Modeling the response of passive samplers to varying ambient fluid concentrations of organic contaminants

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Title Modeling the response of passive samplers to varying ambient fluid concentrations of organic contaminants
Author Hawker, Darryl William
Journal Name Environmental Toxicology and Chemistry
Year Published 2010
Place of publication United States
Publisher SETAC (Society of Environmental Toxicology and Chemistry)
Abstract Passive samplers are an important and versatile adjunct to active sampling methods for air and water. The underlying theory is increasingly mature but is often based on the assumption of constant concentrations with time in the ambient fluid. This theoretical work details the passive sampler response to possible environmental situations in which ambient concentrations vary linearly with time, decrease exponentially with time, constitute a pulsed event, or oscillate regularly with time. The modeled shape of sampler response curve with time is characteristic and can be used to determine how fluid concentrations have changed with time. The sampler elimination rate constant is shown to be crucial in governing sampler response. Thus, by using performance reference compounds and under certain conditions, information from the sampler response can in theory be used to derive specific details of the temporal variation of the contaminant in the ambient fluid. For example, data captured by a passive sampler can be used to characterize a contamination pulse. This extends the versatility of passive samplers.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1002/etc.69
Volume 29
Issue Number 3
Page from 591
Page to 596
ISSN 0730-7268
Date Accessioned 2010-05-31
Date Available 2010-09-01T08:08:34Z
Language en_AU
Research Centre Atmospheric Environment Research Centre
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Environmental Chemistry (incl Atmospheric Chemistry)
URI http://hdl.handle.net/10072/32219
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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