Evaluation of Passive Vapor Diffusion Samplers to Quantify Acetylene, Ethene, and Ethane in Groundwater

IF 1.8 4区 环境科学与生态学 Q3 WATER RESOURCES
Hao Wang, Rong Yu, David T. Adamson, Ramona Iery, David L. Freedman
{"title":"Evaluation of Passive Vapor Diffusion Samplers to Quantify Acetylene, Ethene, and Ethane in Groundwater","authors":"Hao Wang,&nbsp;Rong Yu,&nbsp;David T. Adamson,&nbsp;Ramona Iery,&nbsp;David L. Freedman","doi":"10.1111/gwmr.12629","DOIUrl":null,"url":null,"abstract":"<p>Acetylene, ethene, and ethane are products from the degradation of trichloroethene (TCE) in contaminated aquifers. However, the volatility of these gases makes it challenging to avoid excessive losses during sampling. The objective of this study was to compare the quantification of acetylene, ethene, and ethane using passive vapor diffusion (PVD) samplers vs. conventional low-flow groundwater collection. Samples were obtained from 8 to 13 monitoring wells at three sites that show potential for biotic and abiotic degradation of TCE in fractured rock aquifers. Method reporting limits (MRLs) for the PVD samplers were 0.25 μg/L for acetylene (0.0094 μM) and 0.28 μg/L for ethene and ethane (0.0099 and 0.0092 μM, respectively); the MRLs for conventional low-flow groundwater samples were ~40% higher. For two of the sites, the maximum concentrations of acetylene, ethene, and ethane obtained with the PVD samplers were comparable to the conventional low-flow samples. The frequency of detection for these gases with the PVD samplers was also comparable to conventional low-flow groundwater sampling. For one of the sites with higher levels of acetylene (maximum of 13 μg/L), the concentrations from the PVD samplers were approximately twofold higher than those with conventional low-flow groundwater sampling. Based on robust detection of acetylene, ethene, and/or ethane, it appears likely that degradation of TCE is occurring at the three sites that were sampled. The use of PVD samplers can reduce the possibility of false negative results to provide another line of evidence in support of natural attenuation.</p>","PeriodicalId":55081,"journal":{"name":"Ground Water Monitoring and Remediation","volume":"44 3","pages":"94-105"},"PeriodicalIF":1.8000,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ground Water Monitoring and Remediation","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/gwmr.12629","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"WATER RESOURCES","Score":null,"Total":0}
引用次数: 0

Abstract

Acetylene, ethene, and ethane are products from the degradation of trichloroethene (TCE) in contaminated aquifers. However, the volatility of these gases makes it challenging to avoid excessive losses during sampling. The objective of this study was to compare the quantification of acetylene, ethene, and ethane using passive vapor diffusion (PVD) samplers vs. conventional low-flow groundwater collection. Samples were obtained from 8 to 13 monitoring wells at three sites that show potential for biotic and abiotic degradation of TCE in fractured rock aquifers. Method reporting limits (MRLs) for the PVD samplers were 0.25 μg/L for acetylene (0.0094 μM) and 0.28 μg/L for ethene and ethane (0.0099 and 0.0092 μM, respectively); the MRLs for conventional low-flow groundwater samples were ~40% higher. For two of the sites, the maximum concentrations of acetylene, ethene, and ethane obtained with the PVD samplers were comparable to the conventional low-flow samples. The frequency of detection for these gases with the PVD samplers was also comparable to conventional low-flow groundwater sampling. For one of the sites with higher levels of acetylene (maximum of 13 μg/L), the concentrations from the PVD samplers were approximately twofold higher than those with conventional low-flow groundwater sampling. Based on robust detection of acetylene, ethene, and/or ethane, it appears likely that degradation of TCE is occurring at the three sites that were sampled. The use of PVD samplers can reduce the possibility of false negative results to provide another line of evidence in support of natural attenuation.

Abstract Image

Abstract Image

评估被动式蒸汽扩散采样器对地下水中乙炔、乙烯和乙烷的定量能力
乙炔、乙烯和乙烷是受污染含水层中三氯乙烯 (TCE) 降解的产物。然而,由于这些气体易挥发,因此在采样过程中要避免过多的损失非常困难。本研究的目的是比较使用被动蒸汽扩散 (PVD) 采样器与传统的低流量地下水收集法对乙炔、乙烯和乙烷进行定量的效果。样本取自三个地点的 8 至 13 口监测井,这三个地点的断裂岩含水层可能存在三氯乙烷的生物和非生物降解。PVD 采样器的方法报告限值(MRL)为乙炔 0.25 微克/升(0.0094 微摩尔),乙烯和乙烷 0.28 微克/升(分别为 0.0099 微摩尔和 0.0092 微摩尔);常规低流量地下水样本的方法报告限值高出约 40%。在其中两个地点,使用 PVD 采样器获得的乙炔、乙烯和乙烷的最大浓度与常规低流量样本相当。使用 PVD 采样器检测到这些气体的频率也与传统的低流量地下水采样相当。在乙炔含量较高的一个地点(最大值为 13 微克/升),PVD 采样器检测到的乙炔浓度比常规低流量地下水采样的浓度高出约两倍。根据乙炔、乙烯和/或乙烷的强检测结果,在三个取样点很可能正在发生三氯乙烷的降解。使用 PVD 采样器可以减少出现假阴性结果的可能性,为支持自然衰减提供另一种证据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
3.30
自引率
10.50%
发文量
60
审稿时长
>36 weeks
期刊介绍: Since its inception in 1981, Groundwater Monitoring & Remediation® has been a resource for researchers and practitioners in the field. It is a quarterly journal that offers the best in application oriented, peer-reviewed papers together with insightful articles from the practitioner''s perspective. Each issue features papers containing cutting-edge information on treatment technology, columns by industry experts, news briefs, and equipment news. GWMR plays a unique role in advancing the practice of the groundwater monitoring and remediation field by providing forward-thinking research with practical solutions.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信