniaturizing and integrating the Micro-GC separation and detection units. This approach can be expanded to multidimensional GC development.
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Affiliation(s)
- Zijian Du
- School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ 85287-5801 USA
| | - Francis Tsow
- Biodesign Institute, Arizona State University, Tempe, AZ 85287-5801 USA
| | - Di Wang
- Biodesign Institute, Arizona State University, Tempe, AZ 85287-5801 USA
| | - Nongjian Tao
- School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ 85287-5801 USA
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12
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Review of recent developments in determining volatile organic compounds in exhaled breath as biomarkers for lung cancer diagnosis. Anal Chim Acta 2017; 996:1-9. [DOI: 10.1016/j.aca.2017.09.021] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 09/08/2017] [Accepted: 09/09/2017] [Indexed: 12/20/2022]
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13
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Johnson DW. Applications of Mass Spectrometric Techniques to the Analysis of Fuels and Lubricants. Mass Spectrom (Tokyo) 2017. [DOI: 10.5772/intechopen.68592] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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14
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Venkatasubramanian A, Sauer VTK, Roy SK, Xia M, Wishart DS, Hiebert WK. Nano-Optomechanical Systems for Gas Chromatography. NANO LETTERS 2016; 16:6975-6981. [PMID: 27749074 DOI: 10.1021/acs.nanolett.6b03066] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Microgas chromatography (GC) is promising for portable chemical analysis. We demonstrate a nano-optomechanical system (NOMS) as an ultrasensitive mass detector in gas chromatography. Bare, native oxide, silicon surfaces are sensitive enough to monitor volatile organic compounds at ppm levels, while simultaneously demonstrating chemical selectivity. The NOMS is able to sense GC peaks from derivatized metabolites at physiological concentrations. This is an important milestone for small-molecule quantitation assays in next generation metabolite analyses for applications such as disease diagnosis and personalized medicine. The optical microring, which plays an important role in the nanomechanical signal transduction mechanism, can also be used as an analyte concentration sensor. Different adsorption kinetics regimes are realized at different temperatures allowing temporary condensation of the analyte onto the sensor surfaces. This effect amplifies the signal, resulting in a 1 ppb level limit of detection, without partition enhancement from absorbing media. This sensitivity bodes well for NOMS as universal, ultrasensitive detectors in micro-GC, breath analysis, and other chemical-sensing applications.
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Affiliation(s)
- Anandram Venkatasubramanian
- National Institute for Nanotechnology , Edmonton, Alberta T6G 2M9, Canada
- Department of Biological Sciences, University of Alberta , Edmonton, Alberta T6G 2E9, Canada
| | - Vincent T K Sauer
- National Institute for Nanotechnology , Edmonton, Alberta T6G 2M9, Canada
- Department of Biological Sciences, University of Alberta , Edmonton, Alberta T6G 2E9, Canada
| | - Swapan K Roy
- National Institute for Nanotechnology , Edmonton, Alberta T6G 2M9, Canada
- Department of Physics, University of Alberta , Edmonton, Alberta T6G 2E1, Canada
| | - Mike Xia
- National Institute for Nanotechnology , Edmonton, Alberta T6G 2M9, Canada
| | - David S Wishart
- National Institute for Nanotechnology , Edmonton, Alberta T6G 2M9, Canada
- Department of Biological Sciences, University of Alberta , Edmonton, Alberta T6G 2E9, Canada
- Department of Computing Science, University of Alberta , Edmonton, Alberta T6G 2E8, Canada
| | - Wayne K Hiebert
- National Institute for Nanotechnology , Edmonton, Alberta T6G 2M9, Canada
- Department of Physics, University of Alberta , Edmonton, Alberta T6G 2E1, Canada
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15
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Gröger T, Gruber B, Harrison D, Saraji-Bozorgzad M, Mthembu M, Sutherland A, Zimmermann R. A Vacuum Ultraviolet Absorption Array Spectrometer as a Selective Detector for Comprehensive Two-Dimensional Gas Chromatography: Concept and First Results. Anal Chem 2016; 88:3031-9. [DOI: 10.1021/acs.analchem.5b02472] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Thomas Gröger
- Joint
Mass Spectrometry Centre,
Cooperation Group Comprehensive Molecular Analytics, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
- Joint
Mass Spectrometry Centre, Chair of Analytical Chemistry, University of Rostock, Dr. Lorenz Weg 1, 18051 Rostock, Germany
| | - Beate Gruber
- Joint
Mass Spectrometry Centre,
Cooperation Group Comprehensive Molecular Analytics, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
- Joint
Mass Spectrometry Centre, Chair of Analytical Chemistry, University of Rostock, Dr. Lorenz Weg 1, 18051 Rostock, Germany
| | - Dale Harrison
- VUV Analytics, Inc., Austin, Texas 78717, United States
| | | | - Makhosazana Mthembu
- Joint
Mass Spectrometry Centre, Chair of Analytical Chemistry, University of Rostock, Dr. Lorenz Weg 1, 18051 Rostock, Germany
| | - Aimée Sutherland
- Joint
Mass Spectrometry Centre,
Cooperation Group Comprehensive Molecular Analytics, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
- Joint
Mass Spectrometry Centre, Chair of Analytical Chemistry, University of Rostock, Dr. Lorenz Weg 1, 18051 Rostock, Germany
| | - Ralf Zimmermann
- Joint
Mass Spectrometry Centre,
Cooperation Group Comprehensive Molecular Analytics, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
- Joint
Mass Spectrometry Centre, Chair of Analytical Chemistry, University of Rostock, Dr. Lorenz Weg 1, 18051 Rostock, Germany
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16
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Im J, Sterner ES, Swager TM. Integrated Gas Sensing System of SWCNT and Cellulose Polymer Concentrator for Benzene, Toluene, and Xylenes. SENSORS 2016; 16:183. [PMID: 26848660 PMCID: PMC4801560 DOI: 10.3390/s16020183] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 01/23/2016] [Accepted: 01/25/2016] [Indexed: 11/16/2022]
Abstract
An integrated cellulose polymer concentrator/single-walled carbon nanotube (SWCNT) sensing system is demonstrated to detect benzene, toluene, and xylenes (BTX) vapors. The sensing system consists of functionalized cellulose as a selective concentrator disposed directly on top of a conductive SWCNT sensing layer. Functionalized cellulose concentrator (top layer) selectively adsorbs the target analyte and delivers the concentrated analyte as near as possible to the SWCNT sensing layer (bottom layer), which enables the simultaneous concentrating and sensing within a few seconds. The selectivity can be achieved by functionalizing cellulose acetate with a pentafluorophenylacetyl selector that interacts strongly with the target BTX analytes. A new design of the integrated cellulose concentrator/SWCNT sensing system allows high sensitivity with limits of detection for benzene, toluene, and m-xylene vapors of 55 ppm, 19 ppm, and 14 ppm, respectively, selectivity, and fast responses (<10 s to reach equilibrium), exhibiting the potential ability for on-site, real-time sensing applications. The sensing mechanism involves the selective adsorption of analytes in the concentrator film, which in turn mediates changes in the electronic potentials at the polymer-SWCNT interface and potentially changes in the tunneling barriers between nanotubes.
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Affiliation(s)
- Jisun Im
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
| | - Elizabeth S Sterner
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
| | - Timothy M Swager
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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Preparation and characterization - including in situ Small Angle X-Ray Scattering - of gas chromatographic capillary columns with mesoporous silica thin films as stationary phases. J Chromatogr A 2015; 1413:85-93. [PMID: 26319377 DOI: 10.1016/j.chroma.2015.07.081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 07/20/2015] [Accepted: 07/21/2015] [Indexed: 10/23/2022]
Abstract
In this study the preparation of various mesoporous silica thin films as new stationary phases for gas chromatography (GC) columns is presented. The synthesis was performed inside capillaries via a sol-gel process using a templating route. The as-obtained columns were found to be highly efficient for the fast separation of light n-alkanes (C1-C5) mixture; these columns exhibiting a normalized retention 30 times higher than that of a commercially available silica column used as standard. A particular effort was directed towards the characterization of the stationary phase physical features: thin film inspection by Scanning Electron Microscopy and, for the first time to our knowledge, in situ SAXS characterization using synchrotron radiation were used to study the impact of the pore-network structuration on the GC properties. Worm-like, cubic and hexagonal phases were observed for specific preparation conditions. Unexpectedly, the normalized retention relative to film thickness appeared higher with disordering of the pores network.
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18
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Cai Z, Smith NL, Zhang JT, Asher SA. Two-dimensional photonic crystal chemical and biomolecular sensors. Anal Chem 2015; 87:5013-25. [PMID: 25867803 DOI: 10.1021/ac504679n] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We review recent progress in the development of two-dimensional (2-D) photonic crystal (PC) materials for chemical and biological sensing applications. Self-assembly methods were developed in our laboratory to fabricate 2-D particle array monolayers on mercury and water surfaces. These hexagonal arrays strongly forward Bragg diffract light to report on their array spacings. By embedding these 2-D arrays onto responsive hydrogel surfaces, 2-D PC sensing materials can be fabricated. The 2-D PC sensors utilize responsive polymer hydrogels that are chemically functionalized to show volume phase transitions in selective response to particular chemical species. Novel hydrogels were also developed in our laboratory by cross-linking proteins while preserving their native structures to maintain their selective binding affinities. The volume phase transitions swell or shrink the hydrogels, which alter their 2-D array spacings, and shift their diffraction wavelengths. These shifts can be visually detected or spectrally measured. These 2-D PC sensing materials have been used for the detection of many analytes, such as pH, surfactants, metal ions, proteins, anionic drugs, and ammonia. We are exploring the use of organogels that use low vapor pressure ionic liquids as their mobile phases for sensing atmospheric analytes.
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Affiliation(s)
- Zhongyu Cai
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Natasha L Smith
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Jian-Tao Zhang
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Sanford A Asher
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
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Akbar M, Shakeel H, Agah M. GC-on-chip: integrated column and photoionization detector. LAB ON A CHIP 2015; 15:1748-1758. [PMID: 25673367 DOI: 10.1039/c4lc01461h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This paper reports a unique GC-on-chip module comprising a monolithically integrated semi-packed micro separation column (μSC) and a highly sensitive micro helium discharge photoionization detector (μDPID). While semi-packed μSC with atomic layer deposited (ALD) alumina as a stationary phase provides high separation performance, the μDPID implemented for the first time in a silicon-glass architecture inherits the desirable features of being universal, non-destructive, low power consumption (1.4 mW), and responsive. The integrated chip is 1.5 cm × 3 cm in size and requires a two-mask fabrication process. Monolithic integration alleviates the need for transfer lines between the column and the detector which improves the performance of the individual components with overall reduced fabrication and implementation costs. The chip is capable of operating under the isothermal as well as temperature and flow programming conditions to achieve rapid chromatographic analysis. The chip performance was investigated with two samples: 1) a multi-analyte gas mixture consisting of eight compounds ranging from 98 °C to 174 °C in boiling point and 2) a mixture containing higher alkanes (C9-C12). Our experiments indicate that the chip is capable of providing rapid chromatographic separation and detection of these compounds (<1 min) through the optimization of flow and temperature programming conditions. The GC-on-chip demonstrated a minimum detection limit of ~10 pg which is on a par with the widely used destructive flame ionization detector (FID).
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Affiliation(s)
- M Akbar
- VT MEMS Lab, Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA.
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20
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Liu C, Zhang X, Li L, Cui J, Shi YE, Wang L, Zhan J. Silver nanoparticle aggregates on metal fibers for solid phase microextraction–surface enhanced Raman spectroscopy detection of polycyclic aromatic hydrocarbons. Analyst 2015; 140:4668-75. [DOI: 10.1039/c5an00590f] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silver–copper fibers loaded with silver nanoparticles are used for SPME–SERS detection of polycyclic aromatic hydrocarbons, which can be further confirmed by GC-MS.
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Affiliation(s)
- Cuicui Liu
- National Engineering Research Center for Colloidal Materials and Key Laboratory for Colloid & Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan Shandong
- P. R. China
| | - Xiaoli Zhang
- National Engineering Research Center for Colloidal Materials and Key Laboratory for Colloid & Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan Shandong
- P. R. China
| | - Limei Li
- Department of Physics
- Xiamen University
- Xiamen Fujian
- P. R. China
| | - Jingcheng Cui
- National Engineering Research Center for Colloidal Materials and Key Laboratory for Colloid & Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan Shandong
- P. R. China
| | - Yu-e Shi
- National Engineering Research Center for Colloidal Materials and Key Laboratory for Colloid & Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan Shandong
- P. R. China
| | - Le Wang
- Center of Technology
- Jinan Entry-Exit Inspection and Quarantine Bureau
- Jinan 250014
- China
| | - Jinhua Zhan
- National Engineering Research Center for Colloidal Materials and Key Laboratory for Colloid & Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan Shandong
- P. R. China
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21
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Wang A, Hynynen S, Hawkins AR, Tolley SE, Tolley HD, Lee ML. Axial thermal gradients in microchip gas chromatography. J Chromatogr A 2014; 1374:216-223. [PMID: 25476685 DOI: 10.1016/j.chroma.2014.11.035] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 11/12/2014] [Accepted: 11/13/2014] [Indexed: 11/25/2022]
Abstract
Fabrication technologies for microelectromechanical systems (MEMS) allow miniaturization of conventional benchtop gas chromatography (GC) to portable, palm-sized microfabricated GC (μGC) devices, which are suitable for on-site chemical analysis and remote sensing. The separation performance of μGC systems, however, has not been on par with conventional GC. Column efficiency, peak symmetry and resolution are often compromised by column defects and non-ideal injections. The relatively low performance of μGC devices has impeded their further commercialization and broader application. In this work, the separation performance of μGC columns was improved by incorporating thermal gradient gas chromatography (TGGC). The analysis time was ∼20% shorter for TGGC separations compared to conventional temperature-programmed GC (TPGC) when a wide sample band was introduced into the column. Up to 50% reduction in peak tailing was observed for polar analytes, which improved their resolution. The signal-to-noise ratios (S/N) of late-eluting peaks were increased by 3-4 fold. The unique focusing effect of TGGC overcomes many of the previous shortcomings inherent in μGC analyses.
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Affiliation(s)
- Anzi Wang
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, United States
| | - Sampo Hynynen
- Department of Electrical and Computer Engineering, Brigham Young University, Provo, UT 84602, United States
| | - Aaron R Hawkins
- Department of Electrical and Computer Engineering, Brigham Young University, Provo, UT 84602, United States
| | - Samuel E Tolley
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, United States; Department of Statistics, Brigham Young University, Provo, UT 84602, United States
| | - H Dennis Tolley
- Department of Statistics, Brigham Young University, Provo, UT 84602, United States
| | - Milton L Lee
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, United States.
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22
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Liaud C, Nguyen N, Nasreddine R, Le Calvé S. Experimental performances study of a transportable GC-PID and two thermo-desorption based methods coupled to FID and MS detection to assess BTEX exposure at sub-ppb level in air. Talanta 2014; 127:33-42. [DOI: 10.1016/j.talanta.2014.04.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/28/2014] [Accepted: 04/01/2014] [Indexed: 12/07/2022]
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23
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Štěpánová S, Kašička V. Determination of impurities and counterions of pharmaceuticals by capillary electromigration methods. J Sep Sci 2014; 37:2039-55. [DOI: 10.1002/jssc.201400266] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 04/24/2014] [Accepted: 05/01/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Sille Štěpánová
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic; Prague Czech Republic
| | - Václav Kašička
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic; Prague Czech Republic
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24
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Hexana W, De Coning P, Jali S, Van der Westhuizen R, Brack B, van Houwelingen A, Nel R. Comprehensive two-dimensional GC for the analysis of low-molecular-weight oxygenates in three different matrices from a petrochemical pilot plant using a single calibration. J Sep Sci 2014; 37:566-72. [DOI: 10.1002/jssc.201301032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 12/13/2013] [Accepted: 12/15/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Wonga Hexana
- Analytical Science Group; Analytical Solutions Department; Research & Development; Sasol Technology (Pty) Ltd; Sasolburg South Africa
| | - Piet De Coning
- Analytical Science Group; Analytical Solutions Department; Research & Development; Sasol Technology (Pty) Ltd; Sasolburg South Africa
| | - Samuel Jali
- Analytical Science Group; Analytical Solutions Department; Research & Development; Sasol Technology (Pty) Ltd; Sasolburg South Africa
| | - Rina Van der Westhuizen
- Analytical Science Group; Analytical Solutions Department; Research & Development; Sasol Technology (Pty) Ltd; Sasolburg South Africa
| | - Bryan Brack
- Refinery Technologies Department; Research & Development; Sasol Technology (Pty) Ltd; Sasolburg South Africa
| | - Arjan van Houwelingen
- Refinery Technologies Department; Research & Development; Sasol Technology (Pty) Ltd; Sasolburg South Africa
| | - Reinier Nel
- Fuels Technology; Sasol Technology (Pty) Ltd; Sasolburg South Africa
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25
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Jian RS, Huang YS, Lai SL, Sung LY, Lu CJ. Compact instrumentation of a μ-GC for real time analysis of sub-ppb VOC mixtures. Microchem J 2013. [DOI: 10.1016/j.microc.2012.10.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Tang B, Row KH. Development of gas chromatography analysis of fatty acids in marine organisms. J Chromatogr Sci 2013; 51:599-607. [PMID: 23377649 DOI: 10.1093/chromsci/bmt005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The gas chromatographic analysis of fatty acids has attracted considerable interest. In this analysis, the common derivatives of fatty acids, such as fatty acid methyl esters, can be detected using a flame ionization detector and the mass spectra can indicate the true structure of fatty acids. This paper reviews gas chromatographic methods for obtaining fatty acids from marine organisms. The stationary phase and detector for applications in gas chromatography are discussed. This article also reviews the components of fatty acids in marine animals, marine plants and marine microorganisms.
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Affiliation(s)
- Baokun Tang
- Department of Chemical Engineering, Inha University, Incheon 402-751, Korea
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27
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Abstract
An algorithm, referred to as targeted mass spectral ratio analysis (TMSRA) is presented whereby the ratios between intensities as a function of mass channel (m/z) of a target analyte mass spectrum are used to automatically determine which m/z are sufficiently pure to quantify the analyte in a sample gas chromatogram. The standard perfluorotributylamine (PFTBA) was used to evaluate the reproducibility of the collected mass spectra, which aided in selecting a mass spectral threshold for TMSRA application to a subsequent case study. Results with PFTBA suggested that a threshold of all m/z at or above 1% of the highest recorded m/z intensity should be included for targeted analysis. For the case study, 1-heptene was selected as the target analyte and n-heptane was selected as the interfering compound. These two compounds were chosen since their mass spectra are very similar. Chromatographic data containing a pure peak for these analytes were extracted, and mathematically added at various temporal offsets to generate various degrees of chromatographic resolution, R(s), for the purpose of evaluating algorithm performance, and indeed, TMSRA successfully quantified 1-heptene. At the higher R(s) studied (0.6 ≤ R(s) ≤ 1.5) a deviation within ± 1% and a RSD generally below 1% were achieved for 1-heptene quantification. As the R(s) decreased, the deviation and RSD both increased. At a R(s)=0, a deviation of ≈ 9% and a RSD of ≈ 9% were achieved.
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28
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Supercritical fluid chromatography hyphenated to bidimensional gas chromatography in comprehensive and heart-cutting mode: Design of the instrumentation. J Chromatogr A 2012; 1255:153-62. [DOI: 10.1016/j.chroma.2012.03.075] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2012] [Revised: 03/22/2012] [Accepted: 03/23/2012] [Indexed: 11/17/2022]
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Reddy K, Guo Y, Liu J, Lee W, Oo MKK, Fan X. Rapid, sensitive, and multiplexed on-chip optical sensors for micro-gas chromatography. LAB ON A CHIP 2012; 12:901-905. [PMID: 22245960 DOI: 10.1039/c2lc20922e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We developed and characterized a rapid, sensitive and integrated optical vapor sensor array for micro-gas chromatography (μGC) applications. The sensor is based on the Fabry-Pérot (FP) interferometer formed by a micrometre-thin vapor-sensitive polymer layer coated on a silicon wafer. The thickness and the refractive index of the polymer vary in response to the vapor analyte, resulting in a change in the reflected intensity of the laser impinged on the sensor. In our study, four different polymers were coated on four wells pre-etched on a silicon wafer to form a spatially separated sensor array. A CMOS imager was employed to simultaneously monitor the polymers' response, thus enabling multiplexed detection of a vapor analyte passing through the GC column. A sub-second detection time was demonstrated. In addition, a sub-picogram detection limit was achieved, representing orders of magnitude improvement over the on-chip vapor sensors previously reported.
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Affiliation(s)
- Karthik Reddy
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
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31
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Petersen MA, Grade H. Analysis of Steam Assisted Gravity Drainage Produced Water using Two-Dimensional Gas Chromatography with Time-of-Flight Mass Spectrometry. Ind Eng Chem Res 2011. [DOI: 10.1021/ie200531h] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Matthew A. Petersen
- GE Global Research Center, General Electric Company, 1 Research Circle, Niskayuna, New York 12309, United States
| | - Hans Grade
- GE Global Research Center, General Electric Company, 1 Research Circle, Niskayuna, New York 12309, United States
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Arsene C, Vione D, Grinberg N, Olariu RI. GC × GC-MS HYPHENATED TECHNIQUES FOR THE ANALYSIS OF VOLATILE ORGANIC COMPOUNDS IN AIR. J LIQ CHROMATOGR R T 2011. [DOI: 10.1080/10826076.2011.587749] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Cecilia Arsene
- a Faculty of Chemistry, Laboratory of Analytical Chemistry, “Al. I. Cuza” University of Iasi , Iasi, Romania
| | - Davide Vione
- b Dipartimento di Chimica Analitica , Università di Torino , Torino, Italy
- c Centro Interdipartimentale NatRisk, Università di Torino , Grugliasco (TO), Italy
| | - Nelu Grinberg
- d Boehringer Ingelheim Pharmaceuticals Inc. , Ridgefield, Connecticut, USA
| | - Romeo Iulian Olariu
- a Faculty of Chemistry, Laboratory of Analytical Chemistry, “Al. I. Cuza” University of Iasi , Iasi, Romania
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A monolithically-integrated μGC chemical sensor system. SENSORS 2011; 11:6517-32. [PMID: 22163970 PMCID: PMC3231687 DOI: 10.3390/s110706517] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 06/03/2011] [Accepted: 06/20/2011] [Indexed: 11/17/2022]
Abstract
Gas chromatography (GC) is used for organic and inorganic gas detection with a range of applications including screening for chemical warfare agents (CWA), breath analysis for diagnostics or law enforcement purposes, and air pollutants/indoor air quality monitoring of homes and commercial buildings. A field-portable, light weight, low power, rapid response, micro-gas chromatography (μGC) system is essential for such applications. We describe the design, fabrication and packaging of μGC on monolithically-integrated Si dies, comprised of a preconcentrator (PC), μGC column, detector and coatings for each of these components. An important feature of our system is that the same mechanical micro resonator design is used for the PC and detector. We demonstrate system performance by detecting four different CWA simulants within 2 min. We present theoretical analyses for cost/power comparisons of monolithic versus hybrid μGC systems. We discuss thermal isolation in monolithic systems to improve overall performance. Our monolithically-integrated μGC, relative to its hybrid cousin, will afford equal or slightly lower cost, a footprint that is 1/2 to 1/3 the size and an improved resolution of 4 to 25%.
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Kim S, Koo I, Fang A, Zhang X. Smith-Waterman peak alignment for comprehensive two-dimensional gas chromatography-mass spectrometry. BMC Bioinformatics 2011; 12:235. [PMID: 21676240 PMCID: PMC3133553 DOI: 10.1186/1471-2105-12-235] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Accepted: 06/15/2011] [Indexed: 11/30/2022] Open
Abstract
Background Comprehensive two-dimensional gas chromatography coupled with mass spectrometry (GC × GC-MS) is a powerful technique which has gained increasing attention over the last two decades. The GC × GC-MS provides much increased separation capacity, chemical selectivity and sensitivity for complex sample analysis and brings more accurate information about compound retention times and mass spectra. Despite these advantages, the retention times of the resolved peaks on the two-dimensional gas chromatographic columns are always shifted due to experimental variations, introducing difficulty in the data processing for metabolomics analysis. Therefore, the retention time variation must be adjusted in order to compare multiple metabolic profiles obtained from different conditions. Results We developed novel peak alignment algorithms for both homogeneous (acquired under the identical experimental conditions) and heterogeneous (acquired under the different experimental conditions) GC × GC-MS data using modified Smith-Waterman local alignment algorithms along with mass spectral similarity. Compared with literature reported algorithms, the proposed algorithms eliminated the detection of landmark peaks and the usage of retention time transformation. Furthermore, an automated peak alignment software package was established by implementing a likelihood function for optimal peak alignment. Conclusions The proposed Smith-Waterman local alignment-based algorithms are capable of aligning both the homogeneous and heterogeneous data of multiple GC × GC-MS experiments without the transformation of retention times and the selection of landmark peaks. An optimal version of the SW-based algorithms was also established based on the associated likelihood function for the automatic peak alignment. The proposed alignment algorithms outperform the literature reported alignment method by analyzing the experiment data of a mixture of compound standards and a metabolite extract of mouse plasma with spiked-in compound standards.
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Affiliation(s)
- Seongho Kim
- Department of Bioinformatics and Biostatistics, University of Louisville, Louisville, KY 40292, USA.
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35
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Nadeau JS, Wilson RB, Fitz BD, Reed JT, Synovec RE. Utilizing a constant peak width transform for isothermal gas chromatography. J Chromatogr A 2011; 1218:3718-24. [DOI: 10.1016/j.chroma.2011.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 01/24/2011] [Accepted: 04/01/2011] [Indexed: 10/18/2022]
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36
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GUAN Y, WU D, DUAN C. Advances in miniaturization of chromatograph and detectors. Se Pu 2011; 29:193-8. [DOI: 10.3724/sp.j.1123.2011.00193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Affiliation(s)
- Ana Ballesteros-Gómez
- Department of Analytical Chemistry, Edificio Anexo Marie Curie, Campus de Rabanales, 14071 Córdoba, Spain
| | - Soledad Rubio
- Department of Analytical Chemistry, Edificio Anexo Marie Curie, Campus de Rabanales, 14071 Córdoba, Spain
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