Abstract
In order to find a fast, high efficient determination method of Organophosphorus Pesticides (OPPs) residue because OPPs widely used in crops pest control fields in China are causing fearful risks for environment as well as animals and human health, traditional and advanced determination methods were discussed in the study. Based on the spectrum analysis technology combined colorimetric OPPs residue detection experiments in leafy vegetables showed that the absorbance of color reaction between OPPs residues and suitable colorimetric reagents can be distinguished in ppm level of OPPs residues. The detection limit of chlorpyrifos after color reaction with 0.5% Pbcl<sub>2</sub> in acetic acid solution is 0.5 ppm. The conclusion was drawn that the detection technologies were diversified, however, a simple, efficient, rapid and nondestructive detection method is lacking and the spectrum analysis technology combined colorimetric can be a new fast and efficient determination method in the future.
Highlights
Organophosphorus Pesticides (OPPs) were invented at the end of 1930s as the second generation synthetic pesticides with characteristics of broad spectrum, high efficiency, many varieties and short residual toxicity period
If OPPs residues in fruits and vegetables or in other environment enter into organism, most of them have inhibitory action on cholinesterase in organism, that is to say, the cholinesterase will accumulate because of its losing ability to decompose acetylcholine, will make nerve function disorder to lead to the body damage
The method can provide us help for seeking a fast, efficient detection method
Summary
Organophosphorus Pesticides (OPPs) were invented at the end of 1930s as the second generation synthetic pesticides with characteristics of broad spectrum, high efficiency, many varieties and short residual toxicity period. There are mainly methamidophos, parathion-methyl, chlorpyrifos, dimethoate, omethoate, Malathion, chlordimeform, Furadan, etc., often sprayed on fruits and vegetables in China. If OPPs residues in fruits and vegetables or in other environment enter into organism, most of them have inhibitory action on cholinesterase in organism, that is to say, the cholinesterase will accumulate because of its losing ability to decompose acetylcholine, will make nerve function disorder to lead to the body damage. Advantages and disadvantages of traditional and advanced detection methods are studied in detail in the study and it reflects the diversification of detection means and the interdisciplinary application of advanced technologies in order to seek a fast, efficient detection method for OPPs residues. The method can provide us help for seeking a fast, efficient detection method
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