A Review of Vapor Intrusion Models

A complete vapor intrusion (VI) model, describing vapor entry of volatile organic chemicals (VOCs) into buildings located on contaminated sites, generally consists of two main parts: one part describing vapor transport in the soil and the other describing its entry into the building. Modeling the so...

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Veröffentlicht in:Environmental science & technology 2013-03, Vol.47 (6), p.2457-2470
Hauptverfasser: Yao, Yijun, Shen, Rui, Pennell, Kelly G, Suuberg, Eric M
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container_title Environmental science & technology
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creator Yao, Yijun
Shen, Rui
Pennell, Kelly G
Suuberg, Eric M
description A complete vapor intrusion (VI) model, describing vapor entry of volatile organic chemicals (VOCs) into buildings located on contaminated sites, generally consists of two main parts: one part describing vapor transport in the soil and the other describing its entry into the building. Modeling the soil vapor transport part involves either analytically or numerically solving the equations of vapor advection and diffusion in the subsurface. Contaminant biodegradation must often also be included in this simulation, and can increase the difficulty of obtaining a solution, especially when explicitly considering coupled oxygen transport and consumption. The models of contaminant building entry pathway are often coupled to calculations of indoor air contaminant concentration, and both are influenced by building construction and operational features. The description of entry pathway involves consideration of building foundation characteristics, while calculation of indoor air contaminant levels requires characterization of building enclosed space and air exchange within this. This review summarizes existing VI models, and discusses the limits of current screening tools commonly used in this field.
doi_str_mv 10.1021/es302714g
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subjects Air Pollution, Indoor - analysis
Applied sciences
Atmospheric pollution
Biodegradation, Environmental
Buildings. Public works
Computer Simulation
Diffusion
Environmental Pollutants - analysis
Environmental Pollutants - metabolism
Exact sciences and technology
Indoor pollution and occupational exposure
Models, Chemical
Pollution
Pollution indoor buildings
Soil - chemistry
Volatile Organic Compounds - analysis
Volatile Organic Compounds - metabolism
Volatilization
title A Review of Vapor Intrusion Models
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