Pesticide residues in agricultural production after the application of pesticides, a portion of the pesticide residue directly or indirectly in grains, vegetables, fruits, livestock products, aquatic products, as well as the phenomenon of soil and water; pesticide residues are pesticides after the use of a period of time is not decomposed and remain in the organisms, harvested, soil, water, the atmosphere of trace pesticide protomers, toxic metabolites, degradation, and the impurities in the general term.

Pesticide residue detector test method classification are:

1, test paper method

2, enzyme inhibition rate method

3, enzyme immunoassay

4, thin-layer chromatography

5, spectroscopy

6, chromatography

The fastest pesticide residue detection method

1, Paper method: CSY-N12 portable pesticide residue tester is based on the national standard method --- quick test card method (paper method) and specially designed instruments. Mainly used for fruits, vegetables, tea, food, water and soil in the organophosphorus and carbamate pesticides in the rapid detection, especially for food safety testing organizations at all levels of on-site law enforcement use, portable pesticide residue detector can also be used for fruit, vegetable and tea production bases and farmers wholesale sales market on-site testing, restaurants, canteens, families, fruit and vegetable processing before the security of the quick test. www.csy17.net/ products-zh-1850.html

Instrument detection principle: the use of single-chip microcomputer control of temperature and time and other parameters, with the biochemical reaction of vegetables, fruits and other foodstuffs, organophosphorus and carbamate pesticides semi-quantitative detection.

Biochemical reaction principle: the cholinesterase (white tablet) in the quick test card can catalyze the hydrolysis of indophenol acetate (red tablet) to acetic acid and indophenol, due to the organophosphorus and carbamate pesticides have an inhibitory effect on the activity of cholinesterase, so that the catalytic hydrolysis of the color changes. Therefore, according to the resultant color shade, you can judge the residue of organophosphorus or carbamate pesticides in the sample.