Organophosphorus and carbamate pesticides have unstable properties and are easily decomposed by external conditions after application. However, some of them are highly toxic. If applied to vegetables with short growth periods and continuous harvesting, it is difficult to avoid human and animal poisoning due to excessive residue levels. The rapid pesticide residue detector can detect the above two types of pesticide residues and determine whether the pesticide residues in fruits and vegetables meet the specified standards.

Pesticides enter food such as grains, vegetables, fruits, etc., causing food pollution and endangering human health. Due to the significant harm of pesticide residues to human and biological health, strict restrictions and management have been imposed on the application of pesticides, and regulations have been made on the limit of pesticide residues in food. The rapid pesticide residue detector is designed based on national standard methods and requirements such as the World Health Organization and the Food and Agriculture Organization's pesticide residue standards, and is used to detect pesticide residues in foods such as vegetables, fruits, tea, grains, and agricultural products.

The rapid pesticide residue detector is based on the principle of enzyme inhibition rate method to detect the residues of organophosphorus and carbamate pesticides. Under certain conditions, organophosphate and carbamate pesticides have inhibitory effects on the normal function of cholinesterase, and their inhibition rate is positively correlated with the concentration of the pesticide. Under normal circumstances, enzymes catalyze the hydrolysis of nerve conduction metabolites, which react with chromogenic agents to produce a yellow substance. The absorbance change over time is measured at 412nm to calculate the inhibition rate, which can be used to determine the presence of high-dose organophosphorus or carbamate pesticides in the sample.