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Solid‐phase extraction of carbaryl and malathion from pond and well water
Author(s) -
Beyers Daniel W.,
Carlson Clarence A.,
Tessari John D.
Publication year - 1991
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620101107
Subject(s) - malathion , carbaryl , extraction (chemistry) , solid phase extraction , chromatography , chemistry , tap water , carbamate , pesticide , environmental engineering , environmental science , biology , ecology , organic chemistry
An analytical method was developed using C 8 solid‐phase extraction columns to extract carbaryl and malathion from well and pond water. Mean percent recovery over a concentration range of 1 μg/L to 10,000 μg/L was consistently between 80 and 100. Well‐water samples fortified with carbaryl and malathion were solid‐phase extracted, and analytes were stored on solid‐phase extraction columns at —4°C for 30 d without significant decomposition. The method was field‐tested by collecting pond water before and after an application of malathion. It provided significantly higher recovery of malathion than a liquid‐liquid extraction procedure.