Application of portable gas chromatography–mass spectrometer for rapid field based determination of TCE in soil vapour and groundwater
Article
Article Title | Application of portable gas chromatography–mass spectrometer for rapid field based determination of TCE in soil vapour and groundwater |
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ERA Journal ID | 210427 |
Article Category | Article |
Authors | Wang, Liang (Author), Cheng, Ying (Author), Naidu, Ravi (Author), Chadalavada, Sreenivasulu (Author), Bekele, Dawit (Author), Gell, Peter (Author), Donaghey, Mark (Author) and Bowman, Mark (Author) |
Journal Title | Environmental Technology and Innovation |
Journal Citation | 21, pp. 1-11 |
Article Number | 101274 |
Number of Pages | 11 |
Year | 2021 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 2352-1864 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.eti.2020.101274 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S2352186420315741 |
Abstract | The application of portable chromatography–mass spectrometer (GC–MS) is restrained by its detection limits without the development of proper sample pre-concentration methods. The primary focus of this paper is to introduce a practical field measurement methodology for the analysis of volatile organic compounds (VOCs) in soil vapour and groundwater using a portable gas (GC–MS)system for application to in situ assessment of vapour intrusion from VOC contamination. A solid-phase micro-extraction (SPME) technique was applied for sample pre-concentration before the GC–MS measurement. Practical in-field soil gas SPME sampling methods have been developed to optimise the SPME extraction efficiency to then ultimately improve the detection limits of portable GC–MS. An Australian site impacted by a chlorinated VOC, trichloroethylene (TCE), was the subject of the case study. To rapidly assess soil vapour samples in subsurface soil, in-house-developed retractable soil vapour sampling probes (SVSPs) were installed at the site in clusters at depths of 1 m, 2 m and 3 m below ground level at each sampling location. Use of the SVSPs for sampling enabled the generation of a three-dimensional map and distribution contours for TCE concentrations using the in situ measurement results of a portable GC–MS analysis for vapour intrusion investigation. The results of the portable GC–MS analysis were compared with the results from conventional USEPA methods, such as TO-15 and Method 8265 for soil vapour and groundwater samples, respectively. This work demonstrates that the developed methodology of using a portable GC–MS system has the capability for in-field quantitative analysis of VOCs for rapid contaminated site vapour intrusion assessment. |
Keywords | Contaminated sites; Extraction efficiencies; In-situ assessment; In-situ measurement; Solid phase micro extraction; TCE concentrations; Three-dimensional maps; Vapour intrusions |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 410402. Environmental assessment and monitoring |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Newcastle |
Department of Defence, Australia | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6z3q/application-of-portable-gas-chromatography-mass-spectrometer-for-rapid-field-based-determination-of-tce-in-soil-vapour-and-groundwater
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