S. Magdic et Jb. Pawliszyn, ANALYSIS OF ORGANOCHLORINE PESTICIDES USING SOLID-PHASE MICROEXTRACTION, Journal of chromatography, 723(1), 1996, pp. 111-122
Citations number
23
Categorie Soggetti
Chemistry Analytical","Biochemical Research Methods
A solid-phase microextraction (SPME) procedure has been developed to s
uccessfully extract eighteen chlorine-containing pesticides from water
. A fused-silica fiber coated with a non-polar polydimethylsiloxane st
ationary phase was used to extract the analytes from water samples ove
r a concentration range of 0.001 to 100 ng/ml. Limits of detection at
a ng/l level were achieved with GC and flame ionization detection, and
improved to sub ng/l levels using CC-MS, or CC with electron-capture
detection (ECD). The reproducibility of the measurements between fiber
s was found to be very good, with precision typically below 20% R.S.D.
within a single fiber. Qualitative analysis was performed on river an
d lake samples from Southern Ontario. Samples from the Arctic region o
f Canada were analyzed quantitatively using a dual ECD system.