Continuous VOCs Monitoring in Saturated and Unsaturated Zones Using Thermal Desorber and Gas Chromatography: System Development and Field Application
- Authors
- An, Jinsung; Baek, Dong-Jun; Hong, Jiseok; Choi, Eunsoo; Kim, Ijung
- Issue Date
- 2-Mar-2022
- Publisher
- MDPI
- Keywords
- BTEX; on-site monitoring; saturated zone; unsaturated zone; oil-contaminated site
- Citation
- INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, v.19, no.6
- Journal Title
- INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
- Volume
- 19
- Number
- 6
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/27462
- DOI
- 10.3390/ijerph19063400
- ISSN
- 1661-7827
- Abstract
- Subsurface VOC monitoring has been mainly based on manual sampling, transport, and analysis, which would require a sufficient amount of samples to ensure data accuracy and reliability, and additional costs to ensure sample quality. Therefore, a continuous on-site monitoring system is desirable for accurate measurement and subsequent risk assessment. In this study, benzene, toluene, ethylbenzene, and xylene (BTEX) were continuously monitored by the system based on a thermal desorber (TD) and gas chromatography (GC) in an oil-contaminated site that consisted of saturated and unsaturated zones. For the saturated zone, fully automated groundwater sampling and purging processes were performed, and the gasified samples were applied to the TD-GC system. For the unsaturated zone, the gaseous sample in the site was directly applied to the TD-GC system. After verifying the accuracy and precision of the monitoring system, the continuous monitoring system was successfully operated for more than a month in the field. The monitoring system used in this study is applicable to other sites for continuous monitoring, thus providing a scientific background for advanced risk assessment and policy development.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Civil and Environmental Engineering > Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/27462)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.