A rapidly equilibrating, thin film, passive water sampler for organic contaminants; characterization and field testing期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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A rapidly equilibrating, thin film, passive water sampler for organic contaminants; characterization and field testing

Authors:	St George Tiffany Vlahos Penny Harner Tom Helm Paul Wilford Bryony

Institution:	^a Department of Chemistry, University of Connecticut, 55 Eagleville Road, Storrs, CT 06269, USA ^b Department of Marine Science, University of Connecticut, 1080 Shennecossett Road, Groton, CT 06340, USA ^c Science and Technology Branch, Environment Canada, 4905 Dufferin Street, Toronto, Ontario M3H 5T4, Canada ^d Environmental Monitoring & Reporting Branch, Ontario Ministry of the Environment, 125 Resources Rd, Toronto, Ontario M9P 3V6, Canada ^e Department of Science, United States Coast Guard Academy, 27 Mohegan Ave., New London, CT 06320, USA

Abstract:	Improving methods for assessing the spatial and temporal resolution of organic compound concentrations in marine environments is important to the sustainable management of our coastal systems. Here we evaluate the use of ethylene vinyl acetate (EVA) as a candidate polymer for thin-film passive sampling in waters of marine environments. Log K_EVA−W partition coefficients correlate well (r² = 0.87) with Log K_OW values for selected pesticides and polychlorinated biphenyls (PCBs) where Log K_EVA−W = 1.04 Log K_OW + 0.22. EVA is a suitable polymer for passive sampling due to both its high affinity for organic compounds and its ease of coating at sub-micron film thicknesses on various substrates. Twelve-day field deployments were effective in detecting target compounds with good precision making EVA a potential multi-media fugacity meter.

Keywords:	Passive sampler Ethylene vinyl acetate Pesticides PCBs Chemical monitoring Marine
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