Determination of Organophosphorus Insecticides in Water by C-18 Solid Phase Extraction and Quantitative TLC

Abstract

A simple, rapid, and sensitive method for the determination of sarafloxacin (A-55620) in fish serum using enrofloxacin as internal standard is described. The serum sample and internal standard enrofloxacin are loaded onto the extraction column packed with C2 sorbent material. The column is rinsed and then eluted. The detection limit is 5 ng/g, the recovery rate varying from 92 to 100 % .