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USGS · 70032238

Multi-residue method for the analysis of 85 current-use and legacy pesticides in bed and suspended sediments

K.L. Smalling·K.M. Kuivila
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Abstract

A multi-residue method was developed for the simultaneous determination of 85 current-use and legacy organochlorine pesticides in a single sediment sample. After microwave-assisted extraction, clean-up of samples was optimized using gel permeation chromatography and either stacked carbon and alumina solid-phase extraction cartridges or a deactivated Florisil column. Analytes were determined by gas chromatography with ion-trap mass spectrometry and electron capture detection. Method detection limits ranged from 0.6 to 8.9 ??g/kg dry weight. Bed and suspended sediments from a variety of locations were analyzed to validate the method and 29 pesticides, including at least 1 from every class, were detected.

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Journal of Chromatography AArticle

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K.L. Smalling, K.M. Kuivila. 2008. Multi-residue method for the analysis of 85 current-use and legacy pesticides in bed and suspended sediments. https://doi.org/10.1016/j.chroma.2008.09.023

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