Recently, the media has continuously exposed that vegetable farmers use state-prohibited pesticides to keep fruits and vegetables fresh or excessively apply pesticides to prevent pests. For example, farmers in a certain place in Shandong used "Liu Liufen" and "dichlorvos" to deworm and keep ginger fresh; the domestically tested tea and related tea bags exceeded the standard for the highly toxic pesticide "Metoprol".
As early as the 1960s, the "six-six powder" was an organochlorine pesticide that was explicitly prohibited by the state from being produced, sold and used. After entering the body, it mainly accumulates in the central nervous system and adipose tissue, stimulates brain movement and cerebellum, and also affects the autonomic nervous system and peripheral nerves through the cortex. It affects the oxidative phosphorylation of cells in the organs, causing organ nutritional disorders to occur. Transgender necrosis. It can induce liver cell microsomal oxidase, affect endocrine activity, and inhibit ATPase. As an organophosphorus pesticide, "dichlorvos" is strictly restricted by the state due to its highly toxic nature. The pesticide generally requires that it be stopped seven days before the vegetables are harvested, and can be absorbed through the skin to cause poisoning. "Metoprolol" belongs to carbamate pesticides. It will cause poisoning for a long time in excess of the standard environment. The symptoms are: salivation, tearing, blurred vision, tremor, convulsions, confusion, coma, nausea, vomiting, diarrhea, abdominal pain, and finally respiratory failure And die.
In response to the harmfulness of organochlorine, organophosphorus and carbamate pesticides, the Chinese government has successively issued a series of national standards to strictly test and limit:
"GB 2763-2005 Maximum Residue Limits of Pesticides in Foods" limits "Dichlorvos" pesticides to not exceed 0.2ppm in fruits and vegetables; "Liu Liufen" pesticides must not exceed 0.05ppm in fruits and vegetables; Use this type of pesticide.
"GB / T 5009.19-2008 Determination of multi-component residues of organochlorine pesticides in food" recommends the use of GC-ECD for the detection of "six or six powder" organochlorine pesticides.
"GB / T 5009.20-2003 Determination of Organophosphorus Pesticide Residues in Food" recommends the use of GC-FPD for the detection of "Dichlorvos" organophosphorus pesticides.
PerkinElmer, as a global leading technology supplier that has long been concerned about human health and environmental health, has been committed to providing users with excellent performance equipment and comprehensive solutions. In response to the food safety incidents of pesticide residues that are constantly exposed:
Based on PerkinElmer gas chromatography Clarus instrument platform, develop SOP for organic chlorine and organophosphorus pesticide residue detection solution;
Based on the liquid mass spectrometry Flexar SQ300 platform, developed a detection solution SOP for carbamate pesticide residues;
Based on the gas mass spectrometry Clarus SQ 8 platform, a rapid detection scheme SOP for detecting 86 pesticide residues was developed.
It is believed that PerkinElmer's complete solution for pesticide residues in food will help national laboratories at all levels meet the requirements of pesticide residue testing and improve the level of pesticide residue testing.
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