Detection method of various pesticides in fertilizer

Abstract

The invention provides a detection method of various pesticides in a fertilizer. The detection method comprises the following steps of: 1) dissolving a fertilizer sample, filtering and obtaining filtrate; 2) detecting the filtrate by using a liquid chromatography-tandem mass spectrometry method; and 3) detecting contents of the pesticides in the fertilizer sample by using an external standard method. The method disclosed by the invention can perform qualitative and quantitative determination on the various pesticides in the fertilizer simultaneously, including determination of plant growth regulators and insecticides to provide effective control and detection means for the environmental protection and food safety. According to the invention, the instrument detection limits of diethyl aminoethyl hexanoate, betaine, chlormequat, avermectin and forchlorfenuron all can reach 0.01mg / L, the detection limits of 4-sodium nitrophenolate and 5-nitroguaiacol sodium salt can reach 0.01mg / L, and the detection limit of sodium naphthalene acetate can reach 0.025mg / L, and the detection limits of 2-sodium nitrophenolate and gibberellic acid can reach 0.1mg / L. The method disclosed by the invention is low in detection limit and accurate in results, can detect a variety of pesticides once, and fast and high-efficient.

Description

technical field [0001] The invention belongs to the field of testing with the help of physical and chemical properties of materials, in particular to a method for detecting pesticides in fertilizers. Background technique [0002] Pesticides refer to agents used in agriculture to control diseases and insect pests, regulate plant growth, and kill weeds. Plant growth regulators are a class of pesticides used to regulate plant growth and development, including synthetic compounds and natural plant hormones extracted from organisms. Used in agricultural production, it can effectively regulate the growth process of crops, achieve stable and increased production, improve quality, and enhance crop resistance. Pesticides are mainly used to control agricultural pests and urban sanitation pests. In the 20th century, with the rapid development of agriculture, pesticides greatly increased agricultural output. However, almost all pesticides seriously alter the ecosystem, most are harmfu...

AI Technical Summary

Problems solved by technology

However, if the use is not standardized, it may cause the crops to grow too fast, which will have a certain impact on the quality and taste of agricultural products; more importantly, for the production of agricultural products, the abuse of plant growth regulators will eventually endanger food safety.

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