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Brodfuehrer SH, Blomdahl DC, Wahman DG, Speitel GE, Misztal PK, Katz LE. Simultaneous time-resolved inorganic haloamine measurements enable analysis of disinfectant degradation kinetics and by-product formation. NATURE WATER 2024; 2:434-442. [PMID: 38993391 PMCID: PMC11235187 DOI: 10.1038/s44221-024-00227-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 03/07/2024] [Indexed: 07/13/2024]
Abstract
We demonstrate the application of proton transfer time-of-flight mass spectrometry (PTR-TOF-MS) in monitoring the kinetics of disinfectant decay in water with a sensitivity one to three orders of magnitude greater than other analytical methods. Chemical disinfection inactivates pathogens during water treatment and prevents regrowth as water is conveyed in distribution system pipes, but it also causes formation of toxic disinfection by-products. Analytical limits have hindered kinetic models, which aid in ensuring water quality and protecting public health by predicting disinfection by-products formation. PTR-TOF-MS, designed for measuring gas phase concentrations of organic compounds, was able to simultaneously monitor aqueous concentrations of five inorganic haloamines relevant to chloramine disinfection under drinking water relevant concentrations. This novel application to aqueous analytes opens a new range of applications for PTR-TOF-MS.
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Affiliation(s)
- Samuel H Brodfuehrer
- Maseeh Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, Austin, TX, USA
- These authors contributed equally: Samuel H. Brodfuehrer, Daniel C. Blomdahl
| | - Daniel C Blomdahl
- Maseeh Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, Austin, TX, USA
- These authors contributed equally: Samuel H. Brodfuehrer, Daniel C. Blomdahl
| | - David G Wahman
- Office of Research and Development, United States Environmental Protection Agency, Cincinnati, OH, USA
| | - Gerald E Speitel
- Maseeh Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, Austin, TX, USA
| | - Pawel K Misztal
- Maseeh Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, Austin, TX, USA
| | - Lynn E Katz
- Maseeh Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, Austin, TX, USA
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2
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Sánchez R, Sanahuja AB, Lauría LPM, Todolí JL, Jordá JMM. Evaluation of highly adsorptive Guefoams (multifunctional guest-containing foams) as a potential sorbent for determination of volatile organic compounds (VOCs) by means of thermal desorption. Mikrochim Acta 2024; 191:169. [PMID: 38421458 PMCID: PMC10904424 DOI: 10.1007/s00604-024-06249-9] [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: 11/28/2023] [Accepted: 01/29/2024] [Indexed: 03/02/2024]
Abstract
The present work delves into the feasibility of employing a novel structured sorbent referred to as GFAD (Guefoam Adsorption Device) for the determination of volatile organic compounds (VOCs) in liquid samples. The chosen method has been static headspace sorptive extraction-thermal desorption gas chromatography mass spectrometry (HSSE-TD-GC-MS). The GFAD comprises an aluminum cellular material with a distinct replication structure and a solid guest phase consisting of activated carbon particles dispersed within the cavities of the cellular aluminum. The extensive specific surface area, robustness, and exceptional thermal conductivity of this pioneering material offer distinct advantages over commercially available polydimethylsiloxane-based Twister® devices. Therefore, the trapping efficiency for volatile organic compounds is enhanced, and it is possible to perform the analysis of concentrated samples. According to computational simulations, it has been demonstrated that GFAD has a high heat conductivity. As a result, the desorption efficiency is improved, and minimal temperature gradients are generated throughout the GFAD during the heating process. Besides, the energy consumption is significantly lowered, thus aligning with environmentally conscientious and sustainable analytical practices.The experimental results give a proof of the suitability of the GFAD for determining gaseous compounds in liquid samples through HSSE-TD-GC-MS. For volatile species, the new material provides higher peak areas and lower limits of detection than a commercially available Twister® device. Furthermore, the GFAD is reusable, its adsorbing properties remaining unchanged during, at least, 100 consecutive analyses. In addition, unlike to the Twister®, no intense siloxane peaks are observed in the chromatograms obtained with the GFAD. The feasibility of qualitative and semi-quantitative analysis with the new accessory has been demonstrated with both standards and a cereal bioethanol real sample.
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Affiliation(s)
- Raquel Sánchez
- Analytical Chemistry, Nutrition and Food Sciences Department, University of Alicante, P.O. Box 99, 03080, Alicante, Spain
| | - Ana Beltrán Sanahuja
- Analytical Chemistry, Nutrition and Food Sciences Department, University of Alicante, P.O. Box 99, 03080, Alicante, Spain
| | | | - José Luis Todolí
- Analytical Chemistry, Nutrition and Food Sciences Department, University of Alicante, P.O. Box 99, 03080, Alicante, Spain.
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3
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Abar T, Mestdagh H, Heninger M, Lemaire J. Analysis of VOCs in Liquids through Vaporization in a Tubular Oven Monitored by Chemical Ionization Mass Spectrometry. SENSORS (BASEL, SWITZERLAND) 2024; 24:1048. [PMID: 38400206 PMCID: PMC10891908 DOI: 10.3390/s24041048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024]
Abstract
The analysis of chemical compounds present at trace levels in liquids is important not only for environmental measurements but also, for example, in the health sector. The reference technique for the analysis of Volatile Organic Compounds (VOCs) in liquids is GC, which is difficult to use with an aqueous matrix. In this work, we present an alternative technique to GC to analyze VOCs in water. A tubular oven is used to completely vaporize the liquid sample deposited on a gauze. The oven is heated in the presence of a dinitrogen flow, and the gas is analyzed at the exit of the oven by a chemical ionization mass spectrometer developed in our laboratory. It is a low magnetic field Fourier Transform Ion Cyclotron Resonance (FT-ICR) optimized for real-time analysis. The Proton Transfer Reaction (PTR) used during the Chemical Ionization event results in the selective ionization of the VOCs present in the gas phase. The optimization of the desorption conditions is described for the main operating parameters: temperature ramp, liquid quantity, and nitrogen flow. Their influence is studied using a 100 ppmv aqueous toluene solution. The analytical method is then tested on a mixture of seven VOCs.
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Affiliation(s)
| | | | - Michel Heninger
- Institut de Chimie Physique, Centre National de la Recherche Scientifique, Université Paris-Saclay, 91400 Orsay, France; (T.A.); (H.M.); (J.L.)
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4
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Teng T, Huang WE, Li G, Wang X, Song Y, Tang X, Dawa D, Jiang B, Zhang D. Application of magnetic-nanoparticle functionalized whole-cell biosensor array for bioavailability and ecotoxicity estimation at urban contaminated sites. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 896:165292. [PMID: 37414179 DOI: 10.1016/j.scitotenv.2023.165292] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/01/2023] [Accepted: 07/01/2023] [Indexed: 07/08/2023]
Abstract
The bioavailability and ecotoxicity of pollutants are important for urban ecological systems and human health, particularly at contaminated urban sites. Therefore, whole-cell bioreporters are used in many studies to assess the risks of priority chemicals; however, their application is restricted by low throughput for specific compounds and complicated operations for field tests. In this study, an assembly technology for manufacturing Acinetobacter-based biosensor arrays using magnetic nanoparticle functionalization was developed to solve this problem. The bioreporter cells maintained high viability, sensitivity, and specificity in sensing 28 priority chemicals, seven heavy metals, and seven inorganic compounds in a high-throughput manner, and their performance remained acceptable for at least 20 d. We also tested the performance by assessing 22 real environmental soil samples from urban areas in China, and our results showed positive correlations between the biosensor estimation and chemical analysis. Our findings prove the feasibility of the magnetic nanoparticle-functionalized biosensor array to recognize the types and toxicities of multiple contaminants for online environmental monitoring at contaminated sites.
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Affiliation(s)
- Tingting Teng
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, PR China; College of New Energy and Environment, Jilin University, Changchun 130021, PR China
| | - Wei E Huang
- Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK
| | - Guanghe Li
- School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Xinzi Wang
- School of Environment, Tsinghua University, Beijing 100084, PR China; Suzhou Yiqing Environmental Technology Co. Ltd., Suzhou 215163, PR China
| | - Yizhi Song
- CAS Key Laboratory of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, PR China
| | - Xiaoyi Tang
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 2YQ, UK
| | - Dunzhu Dawa
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, PR China; College of New Energy and Environment, Jilin University, Changchun 130021, PR China
| | - Bo Jiang
- School of Energy and Environmental Engineering, University of Science & Technology Beijing, Beijing 100083, PR China
| | - Dayi Zhang
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, PR China; College of New Energy and Environment, Jilin University, Changchun 130021, PR China.
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5
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Sadiek I, Friedrichs G. Two species-one wavelength detection based on selective optical saturation spectroscopy. Sci Rep 2023; 13:17098. [PMID: 37816795 PMCID: PMC10564745 DOI: 10.1038/s41598-023-44195-3] [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: 07/28/2023] [Accepted: 10/04/2023] [Indexed: 10/12/2023] Open
Abstract
Cross-sensitivity limits accurate quantitative detection of species concentrations in all sensor technologies, including laser-based absorption techniques. Absorption sensors capture a signal that combines contributions from all interfering species at a given detection wavelength. Careful selection of the probed spectral line, broadband detection, or upstream separation can partially mitigate cross-sensitivity, however, weak or unidentified signal interference remains a challenge for accuracy. Here, we present a proof-of-principle study to overcome cross-sensitivity by taking advantage of the distinct optical saturation characteristics of different gas mixture components. By controlling the absorption contribution of a selected species by intentional optical saturation, simultaneous and quantitative detection of two interfering species becomes possible even without the need for spectral scanning, hence offering two species-one wavelength detection (2S1W) capability. Demonstrated with direct absorption and cavity-ringdown setups, the method offers a new, previously unexploited opportunity to further enhance laser-based analyzers for complex gas mixture analysis in environmental, medical, and technical applications.
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Affiliation(s)
- Ibrahim Sadiek
- Institute of Physical Chemistry, Kiel University, Kiel, Germany
- Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany
| | - Gernot Friedrichs
- Institute of Physical Chemistry, Kiel University, Kiel, Germany.
- Kiel Marine Science-Centre for Interdisciplinary Marine Sciences, Kiel, Germany.
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6
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HS-BAμE: A New Alternative Approach for VOCs Analysis-Application for Monitoring Biogenic Emissions from Tree Species. Molecules 2023; 28:molecules28031179. [PMID: 36770845 PMCID: PMC9919248 DOI: 10.3390/molecules28031179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 01/27/2023] Open
Abstract
In this work, a new analytical approach is proposed for monitoring biogenic volatile organic compounds (BVOCs) by combining headspace bar adsorptive microextraction (HS-BAμE) with gas chromatography-mass spectrometry (GC-MS). The HS-BAμE methodology was developed, optimized, validated and applied for the analysis of BVOCs emitted from two tree species (Eucalyptus globulus Labill. and Pinus pinaster Aiton) and compared with headspace solid phase microextraction (HS-SPME), commonly accepted as a reference technique. To achieve optimum experimental conditions, numerous assays were carried out by both methodologies, studying the release of the five major monoterpenoids (α-pinene, β-pinene, myrcene, limonene and 1,8-cineole) from the leaves of the tree species, whereas the maximum selectivity and efficiency were obtained using an activated carbon and PDMS/DVB fiber as sorbent phases for HS-BAμE and HS-SPME, respectively. Under optimized experimental conditions, both methodologies showed similar profiling and proportional responses, although the latter present a higher sensitivity in the analytical configuration used. For the five monoterpenoids studied, acceptable detection limits (LODs = 5.0 μg L-1) and suitable linear dynamic ranges (20.0-100.0 mg L-1; r2 ≥ 0.9959) were achieved, and intra- and inter-day studies proved that both methodologies exhibited good results (RSD and %RE ≤ 19.9%), which indicates a good fit for the assessment of BVOCs by the HS-BAμE/GC-MS methodology. Assays performed on sampled leaves by both optimized and validated methodologies showed high levels of the five major BVOCs released from E. globulus Labill. (10.2 ± 1.3 to 7828.0 ± 40.0 μg g-1) and P. pinaster Aiton (9.2 ± 1.4 to 3503.8 ± 396.3 μg g-1), which might act as potential fuel during forest fire's propagation, particularly under extreme atmospheric conditions. This is the first time that BAμE technology was applied in the HS sampling mode, and, in addition to other advantages, it has proven to be an effective and promising analytical alternative for monitoring VOCs, given its great simplicity, easy handling and low cost.
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7
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Pozzer AC, Gómez PA, Weiss J. Volatile organic compounds in aquatic ecosystems - Detection, origin, significance and applications. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156155. [PMID: 35609693 DOI: 10.1016/j.scitotenv.2022.156155] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 05/06/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
Volatile organic compounds (VOCs) include a broad range of compounds. Their production influences a large number of processes, having direct and secondary effects on different fields, such as climate change, economy and ecology. Although our planet is primarily covered with water (~70% of the globe surface), the information on aquatic VOCs, compared to the data available for the terrestrial environments, is still limited. Regardless of the difficulty in collecting and analysing data, because of their extreme complexity, diversification and important spatial-temporal emission variation, it was demonstrated that aquatic organisms are able to produce a variety of bioactive compounds. This production happens in response to abiotic and biotic stresses, evidencing the fundamental role of these metabolites, both in terms of composition and amount, in providing important ecological information and possible non-invasive tools to monitor different biological systems. The study of these compounds is an important and productive task with possible and interesting impacts in future practical applications in different fields. This review aims to summarize the knowledge on the aquatic VOCs, the recent advances in understanding their diverse roles and ecological impacts, the generally used methodology for their sampling and analysis, and their enormous potential as non-invasive, non-destructive and financeable affordable real-time biomonitoring tool, both in natural habitats and in controlled industrial situations. Finally, the possible future technical applications, highlighting their economic and social potential, such as the possibility to use VOCs as valuable alternative source of chemicals and as biocontrol and bioregulation agents, are emphasized.
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Affiliation(s)
- Anna Caterina Pozzer
- Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, Campus Muralla del Mar. 30202, Cartagena, Murcia, Spain
| | - Perla A Gómez
- Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, Campus Muralla del Mar. 30202, Cartagena, Murcia, Spain
| | - Julia Weiss
- Molecular Genetics, Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, Campus Muralla del Mar. 30202, Cartagena, Murcia, Spain.
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8
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Mengers HG, Zimmermann M, Blank LM. Using off-gas for insights through online monitoring of ethanol and baker's yeast volatilome using SESI-Orbitrap MS. Sci Rep 2022; 12:12462. [PMID: 35864195 PMCID: PMC9304407 DOI: 10.1038/s41598-022-16554-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 07/12/2022] [Indexed: 11/13/2022] Open
Abstract
Volatile organic compounds play an essential role in every domain of life, with diverse functions. In this study, we use novel secondary electrospray ionisation high-resolution Orbitrap mass spectrometry (SESI-Orbitrap MS) to monitor the complete yeast volatilome every 2.3 s. Over 200 metabolites were identified during growth in shake flasks and bioreactor cultivations, all with their unique intensity profile. Special attention was paid to ethanol as biotech largest product and to acetaldehyde as an example of a low-abundance but highly-volatile metabolite. While HPLC and Orbitrap measurements show a high agreement for ethanol, acetaldehyde could be measured five hours earlier in the SESI-Orbitrap MS. Volatilome shifts are visible, e.g. after glucose depletion, fatty acids are converted to ethyl esters in a detoxification mechanism after stopped fatty acid biosynthesis. This work showcases the SESI-Orbitrap MS system for tracking microbial physiology without the need for sampling and for time-resolved discoveries during metabolic transitions.
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Affiliation(s)
- Hendrik G Mengers
- Institute of Applied Microbiology - iAMB, Aachener Biology and Biotechnology - ABBt, RWTH Aachen University, Aachen, Germany
| | - Martin Zimmermann
- Institute of Applied Microbiology - iAMB, Aachener Biology and Biotechnology - ABBt, RWTH Aachen University, Aachen, Germany
| | - Lars M Blank
- Institute of Applied Microbiology - iAMB, Aachener Biology and Biotechnology - ABBt, RWTH Aachen University, Aachen, Germany.
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9
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Agrawal A, Yıldız ÜY, Hussain CG, Kailasa SK, Keçili R, Hussain CM. Greenness of lab-on-a-chip devices for analytical processes: Advances & future prospects. J Pharm Biomed Anal 2022; 219:114914. [PMID: 35843186 DOI: 10.1016/j.jpba.2022.114914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 06/22/2022] [Accepted: 06/25/2022] [Indexed: 11/25/2022]
Abstract
Lab-on-a-chip devices have now-a-days become an important aspect of analytical/bioanalytical chemistry having wide range of applications including clinical diagnosis, drug screening, cell biology, environmental monitoring, food safety analysis etc. Conventional lab-on-a-chip devices generally employ chemicals that are not environmentally friendly and were commonly fabricated on hard plastic platform which are non-degradable and hence ignore the importance of green analytical chemistry. In today's scenario, it is highly imperative to protect our environment by using less toxic and environmentally friendly chemicals/solvents and biocompatible platforms. Accordingly, the present article comprehensively reviews on the various green aspects of lab-on-a-chip devices for analytical processes which aim at fabricating environmentally friendly and cost-effective downsized devices so that the risk factor at the user's end upon longer exposure as well as to the environment can be reduced. The decisive factors for the accomplishment of green aspects of lab-on-a-chip devices including sample preparation using lab-on-a-chip systems to minimize the amount of sample/solvents to few microliters only, substitution of harmful solvents with green alternatives, minimal waste generation or proper treatment of waste and biodegradable and biocompatible platforms for fabricating lab-on-a-chip devices have been discussed in details. Additionally, the challenges that may hinder their commercialization are also critically discussed.
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Affiliation(s)
- Arpana Agrawal
- Department of Physics, Shri Neelkantheshwar Government Post-Graduate College, Khandwa 450001, India
| | - Ümit Yılmaz Yıldız
- Department of Medical Services and Techniques, Yunus Emre Vocational School of Health Services, Anadolu University, 26470 Eskişehir, Turkey
| | | | - Suresh Kumar Kailasa
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, 395 007, Gujarat, India
| | - Rüstem Keçili
- Department of Medical Services and Techniques, Yunus Emre Vocational School of Health Services, Anadolu University, 26470 Eskişehir, Turkey
| | - Chaudhery Mustansar Hussain
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA.
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10
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Xie D, Wang R, Fu J, Zhao Z, Li M. AuNPs@MIL-101 (Cr) as a SERS-Active Substrate for Sensitive Detection of VOCs. Front Bioeng Biotechnol 2022; 10:921693. [PMID: 35800331 PMCID: PMC9256292 DOI: 10.3389/fbioe.2022.921693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 04/27/2022] [Indexed: 11/21/2022] Open
Abstract
Surface-enhanced Raman scattering (SERS) is an important and powerful analytical technique in chemical and biochemical analyses. Metal–organic frameworks (MOFs) can effectively capture volatile organic compounds (VOCs) with high adsorption capacity and fast kinetics, and the local surface plasmon resonance characteristics of gold nanoparticles can quickly and effectively distinguish different VOCs by SERS. Combining both, we designed a novel SERS substrate based on embedding gold nanoparticles (AuNPs) within MIL-101(Cr) for the recognition of various VOCs in the gaseous phase. Occupying of AuNPs inside MIL-101(Cr) increased the micropore-specific surface area of AuNPs@MIL-101(Cr), which enabled AuNPs@MIL-101(Cr) to absorb more toluene molecules and consequently realized its high detection sensitivity. The detection limits for toluene, 4-ethylbenzaldehyde, and formaldehyde were down to 6, 5, and 75, ppm respectively. Moreover, this substrate could be used for detecting different VOCs simultaneously. Finally, we discussed the enhancement of AuNPs outside and inside MIL-101(Cr) on the Raman signal.
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Affiliation(s)
- Dan Xie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
| | - Ruimeng Wang
- Guangxi Key Laboratory of Agro-Environment and Agro-Product Safety, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China
| | - Jinghao Fu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
| | - Zhongxing Zhao
- Guangxi Key Laboratory of Agro-Environment and Agro-Product Safety, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China
- *Correspondence: Zhongxing Zhao, ; Min Li,
| | - Min Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
- *Correspondence: Zhongxing Zhao, ; Min Li,
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11
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Postnov VN, Rodinkov OV, Kildiyarova LI, Krokhina OA, Yuriev GO, Murin IV. Composite Sorbents Based on Silica and Multilayer Carbon Nanotubes. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222020207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Sensitivity Increase in Headspace Analysis of Hydrocarbons in Water by Using Online Selective Elimination of Gas Extractant. SEPARATIONS 2022. [DOI: 10.3390/separations9010015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
In this study, a novel approach in headspace gas chromatographic analysis using the selective absorption of the gas extractant during concentration of the analytes was developed. The carbon dioxide used as the gas extractant was removed from the sample flow by passing it through a column packed with microdispersed sodium hydroxide granules. The analytical capabilities of the suggested method were illustrated by the determination of aliphatic and aromatic hydrocarbons in water. We established that this method allows the preconcentration of analytes in the gas phase to be increased proportionally to the volume ratios of the gas extractant before and after absorption, while the analyte limits of detection decrease 30-fold. For example, benzene can be detected in water at a concentration of 0.5 μg/L.
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13
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Teuber A, Stach R, Haas J, Mizaikoff B. Innovative Substrate-Integrated Hollow Waveguide Coupled Attenuated Total Reflection Sensors for Quantum Cascade Laser Based Infrared Spectroscopy in Harsh Environments. APPLIED SPECTROSCOPY 2022; 76:132-140. [PMID: 34890273 DOI: 10.1177/00037028211064331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
An innovative mid-infrared spectroscopic sensor system based on quantum cascade lasers has been developed. The system combines the versatility of substrate-integrated hollow waveguides (IHWGs) with the robustness of attenuated total reflection (ATR) crystals employed as internal reflection waveguides for evanescent field sensing. IHWGs are highly reflective metal structures that propagate infrared (IR) radiation and were used as light pipes for coupling radiation into the ATR waveguide. The combined IHWG-ATR device has been designed such that the utmost stability and robustness of the optical alignment were ensured. This novel assembly enables evanescent field absorption measurements at yet unprecedently harsh conditions, that is, high pressure and temperature. Combining these advantages, this innovative sensor assembly is perfectly suited for taking ATR spectroscopy into the field where the robustness of the assembly and optical alignment is essential.
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Affiliation(s)
- Andrea Teuber
- Institute of Analytical and Bioanalytical Chemistry, 9189Ulm University, Ulm, Germany
| | | | | | - Boris Mizaikoff
- Institute of Analytical and Bioanalytical Chemistry, 9189Ulm University, Ulm, Germany
- 199772Hahn-Schickard, Ulm, Germany
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14
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Wang L, Zou Y, Sun H, Jon CS, Nardiello D, Quinto M, Shang HB, Li D. Ex-situ and in-situ rapid and quantitative determination of benzene derivatives in seawater using nanoconfined liquid phase nanoextraction. Talanta 2021; 235:122781. [PMID: 34517639 DOI: 10.1016/j.talanta.2021.122781] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 07/29/2021] [Accepted: 08/02/2021] [Indexed: 11/18/2022]
Abstract
Benzene derivatives (BDs) constitute a class of environmental pollutants whose exposure poses a grave risk to human health. These compounds rapidly diffuse from the atmosphere to the marine ecosystem: for this reason, their monitoring in seawater is every day more compelling. In this work, nanoconfined liquid phase nanoextraction (NLPNE), a versatile extraction technique recently described, has been for the first time applied to the gas chromatographic mass spectrometry (GC/MS) analysis of BDs in seawater. Ex-situ and in-situ NLPNE procedures have been developed and optimized in terms of extraction capabilities, analysis time, precision, and accuracy. Compared to the traditional extraction procedures, based on solid-phase microextraction (SPME) and liquid-liquid extraction (LLE), the proposed NLPNE methods allowed a rapid on-site analysis of benzene compounds with low solvent consumption, higher enrichment factors, and improved automation grade. Determination coefficients ranging from 0.9929 to 0.9997 were obtained for all BDs in the range 0.10-500 ng mL-1 and 5.00-500 ng mL-1, for ex-situ and in-situ NLPNE, respectively. Ex-situ and in-situ limits of detection ranged from 0.2 to 7.6 ng mL-1 and 0.04-1.00 ng mL-1. Our results suggest that NLPNE coupled to GC-MS can be considered a powerful technique for high-throughput analyses of trace compounds in environmental, food and biological samples.
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Affiliation(s)
- Liyuan Wang
- Department of Chemistry, Yanbian University, Park Road 977, Yanji, 133002, Jilin Province, PR China
| | - Yilin Zou
- Department of Chemistry, Yanbian University, Park Road 977, Yanji, 133002, Jilin Province, PR China
| | - Huaze Sun
- Department of Chemistry, Yanbian University, Park Road 977, Yanji, 133002, Jilin Province, PR China
| | - Chol-San Jon
- Department of Chemistry, Yanbian University, Park Road 977, Yanji, 133002, Jilin Province, PR China
| | - Donatella Nardiello
- DAFNE - Department of Agriculture, Food, Natural Resources and Engineering, University of Foggia, Via Napoli 25, I-71122, Foggia, Italy
| | - Maurizio Quinto
- Department of Chemistry, Yanbian University, Park Road 977, Yanji, 133002, Jilin Province, PR China; DAFNE - Department of Agriculture, Food, Natural Resources and Engineering, University of Foggia, Via Napoli 25, I-71122, Foggia, Italy
| | - Hai-Bo Shang
- Department of Chemistry, Yanbian University, Park Road 977, Yanji, 133002, Jilin Province, PR China.
| | - Donghao Li
- Department of Chemistry, Yanbian University, Park Road 977, Yanji, 133002, Jilin Province, PR China.
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15
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Gould O, Drabińska N, Ratcliffe N, de Lacy Costello B. Hyphenated Mass Spectrometry versus Real-Time Mass Spectrometry Techniques for the Detection of Volatile Compounds from the Human Body. Molecules 2021; 26:molecules26237185. [PMID: 34885767 PMCID: PMC8659178 DOI: 10.3390/molecules26237185] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 01/16/2023] Open
Abstract
Mass spectrometry (MS) is an analytical technique that can be used for various applications in a number of scientific areas including environmental, security, forensic science, space exploration, agri-food, and numerous others. MS is also continuing to offer new insights into the proteomic and metabolomic fields. MS techniques are frequently used for the analysis of volatile compounds (VCs). The detection of VCs from human samples has the potential to aid in the diagnosis of diseases, in monitoring drug metabolites, and in providing insight into metabolic processes. The broad usage of MS has resulted in numerous variations of the technique being developed over the years, which can be divided into hyphenated and real-time MS techniques. Hyphenated chromatographic techniques coupled with MS offer unparalleled qualitative analysis and high accuracy and sensitivity, even when analysing complex matrices (breath, urine, stool, etc.). However, these benefits are traded for a significantly longer analysis time and a greater need for sample preparation and method development. On the other hand, real-time MS techniques offer highly sensitive quantitative data. Additionally, real-time techniques can provide results in a matter of minutes or even seconds, without altering the sample in any way. However, real-time MS can only offer tentative qualitative data and suffers from molecular weight overlap in complex matrices. This review compares hyphenated and real-time MS methods and provides examples of applications for each technique for the detection of VCs from humans.
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Affiliation(s)
- Oliver Gould
- Centre for Research in Biosciences, Frenchay Campus, University of the West of England, Coldharbour Lane, Bristol BS16 1QY, UK; (N.R.); (B.d.L.C.)
- Correspondence: (O.G.); (N.D.)
| | - Natalia Drabińska
- Department of Chemistry and Biodynamics of Food, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, 10-748 Olsztyn, Poland
- Food Volatilomics and Sensomics Group, Faculty of Food Science and Nutrition, Poznan University of Life Sciences, 60-637 Poznan, Poland
- Correspondence: (O.G.); (N.D.)
| | - Norman Ratcliffe
- Centre for Research in Biosciences, Frenchay Campus, University of the West of England, Coldharbour Lane, Bristol BS16 1QY, UK; (N.R.); (B.d.L.C.)
| | - Ben de Lacy Costello
- Centre for Research in Biosciences, Frenchay Campus, University of the West of England, Coldharbour Lane, Bristol BS16 1QY, UK; (N.R.); (B.d.L.C.)
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16
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Agrawal A, Keçili R, Ghorbani-Bidkorbeh F, Hussain CM. Green miniaturized technologies in analytical and bioanalytical chemistry. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116383] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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Abstract
Volatile organic compounds (VOCs) are the main source influencing the overall air quality of an environment. It is a well-known fact that coated furniture units, in the form of paints and varnishes, emit VOCs, reducing the air quality and resulting in significant health problems. Exposure time to such compounds is also an important parameter regarding their possible health effects. Such issues also have a greater influence when the exposure period is extended. The main objective of this study was to review some of the important factors for the emission of VOCs from coated furniture, from the perspective of material characteristics, as well as health concerns. Some methods for controlling VOC emissions to improve indoor air quality, from the point of view recent regulations and suggestions, are also presented in this work.
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18
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Salve S, Bahiram Y, Jadhav A, Rathod R, Tekade RK. Nanoplatform-Integrated Miniaturized Solid-Phase Extraction Techniques: A Critical Review. Crit Rev Anal Chem 2021; 53:46-68. [PMID: 34096402 DOI: 10.1080/10408347.2021.1934651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Preparation of the biological samples is one of the most critical steps in sample analysis. In past decades, the liquid-liquid extraction technique has been used to extract the desired analytes from complex biological matrices. However, solid-phase extraction (SPE) gained popularity due to versatility, simplicity, selectivity, reproducibility, high sample recovery %, solvent economy, and time-saving nature. The superior extraction efficiency of SPE can be attributed to the development of advanced techniques, including the nanosorbents technology. The nanosorbent technology significantly simplified the sample preparation, improved the selectivity, diversified the application, and accelerated the sample analysis. This review critically expands on the to-date advancements reported in SPE with particular regards to the nanosorbent technology.
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Affiliation(s)
- Sushmita Salve
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Yogita Bahiram
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Amol Jadhav
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Rajeshwari Rathod
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Rakesh Kumar Tekade
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
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Rodinkov OV, Bugaichenko AS, Spivakovskyi V, Postnov VN. Sorption Preconcentration of Volatile Organic Compounds in Air Analysis with a Change in the Configuration of the Sorption Layer in a Transition from Sorption to Thermal Desorption. JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1134/s1061934821060125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Gehm C, Schnepel K, Czech H, Miersch T, Ehlert S, Zimmermann R. Hyper-fast gas chromatography and single-photon ionisation time-of-flight mass spectrometry with integrated electrical modulator-based sampling for headspace and online VOC analyses. Analyst 2021; 146:3137-3149. [PMID: 33949436 DOI: 10.1039/d1an00114k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed a novel fast gas chromatography (fastGC) instrument with integrated sampling of volatile organic compounds (VOCs) and detection by single-photon ionisation (SPI) time-of-flight mass spectrometry (TOFMS). A consumable-free electrical modulator rapidly cools down to -55 °C to trap VOCs and inject them on a short chromatographic column by prompt heating to 300 °C, followed by carrier gas exchange from air to helium. Due to the low thermal mass and optical heating, the fastGC is operated within total runtimes including cooling for 30 s and 15 s, referring to hyper-fast GC, and at a constantly increasing temperature ramp from 30 °C to 280 °C. The application of soft SPI-TOFMS allows the detection of co-eluting VOCs of different molecular compositions, which cannot be resolved by conventional GC (cGC) with electron ionisation (EI). Among other analytical figures of merit, we achieved limits of detection for toluene and p-xylene of 2 ppb and 0.5 ppb, respectively, at a signal-to-noise ratio of 3 and a linear response over a range of more than five orders of magnitude. Furthermore, we demonstrate the performance of the instrument on samples from the fields of environmental research and food science by headspace analysis of roasted coffee beans and needles from coniferous trees as well as by quasi-real-time analysis of biomass burning emissions and coffee roast gas.
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Affiliation(s)
- Christian Gehm
- Joint Mass Spectrometry Centre, Chair of Analytical Chemistry, University of Rostock, 18059 Rostock, Germany.
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21
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Comparison of Adsorbents Containing Carbon Nanotubes for Express Pre-Concentration of Volatile Organic Compounds from the Air Flow. SEPARATIONS 2021. [DOI: 10.3390/separations8040050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
New composite adsorbents including silica supports (silica, aerosilogel, and diatomite) and carbon materials (multiwall carbon nanotubes and pyrolytic carbon) have been prepared and characterized. The analytical capabilities of the produced sorbents have been evaluated by their efficiency in the express pre-concentration of volatile organic compounds (butanol and phenols) from the air stream. The prepared surface-layered adsorbents containing multiwall carbon nanotubes placed onto the surface of aerosilogel by use of the carbon vapor deposition method with preloading cobalt nanostructures as a catalyst were found significantly more efficient than traditionally used graphitic carbon-based adsorbents Carbopacks B, C, and X. Additionally, a new adsorbent composed of diatomite Porochrome-3 support coated with a pyrocarbon layer was prepared. This low surface area composited adsorbent allowed both quantitative pre-concentration of phenol and isomeric cresols from the air and their thermal desorption. The developed adsorbents provided fast pre-concentration of selected phenols with a concentration factor of 2 × 103 in 5 min and were used for gas chromatographic determination of analytes in the air at low concentration levels starting from several μg/m3 with a flame ionization detector.
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22
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Sunantha G, Vasudevan N. A method for detecting perfluorooctanoic acid and perfluorooctane sulfonate in water samples using genetically engineered bacterial biosensor. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 759:143544. [PMID: 33189373 DOI: 10.1016/j.scitotenv.2020.143544] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 11/03/2020] [Accepted: 11/04/2020] [Indexed: 05/29/2023]
Abstract
A simple, reagent and pre-treatment (i.e. dilution, sample purification and pH adjustment) free approach based genetically engineered bacterial biosensor is developed and demonstrated for the detection of perfluorinated compounds in water samples. The bacterial biosensor was developed by integrating two genes called regulatory (defluorinase gene) and reporter gene (green fluorescence gene) through genetic engineering techniques. The as-developed bacterial biosensor was employed to detect perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) in water samples upon induction of regulatory gene and expression of green fluorescence protein. The induced fluorescence emission by the biosensor was visualized using fluorescence microscopic images. The specificity of biosensor was evaluated with different types of organic pollutants such as chlorinated compounds, polyaromatic hydrocarbons and pesticides etc., in both presence and absence of PFOA and PFOS. The biosensor was employed to detect the perfluorinated compounds at nano gram level in both standard solutions and natural water samples like river water, wastewater and drinking water with an analysis time of 24 h. The detection of PFOA and PFOS by the developed-bacterial sensor is validated by liquid chromatography coupled with mass spectrometer. The developed biosensor has demonstrated a rapid and sensitive detection of PFOA and PFOS in various water samples.
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Affiliation(s)
- Ganesan Sunantha
- National Centre for Sustainable Coastal Management, Anna University Campus, Chennai 600025, India; Centre for Environmental Studies, Anna University, Chennai 600 025, Tamil Nadu, India.
| | - Namasivayam Vasudevan
- Centre for Environmental Studies, Anna University, Chennai 600 025, Tamil Nadu, India
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23
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24
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Rajapakse MY, Borras E, Fung AG, Yeap D, McCartney MM, Fabia FM, Kenyon NJ, Davis CE. An environmental air sampler to evaluate personal exposure to volatile organic compounds. Analyst 2021; 146:636-645. [PMID: 33205787 PMCID: PMC7856114 DOI: 10.1039/d0an01521k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A micro fabricated chip-based wearable air sampler was used to monitor the personnel exposure of volatile chemical concentrations in microenvironments. Six teenagers participated in this study and 14 volatile organic compounds (VOCs) including naphthalene, 3-decen-1-ol, hexanal, nonanal, methyl salicylate and limonene gave the highest abundance during routine daily activity. VOC exposure associated with daily activities and the location showed strong agreements with two of the participant's results. One of these subjects had the highest exposure to methyl salicylate that was supported by the use of a topical analgesic balm containing this compound. Environmental based air quality monitoring followed by the personnel exposure studies provided additional evidence associated to the main locations where the participants traveled. Toluene concentrations observed at a gas station were exceptionally high, with the highest amount observed at 1213.1 ng m-3. One subject had the highest exposure to toluene and the GPS data showed clear evidence of activities neighboring a gas station. This study shows that this wearable air sampler has potential applications including hazardous VOC exposure monitoring in occupational hazard assessment for certain professions, for example in industries that involve direct handling of petroleum products.
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Affiliation(s)
- Maneeshin Y Rajapakse
- Mechanical and Aerospace Engineering, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA.
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25
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Aggarwal P, Baker J, Boyd MT, Coyle S, Probert C, Chapman EA. Optimisation of Urine Sample Preparation for Headspace-Solid Phase Microextraction Gas Chromatography-Mass Spectrometry: Altering Sample pH, Sulphuric Acid Concentration and Phase Ratio. Metabolites 2020; 10:metabo10120482. [PMID: 33255680 PMCID: PMC7760603 DOI: 10.3390/metabo10120482] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/17/2020] [Accepted: 11/17/2020] [Indexed: 12/21/2022] Open
Abstract
Headspace-solid phase microextraction gas chromatography-mass spectrometry (HS-SPME-GC-MS) can be used to measure volatile organic compounds (VOCs) in human urine. However, there is no widely adopted standardised protocol for the preparation of urine samples for analysis resulting in an inability to compare studies reliably between laboratories. This paper investigated the effect of altering urine sample pH, volume, and vial size for optimising detection of VOCs when using HS-SPME-GC-MS. This is the first, direct comparison of H2SO4, HCl, and NaOH as treatment techniques prior to HS-SPME-GC-MS analysis. Altering urine sample pH indicates that H2SO4 is more effective at optimising detection of VOCs than HCl or NaOH. H2SO4 resulted in a significantly larger mean number of VOCs being identified per sample (on average, 33.5 VOCs to 24.3 in HCl or 12.2 in NaOH treated urine) and more unique VOCs, produced a more diverse range of classes of VOCs, and led to less HS-SPME-GC-MS degradation. We propose that adding 0.2 mL of 2.5 M H2SO4 to 1 mL of urine within a 10 mL headspace vial is the optimal sample preparation prior to HS-SPME-GC-MS analysis. We hope the use of our optimised method for urinary HS-SPME-GC-MS analysis will enhance our understanding of human disease and bolster metabolic biomarker identification.
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Affiliation(s)
- Prashant Aggarwal
- Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3BX, UK; (P.A.); (J.B.); (C.P.)
- School of Medicine, Cedar House, University of Liverpool, Liverpool L69 3GE, UK
| | - James Baker
- Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3BX, UK; (P.A.); (J.B.); (C.P.)
- School of Medicine, Cedar House, University of Liverpool, Liverpool L69 3GE, UK
| | - Mark T. Boyd
- Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, Cancer Research Centre, University of Liverpool, Liverpool L3 9TA, UK;
| | - Séamus Coyle
- Palliative Care Institute Liverpool, Cancer Research Centre, University of Liverpool, Liverpool L3 9TA, UK;
- Clatterbridge Cancer Centre, Liverpool L7 8YA, UK
| | - Chris Probert
- Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3BX, UK; (P.A.); (J.B.); (C.P.)
| | - Elinor A. Chapman
- Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3BX, UK; (P.A.); (J.B.); (C.P.)
- Palliative Care Institute Liverpool, Cancer Research Centre, University of Liverpool, Liverpool L3 9TA, UK;
- School of Medical Sciences, Bangor University, Bangor, Gwynedd LL57 2DG, UK
- Correspondence:
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26
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Kim M, Park HJ, Bae ON, Baek SH. Development and uncertainty estimation of cryogenic homogenization and static headspace–gas chromatography–mass spectrometry method for the simultaneous determination of twelve toxic volatiles in disposable menstrual products. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105291] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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27
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Hamid HHA, Latif MT, Uning R, Nadzir MSM, Khan MF, Ta GC, Kannan N. Observations of BTEX in the ambient air of Kuala Lumpur by passive sampling. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:342. [PMID: 32382809 DOI: 10.1007/s10661-020-08311-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 04/21/2020] [Indexed: 06/11/2023]
Abstract
Benzene, toluene, ethylbenzene and xylenes (BTEX) are well known hazardous volatile organic compounds (VOCs) due to their human health risks and photochemical effects. The main objective of this study was to estimate BTEX levels and evaluate interspecies ratios and ozone formation potentials (OFP) in the ambient air of urban Kuala Lumpur (KL) based on a passive sampling method with a Tenax® GR adsorbent tube. Analysis of BTEX was performed using a thermal desorption (TD)-gas chromatography mass spectrometer (GCMS). OFP was calculated based on the Maximum Incremental Reactivity (MIR). Results from this study showed that the average total BTEX during the sampling period was 66.06 ± 2.39 μg/m3. Toluene (27.70 ± 0.97 μg/m3) was the highest, followed by m,p-xylene (13.87 ± 0.36 μg/m3), o-xylene (11.49 ± 0.39 μg/m3), ethylbenzene (8.46 ± 0.34 μg/m3) and benzene (3.86 ± 0.31 μg/m3). The ratio of toluene to benzene (T:B) is > 7, suggesting that VOCs in the Kuala Lumpur urban environment are influenced by vehicle emissions and other anthropogenic sources. The average of ozone formation potential (OFP) value from BTEX was 278.42 ± 74.64 μg/m3 with toluene and xylenes being the major contributors to OFP. This study also indicated that the average of benzene concentration in KL was slightly lower than the European Union (EU)-recommended health limit value for benzene of 5 μg/m3 annual exposure.
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Affiliation(s)
- Haris Hafizal Abd Hamid
- Institute for Environmental and Development (LESTARI), Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Mohd Talib Latif
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
| | - Royston Uning
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Mohd Shahrul Mohd Nadzir
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
- Centre for Tropical Climate Change System, Institute of Climate Change, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Md Firoz Khan
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Goh Choo Ta
- Institute for Environmental and Development (LESTARI), Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Narayanan Kannan
- Smart Green Consultancy Sdn Bhd, 20A Jalan Ipoh Kecil, Off Jalan Ipoh, 50350, Kuala Lumpur, Malaysia
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28
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Biomonitoring of Workers Exposed to Volatile Organic Compounds Associated with Different Occupations by Headspace GC-FID. J CHEM-NY 2020. [DOI: 10.1155/2020/6956402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The present study has been undertaken to analyze the total accumulated burden of volatile organic compounds (VOCs) in blood of occupationally exposed workers. The headspace technique combined with gas chromatography with flame ionization detector was used for the quantitative analysis of the different volatile organic compounds (isopropyl alcohol, phenol, benzene, dichloromethane, ethanol, ethyl acetate, and toluene) in 80 blood samples from the workers belonging to different occupations i.e., shoe polish workers, thinner handlers, paint workers, furniture polish workers, petrol station attendants, textile dyeing workers, printing press workers, and dry port workers as biomonitoring is one of the most promising methods for analyzing the individual burden of VOCs. Another purpose of this study was to investigate the correlation between detected concentrations of VOCs and associated health issues reported by the workers of these professions. Results of the study revealed the presence of different VOCs in blood samples of approximately 70 workers out of 80, and statistical analysis proved a strong relationship between the reported work experience, working hours, and diseases and the detected concentrations of respective volatile organic compounds.
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29
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Lan H, Hartonen K, Riekkola ML. Miniaturised air sampling techniques for analysis of volatile organic compounds in air. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115873] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Aly AA, Górecki T. Green Approaches to Sample Preparation Based on Extraction Techniques. Molecules 2020; 25:E1719. [PMID: 32283595 PMCID: PMC7180442 DOI: 10.3390/molecules25071719] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/25/2020] [Accepted: 03/29/2020] [Indexed: 12/11/2022] Open
Abstract
Preparing a sample for analysis is a crucial step of many analytical procedures. The goal of sample preparation is to provide a representative, homogenous sample that is free of interferences and compatible with the intended analytical method. Green approaches to sample preparation require that the consumption of hazardous organic solvents and energy be minimized or even eliminated in the analytical process. While no sample preparation is clearly the most environmentally friendly approach, complete elimination of this step is not always practical. In such cases, the extraction techniques which use low amounts of solvents or no solvents are considered ideal alternatives. This paper presents an overview of green extraction procedures and sample preparation methodologies, briefly introduces their theoretical principles, and describes the recent developments in food, pharmaceutical, environmental and bioanalytical chemistry applications.
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Affiliation(s)
- Alshymaa A. Aly
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada;
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Menia Governorate 61519, Egypt
| | - Tadeusz Górecki
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada;
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31
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Rodinkov OV, Bugaichenko AS, Moskvin LN. Static Headspace Analysis and Its Current Status. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s106193482001013x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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32
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Gehm C, Streibel T, Ehlert S, Schulz-Bull D, Zimmermann R. Development and Optimization of an External-Membrane Introduction Photoionization Mass Spectrometer for the Fast Analysis of (Polycyclic)Aromatic Compounds in Environmental and Process Waters. Anal Chem 2019; 91:15547-15554. [DOI: 10.1021/acs.analchem.9b03480] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christian Gehm
- Joint Mass Spectrometry Centre, Chair of Analytical Chemistry, Institute of Chemistry, University of Rostock, Dr.-Lorenz-Weg 2, 18059 Rostock, Germany
| | - Thorsten Streibel
- Joint Mass Spectrometry Centre, Chair of Analytical Chemistry, Institute of Chemistry, University of Rostock, Dr.-Lorenz-Weg 2, 18059 Rostock, Germany
- Joint Mass Spectrometry Centre, Cooperation Group Comprehensive Molecular Analytics, Institute of Ecological Chemistry, Helmholtz Zentrum München-German Research Center of Environmental Health (GmbH), Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - Sven Ehlert
- Photonion GmbH, Hagenower Strasse 73, 19061 Schwerin, Germany
| | - Detlef Schulz-Bull
- Leibniz-Institute for Baltic Sea Research Warnemünde, Seestraße 15, 18119 Rostock−Warnemünde, Germany
| | - Ralf Zimmermann
- Joint Mass Spectrometry Centre, Chair of Analytical Chemistry, Institute of Chemistry, University of Rostock, Dr.-Lorenz-Weg 2, 18059 Rostock, Germany
- Joint Mass Spectrometry Centre, Cooperation Group Comprehensive Molecular Analytics, Institute of Ecological Chemistry, Helmholtz Zentrum München-German Research Center of Environmental Health (GmbH), Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
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33
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Jang KJ, Cha C, Lee KG. Analysis and reduction of benzene in various beverages such as vitamin drinks and cranberry juice. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.108444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kim EM, Kim DA, Kwon SW, Jin Y, Lee H, Kang S, Lee J. Headspace conditions and ingredients can affect artefactual benzene formation in beverages. Food Chem 2019; 293:278-284. [PMID: 31151612 DOI: 10.1016/j.foodchem.2019.04.089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 04/03/2019] [Accepted: 04/24/2019] [Indexed: 10/27/2022]
Abstract
A headspace sampling-gas chromatography/mass spectrometry (HS-GC/MS) method using mild HS conditions (40 °C, 30 min) was established, validated in terms of specificity, linearity (1.75-87.65 ng mL-1), precision (0.3-9.1% RSD), and accuracy (81.1-117.7%); and applied for the monitoring of 900 commercial beverage samples of six different types. These mild (low-temperature) conditions were compared with 1) optimized (high-temperature) conditions and 2) a liquid-phase microextraction method involving no heat treatment. This method was desirable because a high equilibrium temperature induced artefactual benzene formation from benzoate and ascorbic acid. In a 2IV8-3 fractional factorial design, eight variables-ascorbic acid, benzoate, benzaldehyde, Cu2+, Fe2+, riboflavin, pyridoxine, and heat treatment-were tested as potential factors affecting benzene formation. All variables except Fe2+ and pyridoxine significantly affected benzene formation, both individually and interactively. The present study suggests an accurate and reliable method for benzene analysis and provides strategies to prevent unintentional benzene formation in beverages.
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Affiliation(s)
- Eun Mi Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi 16419, Republic of Korea
| | - Dan Ah Kim
- College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sung Won Kwon
- College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yan Jin
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi 16419, Republic of Korea
| | - Heesoo Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi 16419, Republic of Korea
| | - Seulgi Kang
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi 16419, Republic of Korea
| | - Jeongmi Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi 16419, Republic of Korea.
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35
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Leaching of Organic Toxic Compounds from PVC Water Pipes in Medina Al-Munawarah, Kingdom of Saudi Arabia. Processes (Basel) 2019. [DOI: 10.3390/pr7100641] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
It is well established that the use of synthetic material in water pipes significantly affects the quality of domestic water, especially trace organics that are leached through with the flow of water. In the present study, the migration of volatile organic compounds (VOCs) from water pipes manufactured of polyvinyl chloride (PVC) has been investigated using static laboratory conditions and in residential areas. The contact of deionized water with various PVC pipes for three successive test periods of 24, 48, and 72 h duration has been made. Twenty water samples were collected from houses within Medina Al-Munawarah residential area and were analyzed by using solid phase extraction, followed by high resolution gas chromatography with flame ionized detector (GC-FID). The presence of carbon tetrachloride (CTC), toluene, chloroform, styrene, o-xylene, bromoform (BF), dibromomethane (DBM), cis-1,3-dichloropropane (Cis-1,3-DCP), and trans-1,3-dichloropropane (Trans-1,3-DCP) was initially confirmed. The most frequent contaminants found were DBM, CTC, and toluene that were monitored in 55%, 50%, and 45% of samples, respectively. The levels of CTC, Cis-1,3-DCP, and Trans-1,3-DCP were found to exceed the World Health Organization (WHO) limits in 50%, 20%, and 20% of samples, respectively. The migration test indicated that nine of the targeted contaminants occur in a double distilled water sample incubated in pipe in laboratory level experiment. This implies that these components are more likely to migrate from PVC pipe in home plumbing systems network.
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Rodinkov OV, Vagner EA, Bugaichenko AS, Moskvin LN. Comparison of the Efficiencies of Carbon Sorbents for the Preconcentration of Highly Volatile Organic Substances from Wet Gas Atmospheres for the Subsequent Gas-Chromatographic Determination. JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1134/s1061934819090089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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37
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Application of Needle Trap Device Based on the Carbon Aerogel for Trace Analysis of n-Hexane in Air Samples. Chromatographia 2019. [DOI: 10.1007/s10337-019-03779-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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38
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Lan H, Holopainen J, Hartonen K, Jussila M, Ritala M, Riekkola ML. Fully Automated Online Dynamic In-Tube Extraction for Continuous Sampling of Volatile Organic Compounds in Air. Anal Chem 2019; 91:8507-8515. [PMID: 31247721 PMCID: PMC6750644 DOI: 10.1021/acs.analchem.9b01668] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Comprehensive and time-dependent information (e.g., chemical composition, concentration) of volatile organic compounds (VOCs) in atmospheric, indoor, and breath air is essential to understand the fundamental science of the atmosphere, air quality, and diseases diagnostic. Here, we introduced a fully automated online dynamic in-tube extraction (ITEX)-gas chromatography/mass spectrometry (GC/MS) method for continuous and quantitative monitoring of VOCs in air. In this approach, modified Cycle Composer software and a PAL autosampler controlled and operated the ITEX preconditioning, internal standard (ISTD) addition, air sampling, and ITEX desorption sequentially to enable full automation. Air flow passed through the ITEX with the help of an external pump, instead of plunger up-down strokes, to allow larger sampling volumes, exhaustive extraction, and consequently lower detection limits. Further, in order to evaluate the ITEX system stability and to develop the corresponding quantitative ITEX method, two laboratory-made permeation systems (for standard VOCs and ISTD) were constructed. The stability and suitability of the developed system was validated with a consecutive 19 day atmospheric air campaign under automation. By using an electrospun polyacrylonitrile nanofibers packed ITEX, selective extraction of some VOCs and durability of over 1500 extraction and desorption cycles were achieved. Especially, the latter step is critically important for on-site long-term application at remote regions. This ITEX method provided 2-3 magnitudes lower quantitation limits than the headspace dynamic ITEX method and other needle trap methods. Our results proved the excellence of the fully automated online dynamic ITEX-GC/MS system for tracking VOCs in the atmospheric air.
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Affiliation(s)
- Hangzhen Lan
- Department of Chemistry , University of Helsinki , P.O. Box 55, 00014 Helsinki , Finland.,Institute for Atmospheric and Earth System Research , University of Helsinki , P.O. Box 64, 00014 Helsinki , Finland
| | - Jani Holopainen
- Department of Chemistry , University of Helsinki , P.O. Box 55, 00014 Helsinki , Finland
| | - Kari Hartonen
- Department of Chemistry , University of Helsinki , P.O. Box 55, 00014 Helsinki , Finland.,Institute for Atmospheric and Earth System Research , University of Helsinki , P.O. Box 64, 00014 Helsinki , Finland
| | - Matti Jussila
- Department of Chemistry , University of Helsinki , P.O. Box 55, 00014 Helsinki , Finland.,Institute for Atmospheric and Earth System Research , University of Helsinki , P.O. Box 64, 00014 Helsinki , Finland
| | - Mikko Ritala
- Department of Chemistry , University of Helsinki , P.O. Box 55, 00014 Helsinki , Finland
| | - Marja-Liisa Riekkola
- Department of Chemistry , University of Helsinki , P.O. Box 55, 00014 Helsinki , Finland.,Institute for Atmospheric and Earth System Research , University of Helsinki , P.O. Box 64, 00014 Helsinki , Finland
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Heynderickx PM. Dynamic headspace analysis using online measurements: Modeling of average and initial concentration. Talanta 2019; 198:573-584. [PMID: 30876601 DOI: 10.1016/j.talanta.2019.02.038] [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: 12/13/2018] [Revised: 02/06/2019] [Accepted: 02/07/2019] [Indexed: 11/28/2022]
Abstract
Dynamic headspace sampling is an important technique for the analysis of consumer products, the study of biological samples and environmental water analyses. This paper shows the influence of experimental conditions, such as the sampling time, sampling flow rate, headspace volume, liquid volume and Henry coefficient on the measured average concentration values. A corresponding closed expression as function of these variables is introduced in order to quantify the deviation of the initial headspace concentration. The proposed bi-exponential function embeds different current existing models for recovery calculation in dynamic sampling analyses in one single expression. A fully automated and user-friendly Excel® file to investigate or to model the dynamic headspace sampling results is added to everyone's easy use.
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Affiliation(s)
- Philippe M Heynderickx
- Center for Environmental and Energy Research (CEER) - Engineering of Materials via Catalysis and Characterization, Ghent University Global Campus, 119 Songdomunhwa-Ro, Yeonsu-Gu, Incheon 406-840, South Korea; Department of Green Chemistry and Technology (BW24), Faculty of Bioscience Engineering, Ghent University, 653 Coupure Links, Ghent B-9000, Belgium.
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40
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Zhang X, Chen J, Lian L, Wang X, Guo X, Chen H, Zhu B, Hou S, Lou D. Preparation and Application of Needle Extraction Device Packed with Sol–gel-Derived Perhydroxy Cucurbit[6]uril Coating Fiber. Chromatographia 2019. [DOI: 10.1007/s10337-019-03720-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Effective preconcentration of volatile organic compounds from aqueous solutions with polydimethylsiloxane-coated filter paper. Microchem J 2019. [DOI: 10.1016/j.microc.2018.12.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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42
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UETA I, KAJIMOTO M, SAITO Y. Purge-and-Trap Extraction with a Miniaturized Extraction Capillary for the Determination of Aqueous Formic Acids in Ion Chromatography. CHROMATOGRAPHY 2019. [DOI: 10.15583/jpchrom.2019.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- 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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43
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Gao J, Zhang C, Cheng Z, Liu D, Zhou Z, Wang P. Analysis of volatile organic compounds in environmental matrices by nitrogen-assisted headspace solid-phase extraction. NEW J CHEM 2019. [DOI: 10.1039/c9nj01524h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel pretreatment method named nitrogen-assisted headspace solid-phase extraction (NA/HS-SPE) was developed for the analysis of volatile organic pollutants in water, sediment, honey, and juice.
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Affiliation(s)
- Jing Gao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health
- Department of Applied Chemistry
- China Agricultural University
- Beijing
- P. R. China
| | - Chuntao Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health
- Department of Applied Chemistry
- China Agricultural University
- Beijing
- P. R. China
| | - Zheng Cheng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health
- Department of Applied Chemistry
- China Agricultural University
- Beijing
- P. R. China
| | - Donghui Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health
- Department of Applied Chemistry
- China Agricultural University
- Beijing
- P. R. China
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health
- Department of Applied Chemistry
- China Agricultural University
- Beijing
- P. R. China
| | - Peng Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health
- Department of Applied Chemistry
- China Agricultural University
- Beijing
- P. R. China
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44
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Grafit A, Muller D, Kimchi S, Avissar YY. Development of a Solid-phase microextraction (SPME) Fiber protector and its application in flammable liquid residues analysis. Forensic Sci Int 2018; 292:138-147. [DOI: 10.1016/j.forsciint.2018.09.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 08/01/2018] [Accepted: 09/05/2018] [Indexed: 01/28/2023]
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45
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Asfaw AA, Aspromonte J, Wolfs K, Van Schepdael A, Adams E. Overview of sample introduction techniques prior to GC for the analysis of volatiles in solid materials. J Sep Sci 2018; 42:214-225. [DOI: 10.1002/jssc.201800711] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/28/2018] [Accepted: 09/29/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Adissu Alemayehu Asfaw
- Department of Pharmaceutical and Pharmacological Sciences; Pharmaceutical Analysis; KU Leuven - University of Leuven; Leuven Belgium
- College of Health Sciences; Department of Pharmacy; Mekelle University; Mekelle Ethiopia
| | - Juan Aspromonte
- Department of Pharmaceutical and Pharmacological Sciences; Pharmaceutical Analysis; KU Leuven - University of Leuven; Leuven Belgium
| | - Kris Wolfs
- Department of Pharmaceutical and Pharmacological Sciences; Pharmaceutical Analysis; KU Leuven - University of Leuven; Leuven Belgium
| | - Ann Van Schepdael
- Department of Pharmaceutical and Pharmacological Sciences; Pharmaceutical Analysis; KU Leuven - University of Leuven; Leuven Belgium
| | - Erwin Adams
- Department of Pharmaceutical and Pharmacological Sciences; Pharmaceutical Analysis; KU Leuven - University of Leuven; Leuven Belgium
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46
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Development of a single format membrane assisted solvent extraction-molecularly imprinted polymer technique for extraction of polycyclic aromatic hydrocarbons in wastewater followed by gas chromatography mass spectrometry determination. J Chromatogr A 2018; 1569:36-43. [DOI: 10.1016/j.chroma.2018.07.061] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 07/17/2018] [Accepted: 07/24/2018] [Indexed: 11/22/2022]
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47
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Varona-Torres E, Carlton DD, Hildenbrand ZL, Schug KA. Matrix-effect-free determination of BTEX in variable soil compositions using room temperature ionic liquid co-solvents in static headspace gas chromatography mass spectrometry. Anal Chim Acta 2018; 1021:41-50. [DOI: 10.1016/j.aca.2018.03.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 03/06/2018] [Accepted: 03/07/2018] [Indexed: 01/08/2023]
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48
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Wen Y, Cao S, Xi C, Li X, Zhang L, Wang G, Shang J. Rapid Simultaneous Determination of Volatile Organic Compounds in Mattress Fabric by Headspace–Gas Chromatography–Mass Spectrometry. ANAL LETT 2018. [DOI: 10.1080/00032719.2017.1384832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Yao Wen
- College of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Shurui Cao
- The Inspection Technical Center, Chongqing Entry-Exit Inspection and Quarantine Bureau, Chongqing, China
| | - Cunxian Xi
- The Inspection Technical Center, Chongqing Entry-Exit Inspection and Quarantine Bureau, Chongqing, China
| | - Xianliang Li
- The Inspection Technical Center, Chongqing Entry-Exit Inspection and Quarantine Bureau, Chongqing, China
| | - Lei Zhang
- College of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Guomin Wang
- The Inspection Technical Center, Chongqing Entry-Exit Inspection and Quarantine Bureau, Chongqing, China
| | - Jingchuan Shang
- College of Pharmacy, Chongqing Medical University, Chongqing, China
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49
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PTR-MS and GC-MS as complementary techniques for analysis of volatiles: A tutorial review. Anal Chim Acta 2018; 1035:1-13. [PMID: 30224127 DOI: 10.1016/j.aca.2018.06.056] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 06/18/2018] [Accepted: 06/19/2018] [Indexed: 12/14/2022]
Abstract
This tutorial review is a critical commentary on the combined use of two instrumental analytical techniques, namely GC-MS and PTR-MS. The first mention of such an analytical approach likely appeared after the year 2000 and despite many advantages, it has not been applied very often. Therefore, the aim of this article is to elaborate on the concept of their combined use and to provide a curse tutorial for those considering taking such an approach. The issue of complementarity was raised in a broad sense of this term. Special emphasis was placed on indicating the possibilities of complementary utilization of GC-MS and PTR-MS and presenting the advantages and disadvantages as well as the current application of these techniques when used together.
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50
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Zeeb M, Farahani H, Mirza B, Papan MK. Quantification of Meloxicam in Human Plasma Using Ionic Liquid-Based Ultrasound-Assisted In Situ Solvent Formation Microextraction Followed by High-Performance Liquid Chromatography. J Chromatogr Sci 2018; 56:443-451. [PMID: 31986203 DOI: 10.1093/chromsci/bmy012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 11/24/2017] [Accepted: 02/05/2018] [Indexed: 12/17/2022]
Abstract
A robust extraction method against the variations of sample ionic strength viz. ionic liquid-based ultrasound-assisted in situ solvent formation microextraction (IL-UA-ISFME) was coupled for the first time with high-performance liquid chromatography-ultraviolet detection (HPLC-UV), and successfully used as a more sustainable approach for the determination of meloxicam (MEL) in human plasma. Herein, a hydrophobic IL (1-butyl-3-methylimidazolium hexafluorophosphate) was formed by adding a hydrophilic IL (1-butyl-3-methylimidazolium tetrafluoroborate) to aqueous sample solution containing an ion-exchange reagent (sodium hexafluorophosphate). The target analyte was transferred into the IL medium while the extraction solvent was completely dispersed into the sample using ultrasonic irradiation and then, the settled enriched phase was injected to HPLC. Firstly, main factors affecting the microextraction performance were evaluated and optimized. The linearity was in the range of 5-1,500 ng mL-1 with regression coefficient corresponding to 0.997. Limits of detection (LOD; signal-to-noise ratio (S/N) = 3) and quantification (LOQ, S/N = 10) were 1 and 5 ng mL-1, respectively. An acceptable recovery range of 82.1-93.6% and satisfactory intra-assay (3.6-4.8%, n = 6) and inter-assay (3.3-5.1%, n = 9) precision as well as remarkable sample clean up exhibited good efficiency of the method. The freeze-thaw stability study was performed for samples and standard solutions. To study the applicability of the proposed method, it was employed for the determination of MEL in human plasma after oral administration of the drug and some pharmacokinetic data were achieved. The technique proved to be accurate and reliable for the screening intentions.
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Affiliation(s)
- Mohsen Zeeb
- Department of Applied Chemistry, Faculty of Science, Islamic Azad University, South Tehran Branch, Pirouzi st., Dehhaghi st., PO Box 1777613651, Tehran, Iran
| | - Hadi Farahani
- Research Institute of Petroleum Industry (RIPI), West Blvd. of Azadi Sport Complex, PO Box 1485733111, Iran
| | - Behrooz Mirza
- Department of Chemistry, Karaj Branch, Islamic Azad University, Moazzen Blvd., PO Box 31485-313, Alborz, Iran
| | - Mohammad Kazem Papan
- Department of Chemistry, Payame Noor University, Nakhl st., PO Box 19395-4697, Tehran, Iran
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