Journal
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
Volume 30, Issue 6, Pages 1412-1420Publisher
WILEY
DOI: 10.1002/etc.514
Keywords
POCIS; Passive samplers; Pesticides; Pharmaceuticals; Steroid hormones
Categories
Funding
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [966850] Funding Source: National Science Foundation
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Polar organic chemical integrative samplers (POCIS) are useful in monitoring for a wide range of chemicals in aquatic systems; however, a lack of available uptake rate data for compounds of environmental interest is one limitation in the application of these samplers to environmental studies. In this study, laboratory calibration experiments were conducted with POCIS for 65 compounds at 25 degrees C under flowing conditions to determine chemical-specific uptake rates (R-s). Experimental uptake rates measured in this study ranged from 0.034 to 1.33 L/d, and uptake rates were determined for 36 compounds with no previously reported values. Experimentally determined uptake rates were applied to data obtained from POCIS samplers deployed downstream of three wastewater treatment plant (WWTP) effluent discharges and in four surface waters influenced by agricultural runoff. Time-weighted average concentrations for atrazine and metolachlor determined using uptake rates generated in this study compare well with results from composited grab sampling previously conducted in agricultural watersheds in Nebraska, USA. Environ. Toxicol. Chem. 2011;30:1412-1420. (C) 2011 SETAC
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