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

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...

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Bibliographic Details
Published in:Journal of Chromatography A 2008-11, Vol.1210 (1), p.8-18
Main Authors: Smalling, Kelly L., Kuivila, Kathryn M.
Format: Article
Language:English
Subjects:
Analysis methods
Analytical chemistry
Applied sciences
Chemistry
Chromatographic methods and physical methods associated with chromatography
chromatography
Chromatography, Gel - methods
Current-use pesticides
Environmental Pollutants - analysis
Exact sciences and technology
extraction
Fungicides
Gas chromatographic methods
gas chromatography
Gas Chromatography-Mass Spectrometry - methods
gel permeation chromatography
Geologic Sediments - chemistry
Hydrocarbons, Chlorinated - analysis
legacy pesticides
mass spectrometry
microwave treatment
Microwave-assisted extraction
Microwaves
multiresidue analysis
Organochlorine pesticides
pesticide residues
Pesticide Residues - analysis
Pesticides - analysis
Pollution
sediment contamination
Sediments
Soil and sediments pollution
solid phase extraction
Solid Phase Extraction - methods
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Summary: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 μg/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.
ISSN:0021-9673
DOI:10.1016/j.chroma.2008.09.023