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- Title
Evaluation of Desulfuration Methods for Pyrethroid, Organophosphate, and Organochlorine Pesticides in Sediment with High Sulfur Content.
- Authors
You, J.; Lydy, M.J.
- Abstract
This study investigated different cleanup procedures to eliminate sulfur interference from sediments from a reclaimed mining site in Sparta, Illinois. Sonication extraction with activated copper powder was the most effective method to eliminate elemental sulfur. Extracts were then cleaned with a Florisil column before pyrethroid, organophosphate, and organochlorine pesticides were determined using gas chromatography with electron-capture detection. The method detection limits ranged from 0.03 to 0.68 µg/kg dry sediment. Recoveries for spiked samples were from 82.2% to 132.7% with relative standard deviations < 15%. Fifty-four sediment samples collected from 15 lakes and 1 stream in the proposed Illinois National Guard Armory were analyzed using the desulfuration procedure. Of the 26 target pesticides analyzed in sediment, 20 were detected above the detection threshold of 1 µg/kg. DDT was detected most frequently (found at 50% of the sampling sites), whereas permethrin was found at the greatest concentration.
- Subjects
SPARTA (Ill.); ILLINOIS; UNITED States; PESTICIDES; PYRETHROIDS; ORGANOCHLORINE compounds; SULFUR; SEDIMENTS
- Publication
Archives of Environmental Contamination & Toxicology, 2004, Vol 47, Issue 2, p148
- ISSN
0090-4341
- Publication type
Article
- DOI
10.1007/s00244-003-3166-7