Quantitative evaluation of laboratory uptake rates for pesticides, pharmaceuticals, and steroid hormones using POCIS

Shannon L. Bartelt-Hunt, Daniel D. Snow, Teyona Damon-Powell, Delshawn L. Brown, Gyanendra Prasai, Matthew Schwarz, Alan S. Kolok

Research output: Contribution to journalArticle

54 Scopus citations

Abstract

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°C under flowing conditions to determine chemical-specific uptake rates (Rs). Experimental uptake rates measured in this study ranged from 0.034 to 1.33L/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.

Original languageEnglish (US)
Pages (from-to)1412-1420
Number of pages9
JournalEnvironmental Toxicology and Chemistry
Volume30
Issue number6
DOIs
StatePublished - Jun 2011

Keywords

  • POCIS
  • Passive samplers
  • Pesticides
  • Pharmaceuticals
  • Steroid hormones

ASJC Scopus subject areas

  • Environmental Chemistry
  • Health, Toxicology and Mutagenesis

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