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DOI | 10.1002/2016WR020317 |
A two-dimensional analytical model of vapor intrusion involving vertical heterogeneity | |
Yao, Yijun1,2,3; Verginelli, Iason4; Suuberg, Eric M.5 | |
2017-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Italy; USA |
英文摘要 | In this work, we present an analytical chlorinated vapor intrusion (CVI) model that can estimate source-to-indoor air concentration attenuation by simulating two-dimensional (2-D) vapor concentration profile in vertically heterogeneous soils overlying a homogenous vapor source. The analytical solution describing the 2-D soil gas transport was obtained by applying a modified Schwarz-Christoffel mapping method. A partial field validation showed that the developed model provides results (especially in terms of indoor emission rates) in line with the measured data from a case involving a building overlying a layered soil. In further testing, it was found that the new analytical model can very closely replicate the results of three-dimensional (3-D) numerical models at steady state in scenarios involving layered soils overlying homogenous groundwater sources. By contrast, by adopting a two-layer approach (capillary fringe and vadose zone) as employed in the EPA implementation of the Johnson and Ettinger model, the spatially and temporally averaged indoor concentrations in the case of groundwater sources can be higher than the ones estimated by the numerical model up to two orders of magnitude. In short, the model proposed in this work can represent an easy-to-use tool that can simulate the subsurface soil gas concentration in layered soils overlying a homogenous vapor source while keeping the simplicity of an analytical approach that requires much less computational effort. |
英文关键词 | vapor intrusion chlorinated solvents analytical solution screening model risk assessment |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403712100058 |
WOS关键词 | 3-DIMENSIONAL NUMERICAL-MODEL ; INDOOR AIR CONCENTRATIONS ; CONTAMINANT VAPORS ; SOIL ; GROUNDWATER ; PRESSURE ; FLOW ; SIMULATION ; BUILDINGS ; BASEMENT |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21189 |
专题 | 资源环境科学 |
作者单位 | 1.Zhejiang Univ, Coll Environm & Resource Sci, Key Lab Environm Remediat & Ecosyst Hlth, Minist Educ, Hangzhou, Zhejiang, Peoples R China; 2.Zhejiang Univ, Res Ctr Air Pollut & Hlth, Hangzhou, Zhejiang, Peoples R China; 3.Zhejiang Univ, Inst Environm Hlth, Hangzhou, Zhejiang, Peoples R China; 4.Univ Rome, Dept Civil Engn & Comp Sci Engn, Rome, Italy; 5.Brown Univ, Sch Engn, Providence, RI 02912 USA |
推荐引用方式 GB/T 7714 | Yao, Yijun,Verginelli, Iason,Suuberg, Eric M.. A two-dimensional analytical model of vapor intrusion involving vertical heterogeneity[J]. WATER RESOURCES RESEARCH,2017,53(5). |
APA | Yao, Yijun,Verginelli, Iason,&Suuberg, Eric M..(2017).A two-dimensional analytical model of vapor intrusion involving vertical heterogeneity.WATER RESOURCES RESEARCH,53(5). |
MLA | Yao, Yijun,et al."A two-dimensional analytical model of vapor intrusion involving vertical heterogeneity".WATER RESOURCES RESEARCH 53.5(2017). |
条目包含的文件 | 条目无相关文件。 |
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