• Strona główna
  • Wyniki wyszukiwania
  • Simultaneous quantification of insecticides including carbaryl in drinking water by gas chromatography using dual electron-capture and nitrogen-phosphorus detection.

Simultaneous quantification of insecticides including carbaryl in drinking water by gas chromatography using dual electron-capture and nitrogen-phosphorus detection.

Journal of chromatography. A (1997-05-09)
Y S Oh-Shin, M Ko, H S Shin
ABSTRAKT

A rapid and simple gas chromatographic method for the simultaneous determination of malathion, parathion, fenitrothion, diazinon and carbaryl in drinking water is presented. A fused-silica SE-54 column was used for the separation of the insecticides and was split into two specific detectors; electron-capture and nitrogen-phosphorus detectors by using column switching. A water sample was extracted with methylene chloride. The organic phase was evaporated and the residue was derivatized with pentafluoropropionic acid anhydride. The detection limit was below 0.1 ng/ml and the calibration curves showed good linearity with r = 0.998 approximately 1.000. The method was sensitive, reproducible and simple enough to permit the reliable routine analysis of the pesticides in drinking water.

MATERIAŁY
Numer produktu
Marka
Opis produktu

Sigma-Aldrich
Pentafluoropropionic anhydride, 99%
Supelco
Pentafluoropropionic anhydride, for GC derivatization, LiChropur, 99%
Sigma-Aldrich
Pentafluoropropionic anhydride, purum, ≥97.0% (GC)