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Detection method of endosulfan pesticide residue in animal milk

A detection method and technology for pesticide residues are applied in the detection field of endosulfan pesticide residues, which can solve the problems of inaccurate detection data and ineffective separation, and achieve the effects of optimized detection conditions, high recovery rate and good purification effect.

Inactive Publication Date: 2018-12-18
广州风行乳业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing national standard method detects β-endosulfan, α-endosulfan, endosulfan phosphate and other organochlorine pesticide residues specified in the national standard in raw milk at the same time. Influence, in which β-endosulfan and PP-DDD cannot be effectively separated, resulting in inaccurate detection data

Method used

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  • Detection method of endosulfan pesticide residue in animal milk
  • Detection method of endosulfan pesticide residue in animal milk
  • Detection method of endosulfan pesticide residue in animal milk

Examples

Experimental program
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Embodiment

[0099] 1 Determination method

[0100] Since endosulfan is oil-soluble and easily combined with fat, the method of fat extraction can be used to pre-treat the sample.

[0101] (1) Weigh 10.0g of fresh milk into a 100mL liposuction bottle or a 50mL colorimetric tube, add 2.0mL of concentrated ammonia water, shake well, shake in a constant temperature water bath at 65°C for 20 minutes, take it out and cool to room temperature.

[0102] (2) Put the liposuction bottle (or colorimetric tube) on the shaker, add 10mL absolute ethanol dropwise (add drop by drop to the sample, shake while adding); then add 25mL ether, shake vigorously for 2 minutes , stand still for 10 minutes or more, pour (or suck out) the upper layer extract into a 100mL beaker, repeat the extraction three times, and finally combine the extracts.

[0103] (3) Place the beaker containing the extract on an electric heating plate (temperature range is between 80°C and 90°C) and heat it. When the organic solvent is com...

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Abstract

The invention discloses a detection method of endosulfan pesticide residue in animal milk. The detection method of endosulfan pesticide residue in animal milk is to extract an endosulfan pesticide from a fresh milk sample by an extraction method, then purify and concentrate the obtained specimen, and then determine the residual amount of the endosulfan pesticide by gas chromatography detection. The detection method comprises the following steps: I, sample pretreatment; II, preparation of an endosulfan pesticide standard solution; and III, gas chromatography detection. Through improvement on pretreatment and optimization of detection conditions, accurate detection of the endosulfan pesticide in the animal milk is realized, and high recovery rate is achieved.

Description

technical field [0001] The invention relates to a method for detecting pesticide residues of endosulfan in animal milk. Background technique [0002] Food quality is closely related to national health and living standards. Since 2010, the state has put forward strict requirements on the inspection items of dairy products, and the inspection items of endosulfan and dieldrin have been added to the inspection of organochlorine pesticide residues in fresh milk. The main application of endosulfan is pesticide, and it is generally formulated into endosulfan EC. The scope of application of endosulfan includes: 1) broad-spectrum insecticidal and acaricidal, and has good control effect on fruit trees, vegetables, tea trees, cotton, soybeans, peanuts and other crop pests and mites; 2) contact killing, stomach poisoning and fumigation With multiple functions, it is difficult for pests to develop resistance; the insecticidal speed is fast, the insecticidal spectrum is wide, and it is ...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06
Inventor 陈胜楠周雨卉李颂群
Owner 广州风行乳业股份有限公司
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