Confirmation techniques for triazine herbicides by gas chromatography with electrolytic conductivity detection

1974 ◽  
Vol 22 (6) ◽  
pp. 936-938 ◽  
Author(s):  
James F. Lawrence
Keyword(s):  
Gas Chromatography ◽  
Electrolytic Conductivity ◽  
Triazine Herbicides ◽  
Conductivity Detection

scholarly journals Use of Solid-Phase Extraction Disks for Analysis of Moderately Polar and Nonpolar Pesticides in High-Moisture Foods

1996 ◽  
Vol 79 (4) ◽  
pp. 936-940 ◽  
Author(s):  
John A Casanova
Keyword(s):  
Gas Chromatography ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Liquid Extraction ◽  
Electrolytic Conductivity ◽  
Phase Extraction ◽  
High Moisture ◽  
Conductivity Detection ◽  
Organochlorinated Pesticides ◽  
Liquid Liquid Extraction

Abstract This study investigated the use of solid-phase extraction (SPE) disks in analysis of high-moisture (<2% fat) foods for organophosphorus and organochlorinated pesticides with low (<25 mg/mL) water solubilities. Five representative foods were each spiked with one of 18 pesticides at 2 levels. Gas chromatography with flame photometric and electrolytic conductivity detection was used to quantitate organophosphates and organochlorinated pesticides, respectively. Essentially complete recoveries (≥80%) suggest that use of SPE disks can complement traditional liquid-liquid extraction procedures.

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