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Bondar O, Cavallari E, Carrera C, Aime S, Reineri F. Effect of the hydrogenation solvent in the PHIP-SAH hyperpolarization of [1-13C]pyruvate. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.11.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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2
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Pusfitasari ED, Ruiz-Jimenez J, Heiskanen I, Jussila M, Hartonen K, Riekkola ML. Aerial drone furnished with miniaturized versatile air sampling systems for selective collection of nitrogen containing compounds in boreal forest. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 808:152011. [PMID: 34861308 DOI: 10.1016/j.scitotenv.2021.152011] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/21/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
A wide variety of nitrogen-containing compounds are present in the environment, which contributes to air pollution and new particle formation, for example. These eventually affect human health and the climate. With all this consideration, there is a growing interest in the development of efficient and reliable methods to determine these compounds in the atmosphere. In this study, titanium hydrogen phosphate-modified Mobil Composition of Matter No. 41 was used as sorbent material for in-tube extraction (ITEX) sampling system, to selectively collect nitrogen-containing compounds from natural air samples. The effect of sampling accessories, based on adsorbent coatings (with Tenax-GR as an adsorbent material) and polytetrafluoroethylene filters, was studied to improve the selectivity of the sampling system and to remove particles. Aerial drone with miniaturized air sampling system was employed for the reliable collection of nitrogen-containing compounds in both gas phase and aerosol particles. A total of 170 air samples were collected in July 2020 at the SMEAR II station, Finland to evaluate nitrogen-containing compounds diurnal patterns and vertical profiles (0.25, 5, 50, and 150 m). More than twenty nitrogen-containing compounds, such as aliphatic amines, imines, imidazoles, and pyridines, were identified, quantified or semi-quantified. The average concentrations of detected aliphatic amines at the altitude of 50 m were up to 40.4 ng m-3 (dimethylamine) in gas phase and 128 ng m-3 (ethylamine) in aerosol particles. Among nitrogen-containing compounds detected, pyridine gave the highest average concentration of 746 ng m-3 in gas phase and 644 ng m-3 in particle phase.
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Affiliation(s)
- Eka Dian Pusfitasari
- Department of Chemistry and Institute for Atmospheric and Earth System Research, P.O. Box 55, FI-00014, University of Helsinki, Finland
| | - Jose Ruiz-Jimenez
- Department of Chemistry and Institute for Atmospheric and Earth System Research, P.O. Box 55, FI-00014, University of Helsinki, Finland
| | - Ilmari Heiskanen
- Department of Chemistry and Institute for Atmospheric and Earth System Research, P.O. Box 55, FI-00014, University of Helsinki, Finland
| | - Matti Jussila
- Department of Chemistry and Institute for Atmospheric and Earth System Research, P.O. Box 55, FI-00014, University of Helsinki, Finland
| | - Kari Hartonen
- Department of Chemistry and Institute for Atmospheric and Earth System Research, P.O. Box 55, FI-00014, University of Helsinki, Finland
| | - Marja-Liisa Riekkola
- Department of Chemistry and Institute for Atmospheric and Earth System Research, P.O. Box 55, FI-00014, University of Helsinki, Finland.
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3
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Yan Y, Fan J, Shen K, Cao Y, Kang X, Zhu H. Sampling and concentration of particulate matter bound polycyclic aromatic hydrocarbons (PAHs) basing on polystyrene nanofibers followed a determination by gas chromatography-mass spectrometry. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Kim G, Kim G, Kim D, Jung OS. Subtle metal( ii) effects of 2D coordination networks on SCSC guest exchange. CrystEngComm 2022. [DOI: 10.1039/d2ce00837h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The multi-channel crystals consisting of 2-D networks G@[M(NO3)2L] are an unusually efficient, tolerant, and reproducible matrix offering M-dependent adsorption/desorption of various guest molecules in the single-crystal-to-single-crystal mode.
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Affiliation(s)
- Gyeongwoo Kim
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea
| | - Gyeongmin Kim
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea
| | - Dongwon Kim
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea
| | - Ok-Sang Jung
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea
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5
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Baysal E, Uzun UC, Ertaş FN, Goksel O, Pelit L. Development of a new needle trap-based method for the determination of some volatile organic compounds in the indoor environment. CHEMOSPHERE 2021; 277:130251. [PMID: 33774250 DOI: 10.1016/j.chemosphere.2021.130251] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/03/2021] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
Volatile Organic Compounds (VOCs) are a large group of chemicals mostly found in indoor environments such as homes and workplaces. Long term exposure to certain VOCs can cause symptoms in some individuals and therefore, monitoring and controlling air quality can help better manage chronic respiratory diseases. In this study, we aimed to develop an easy-to-use, economical, in house needle trap-based methodology to detect certain VOCs to be used for public and occupational health. For this purpose, a multi-bed (packed with PDMS/Carbopack-X/Carboxen-1000) needle trap device (NTD) was utilized for sampling, enrichment, and injection of the VOCs into the gas chromatography. The performance of the developed method was investigated for the analysis of the group known as BTEX (benzene, toluene, ethylbenzene and xylene). Operational and instrumental parameters such as sampling flow rate and relative humidity, desorption time and temperature were optimized, and the analytical figures of merit of the proposed method have indicated that very low levels of BTEX in air samples can be easily determined by this new method. Overall results have shown that multi-bed NTD offers a high sensitive procedure for sampling and analysis of BTEX in concentration range of 0.002-0.298 mg/m3 in indoor air.
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Affiliation(s)
- Ertan Baysal
- Ege University Faculty of Science, Department of Chemistry, Bornova, İzmir, Turkey
| | - Umut Can Uzun
- Ege University Faculty of Science, Department of Chemistry, Bornova, İzmir, Turkey
| | - Fatma Nil Ertaş
- Ege University Faculty of Science, Department of Chemistry, Bornova, İzmir, Turkey; EgeSAM-Ege University Translational Pulmonary Research Center, Bornova, İzmir, Turkey
| | - Ozlem Goksel
- Ege University Faculty of Medicine, Department of Pulmonary Medicine, Division of Immunology, Allergy and Asthma, Laboratory of Occupational and Environmental Respiratory Diseases, Bornova, İzmir, Turkey; EgeSAM-Ege University Translational Pulmonary Research Center, Bornova, İzmir, Turkey
| | - Levent Pelit
- Ege University Faculty of Science, Department of Chemistry, Bornova, İzmir, Turkey; EgeSAM-Ege University Translational Pulmonary Research Center, Bornova, İzmir, Turkey.
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Vishinkin R, Busool R, Mansour E, Fish F, Esmail A, Kumar P, Gharaa A, Cancilla JC, Torrecilla JS, Skenders G, Leja M, Dheda K, Singh S, Haick H. Profiles of Volatile Biomarkers Detect Tuberculosis from Skin. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2100235. [PMID: 34075714 PMCID: PMC8336503 DOI: 10.1002/advs.202100235] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/19/2021] [Indexed: 02/05/2023]
Abstract
Tuberculosis (TB) is an infectious disease that threatens >10 million people annually. Despite advances in TB diagnostics, patients continue to receive an insufficient diagnosis as TB symptoms are not specific. Many existing biodiagnostic tests are slow, have low clinical performance, and can be unsuitable for resource-limited settings. According to the World Health Organization (WHO), a rapid, sputum-free, and cost-effective triage test for real-time detection of TB is urgently needed. This article reports on a new diagnostic pathway enabling a noninvasive, fast, and highly accurate way of detecting TB. The approach relies on TB-specific volatile organic compounds (VOCs) that are detected and quantified from the skin headspace. A specifically designed nanomaterial-based sensors array translates these findings into a point-of-care diagnosis by discriminating between active pulmonary TB patients and controls with sensitivity above 90%. This fulfills the WHO's triage test requirements and poses the potential to become a TB triage test.
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Affiliation(s)
- Rotem Vishinkin
- Department of Chemical Engineering and Russell Berrie Nanotechnology InstituteTechnion‐Israel Institute of TechnologyHaifa3200003Israel
| | - Rami Busool
- Department of Chemical Engineering and Russell Berrie Nanotechnology InstituteTechnion‐Israel Institute of TechnologyHaifa3200003Israel
| | - Elias Mansour
- Department of Chemical Engineering and Russell Berrie Nanotechnology InstituteTechnion‐Israel Institute of TechnologyHaifa3200003Israel
| | - Falk Fish
- Department of Chemical Engineering and Russell Berrie Nanotechnology InstituteTechnion‐Israel Institute of TechnologyHaifa3200003Israel
| | - Ali Esmail
- Centre for Lung Infection and ImmunityDivision of PulmonologyDepartment of Medicine and UCT Lung Institute & South African MRC/UCT Centre for the Study of Antimicrobial ResistanceUniversity of Cape TownCape Town 7925South Africa
| | - Parveen Kumar
- All India Institute of Medical SciencesNew Delhi110029India
| | - Alaa Gharaa
- Department of Chemical Engineering and Russell Berrie Nanotechnology InstituteTechnion‐Israel Institute of TechnologyHaifa3200003Israel
| | | | - Jose S. Torrecilla
- Department of Chemical and Materials EngineeringComplutense University of MadridMadrid28040Spain
| | - Girts Skenders
- Institute of Clinical and Preventive MedicineUniversity of Latvia and Riga east University HospitalRigaLV1079Latvia
| | - Marcis Leja
- Institute of Clinical and Preventive MedicineUniversity of Latvia and Riga east University HospitalRigaLV1079Latvia
| | - Keertan Dheda
- Centre for Lung Infection and ImmunityDivision of PulmonologyDepartment of Medicine and UCT Lung Institute & South African MRC/UCT Centre for the Study of Antimicrobial ResistanceUniversity of Cape TownCape Town 7925South Africa
- Faculty of Infectious and Tropical DiseasesDepartment of Infection BiologyLondon School of Hygiene and Tropical MedicineLondonWC1E 7HTUK
| | - Sarman Singh
- All India Institute of Medical SciencesNew Delhi110029India
| | - Hossam Haick
- Department of Chemical Engineering and Russell Berrie Nanotechnology InstituteTechnion‐Israel Institute of TechnologyHaifa3200003Israel
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Bouchra L, Szopa C, Buch A, Coscia D. Thermal stability of adsorbents used for gas chromatography in space exploration. J Chromatogr A 2021; 1644:462087. [PMID: 33819678 DOI: 10.1016/j.chroma.2021.462087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 03/15/2021] [Accepted: 03/19/2021] [Indexed: 10/21/2022]
Abstract
For analytical purpose, thermal desorption is now used in gas chromatographs developed to analyse the chemical composition of planetary environments. Due to technical constraints, the thermal desorption cannot be as finely controlled as in the laboratory resulting in possible thermal alteration of the adsorbents used. For these reasons, the influence of heat on physical and chemical properties of various adsorbents, either used or that could be used in gas chromatographs for space exploration, is studied. If the adsorbents made of carbon molecular sieves and graphitised carbon black that were tested show a very high thermal stability up to 800°C, the porous polymers tested are highly degraded from a minimum temperature that depends on the nature of the polymer. Poly-2,6-diphenylphenylene oxide is shown to be the more thermally robust as it is degraded at higher temperatures, confirming it is currently the best choice for analysing organic molecules with a space instrument. Finally, the products of degradation of the porous polymers tested were analysed after heating the porous polymers at 400 °C and 800 °C. They were identified and listed as potential contaminants of analyses performed with this type of adsorbent. If the exposure to the higher temperature produces numerous organic compounds, mainly aromatic ones, a few ones are also detected at the lower temperature tested, meaning they should be considered as potential contaminants. Again poly-2,6-diphenylphenylene oxide should be preferred because it releases less organic compounds, the structure of which is completely specific to the adsorbent composition.
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Affiliation(s)
- L Bouchra
- Laboratoire Atmosphère, Milieux, Observations Spatiales (LATMOS), LATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, CNES, 11 Bd d'Alembert, 78280 Guyancourt, France
| | - C Szopa
- Laboratoire Atmosphère, Milieux, Observations Spatiales (LATMOS), LATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, CNES, 11 Bd d'Alembert, 78280 Guyancourt, France; Institut Universitaire de France, Paris, France.
| | - A Buch
- Laboratoire Génie des Procédés et Matériaux, CentraleSupelec, Gif-sur-Yvette, France
| | - D Coscia
- Laboratoire Atmosphère, Milieux, Observations Spatiales (LATMOS), LATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, CNES, 11 Bd d'Alembert, 78280 Guyancourt, France
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8
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Park J, Thomasson JA, Gale CC, Sword GA, Lee KM, Herrman TJ, Suh CPC. Adsorbent-SERS Technique for Determination of Plant VOCs from Live Cotton Plants and Dried Teas. ACS OMEGA 2020; 5:2779-2790. [PMID: 32095701 PMCID: PMC7033990 DOI: 10.1021/acsomega.9b03500] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 01/29/2020] [Indexed: 05/08/2023]
Abstract
We developed a novel substrate for the collection of volatile organic compounds (VOCs) emitted from either living or dried plant material to be analyzed by surface-enhanced Raman spectroscopy (SERS). We demonstrated that this substrate can be utilized to differentiate emissions from blends of three teas, and to differentiate emissions from healthy cotton plants versus caterpillar-infested cotton plants. The substrate we developed can adsorb VOCs in static headspace sampling environments, and VOCs naturally evaporated from three standards were successfully identified by our SERS substrate, showing its ability to differentiate three VOCs and to detect quantitative differences according to collection times. In addition, volatile profiles from plant materials that were either qualitatively different among three teas or quantitatively different in abundance between healthy and infested cotton plants were confirmed by collections on Super-Q resin for dynamic headspace and solid-phase microextraction for static headspace sampling, respectively, followed by gas chromatography to mass spectrometry. Our results indicate that both qualitative and quantitative differences can also be detected by our SERS substrate although we find that the detection of quantitative differences could be improved.
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Affiliation(s)
- Jinhyuk Park
- Department
of Biological and Agricultural Engineering, Texas A&M University, College Station, Texas 77843, United States
- E-mail: . Tel: +1-979-224-7055
| | - J. Alex Thomasson
- Department
of Biological and Agricultural Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Cody C. Gale
- Department
of Entomology, Texas A&M University, College Station, Texas 77843-2475, United States
| | - Gregory A. Sword
- Department
of Entomology, Texas A&M University, College Station, Texas 77843-2475, United States
| | - Kyung-Min Lee
- Office
of the Texas State Chemist, Texas A&M AgriLife Research, Texas A&M University System, College Station, Texas 77841, United States
| | - Timothy J. Herrman
- Office
of the Texas State Chemist, Texas A&M AgriLife Research, Texas A&M University System, College Station, Texas 77841, United States
| | - Charles P.-C. Suh
- Insect
Control and Cotton Disease Research Unit, USDA, ARS, 2771 F&B
Road, College Station, Texas 77845, United States
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9
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Lu X, He J, Xie J, Zhou Y, Liu S, Zhu Q, Lu H. Preparation of hydrophobic hierarchical pore carbon-silica composite and its adsorption performance toward volatile organic compounds. J Environ Sci (China) 2020; 87:39-48. [PMID: 31791512 DOI: 10.1016/j.jes.2019.05.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 04/29/2019] [Accepted: 05/06/2019] [Indexed: 06/10/2023]
Abstract
Carbon-silica materials with hierarchical pores consisting of micropores and mesopores were prepared by introducing nanocarbon microspheres derived from biomass sugar into silica gel channels in a hydrothermal environment. The physicochemical properties of the materials were characterized by nitrogen physical adsorption (BET), scanning electron microscopy (SEM), and thermogravimetric (TG), and the adsorption properties of various organic waste gases were investigated. The results showed that microporous carbon materials were introduced successfully into the silica gel channels, thus showing the high adsorption capacity of activated carbon in high humidity organic waste gas, and the high stability and mechanical strength of the silica gel. The dynamic adsorption behavior confirmed that the carbon-silica material had excellent adsorption capacity for different volatile organic compounds (VOCs). Furthermore, the carbon-silica material exhibited excellent desorption characteristics: adsorbed toluene was completely desorbed at 150°C, thereby showing superior regeneration characteristics. Both features were attributed to the formation of hierarchical pores.
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Affiliation(s)
- Xiaoai Lu
- Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Junqian He
- Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jing Xie
- Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Ying Zhou
- Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Shuo Liu
- Hangzhou Runxin Technology Co. Ltd, Hangzhou 310014, China
| | - Qiulian Zhu
- Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Hanfeng Lu
- Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
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Wang M, Sheng J, Wu Q, Zou Y, Hu Y, Ying K, Wan H, Wang P. Confounding effect of benign pulmonary diseases in selecting volatile organic compounds as markers of lung cancer. J Breath Res 2018; 12:046013. [PMID: 30102249 DOI: 10.1088/1752-7163/aad9cc] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Lung cancer (LC) is a leading cause of cancer-related morbidity and mortality globally, and exhaled breath testing has been considered as a fast, convenient and non-invasive way to diagnose LC in its early stages. Volatile organic compounds (VOCs), as markers of LC in exhaled breath, have been widely investigated for cancer diagnosis. However, few studies have reported on the interference of benign pulmonary diseases (BPD) in the selection of VOC markers for LC. During this study, 207 samples were analyzed using thermal desorption instrumentation/gas chromatography/mass spectrometry (TD-GCMS) to detect C6-C30 VOCs, and all samples were divided into four groups: LC group, BPD group, lung disease (LD) group (including LC group and BPD group) and healthy group. To make up for the deficiency of detecting low carbon hydrocarbons (<C6), 277 samples were analyzed using solid-phase micro-extraction/gas chromatography/mass spectrometry (SPME-GCMS), divided among the four groups. VOC markers were selected by reference to the receiver operating characteristics curve. With the comparisons among the LC group, BPD group and healthy group from TD-GCMS and SPME-GCMS results, we found that exhaled VOCs are capable of discriminating LC group versus healthy group and BPD group versus healthy group with a consistency of 70%-80%. However, no VOCs can be selected with good discrimination capability between the LC group and BPD group, indicating that BPD interferes significantly in VOC marker selection for LC. To discriminate breath samples from the LD group and healthy group, 11 VOCs, including ten selected from TD-GCMS and one from SPME-GCMS, were chosen as markers for LD diagnosis. The sensitivity, specificity and overall accuracy of the diagnostic model established using ten VOCs were 80.8%, 84% and 82.7%, and those of the model established by using one VOC were 75.6%, 78.9% and 76.7%. These results validate that LD patients can be effectively discriminated and diagnosed using exhaled VOC analysis. (Clinical trial registration number: ChiCTR-DCD-15007106.).
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Affiliation(s)
- Min Wang
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou, People's Republic of China. State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China
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Wang CM, Barratt B, Carslaw N, Doutsi A, Dunmore RE, Ward MW, Lewis AC. Unexpectedly high concentrations of monoterpenes in a study of UK homes. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2017; 19:528-537. [PMID: 28224154 DOI: 10.1039/c6em00569a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The abundance of volatile organic compounds (VOCs) found in homes depends on many factors such as emissions, ventilation and the oxidative environment and these are evolving over time, reflecting changes in chemical use, behaviour and building design/materials. The concentrations of VOCs in 25 UK homes of varying ages, design and occupancy were quantified using continuous indoor air sampling over five days. Air was collected through low flow (1 mL min-1) constant flow restrictors into evacuated 6 L internally silica-treated canisters until the canisters reached atmospheric pressure. This was followed by thermal desorption-gas chromatography and high mass accuracy time-of-flight mass spectrometry (TD-GC-TOF/MS). A fully quantitative analysis was performed on the eight most abundant hydrocarbon-based VOCs found. Despite differences in building characteristics and occupant numbers 94% of the homes had d-limonene or α-pinene as the most abundant VOCs. The variability seen across the 25 homes in concentrations of monoterpenes indoors was considerably greater than that of species such as isoprene, benzene, toluene and xylenes. The variance in VOCs indoors appeared to be strongly influenced by occupant activities such as cleaning with 5-day average concentrations of d-limonene ranging from 18 μg m-3 to over 1400 μg m-3, a peak domestic value that is possibly the highest yet reported in the literature.
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