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Calibration of Adsorbent Based Passive Vapor Samplers for Concentration Reporting in Air, Soil Gas, and Water for Vapor Intrusion Investigations
Oral Presentation
Prepared by J. Whetzel, H. Anderson, I. McMullen, D. D'Apolito
Amplified Geochemical Imaging, LLC, 100 Chesapeake Blvd, Elkton, Maryland, 21921
Contact Information: whetzel@agisurveys.net; 410-506-4779
ABSTRACT
Passive Vapor Samplers have been used for indoor and outdoor air monitoring as a quantitative tool for a number of years. Various consensus standards exist to describe how these samplers are to be calibrated according to considerations of Fick's First Law of Diffusion. These principles have been extensively applied to volatile organic compound (VOC) detection with passive samplers designed with a two dimensional diffusion surface for air sampling, but have not generally been applied to samplers that have a three dimensional diffusion surface or for passive sampler measurements in water.
Determination of VOCs in air, water, and soil gas are critical for determining the potential for vapor intrusion into structures. Interest in the use of passive samplers for VI investigation stems from their ease of use and potential for longer term sampling and relatively low detection limits. Using a hydrophobic inert membrane to protect adsorbents allows the application of passive sampling to air, water, and soil vapor. This presentation will describe methods to calibrate the compound uptake rates and subsequent determination of VOC concentrations in air, water, and soil gas using a membrane protected adsorbent based passive sampler.
Oral Presentation
Prepared by J. Whetzel, H. Anderson, I. McMullen, D. D'Apolito
Amplified Geochemical Imaging, LLC, 100 Chesapeake Blvd, Elkton, Maryland, 21921
Contact Information: whetzel@agisurveys.net; 410-506-4779
ABSTRACT
Passive Vapor Samplers have been used for indoor and outdoor air monitoring as a quantitative tool for a number of years. Various consensus standards exist to describe how these samplers are to be calibrated according to considerations of Fick's First Law of Diffusion. These principles have been extensively applied to volatile organic compound (VOC) detection with passive samplers designed with a two dimensional diffusion surface for air sampling, but have not generally been applied to samplers that have a three dimensional diffusion surface or for passive sampler measurements in water.
Determination of VOCs in air, water, and soil gas are critical for determining the potential for vapor intrusion into structures. Interest in the use of passive samplers for VI investigation stems from their ease of use and potential for longer term sampling and relatively low detection limits. Using a hydrophobic inert membrane to protect adsorbents allows the application of passive sampling to air, water, and soil vapor. This presentation will describe methods to calibrate the compound uptake rates and subsequent determination of VOC concentrations in air, water, and soil gas using a membrane protected adsorbent based passive sampler.