Time integrative passive sampling: How well do chemcatchers integrate fluctuating pollutant concentrations?

Shaw, Melanie and Mueller, Jochen F. (2009) Time integrative passive sampling: How well do chemcatchers integrate fluctuating pollutant concentrations?. Environmental Science and Technology, 43 5: 1443-1448. doi:10.1021/es8021446

Author Shaw, Melanie
Mueller, Jochen F.
Title Time integrative passive sampling: How well do chemcatchers integrate fluctuating pollutant concentrations?
Journal name Environmental Science and Technology   Check publisher's open access policy
ISSN 0013-936X
Publication date 2009-03-01
Sub-type Article (original research)
DOI 10.1021/es8021446
Volume 43
Issue 5
Start page 1443
End page 1448
Total pages 6
Editor Jerald Schnoor
Place of publication Washington, D.C. USA
Publisher American Chemical Society
Collection year 2010
Language eng
Subject C1
090799 Environmental Engineering not elsewhere classified
050206 Environmental Monitoring
960699 Environmental and Natural Resource Evaluation not elsewhere classified
Abstract Many environments are subject to periodic fluctuations in pollutant concentrations. Passive samplers, which can provide time weighted average concentrations integrated over the period of deployment, are ideally suited as monitoring tools for these environments. However, the potential for fluctuating concentrations to limit the integrative period of sampling needs to be investigated before sampling data from these environments can be interpreted with confidence. In this study, Chemcatchers using SDB-RPS Empore disks as the sorbent phase were exposed to herbicides for 28 days in a calibration chamber. A pulsed event of 10-fold greater concentrations was introduced on day 5 and returned to background concentrations over a period of 3 days, Observed uptake was compared with that predicted by a first order uptake model and by the reduced form of this model describing a strictly integrative response for samplers deployed with two surfaces exposed (two-sided naked), with one surface exposed (one-sided naked) and with a polyethersulfone membrane. Membrane covered samplers predicted time weighted average water concentrations within a factor 0.7-1.2 after 28 days exposure, while one- and two-sided naked samplers under predicted the average by a factor 1.9-2.2 and 2,4-3.2, respectively. First order modeling predicted uptake in membrane covered and one-sided naked samplers and was therefore applied to predict sampler response to several fluctuating concentration event scenarios.
Keyword Semipermeable-membrane Devices
Organic pollutants
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
National Research Centre for Environmental Toxicology Publications
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Citation counts: TR Web of Science Citation Count  Cited 35 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 37 times in Scopus Article | Citations
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Created: Wed, 17 Jun 2009, 16:05:09 EST by Professor Jochen Mueller on behalf of National Res Centre For Environmental Toxicology