Factors Influencing the Determination of Enzymatic Inhibition Rate of Pesticide Residues on a Rapid Analyzer

Abstract

Abstract: A wide variety of analytical instruments have been recently developed for the rapid determination of pesticides using the principle of enzymatic inhibition. In this study, a GDYN-1096SC type rapid pesticide residue analyzer was selected to determine 8 kinds of pesticides such as methamidophos, prarathion, dichlorvos, omethoate, chlorpyrifos, carbaryl, methomyl and carbofuran with acetylcholinesteras or wheat esterase, two enzymes from different sources based on measurements of repeatability, stability, absorbance linearity and channel consistency of the instrument. When various technical parameters met the requirements for testing, the analyzer could accurately determine pesticides. Enzymes from different sources, however, were the main factors that influence the determination of enzymatic inhibition rate of pesticide.

Key words: enzyme inhibition, pesticide residue, rapid pesticide residue analyzer, acetylcholinesterase, wheat esterase

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Factors Influencing the Determination of Enzymatic Inhibition Rate of Pesticide Residues on a Rapid Analyzer

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