Detection method for determining various pesticide residues in non-fatty fruits and vegetables

A technology for pesticide residues and detection methods, applied in the field of pesticide residue detection, can solve problems such as inability to achieve unified standards, and achieve the effect of improving extraction efficiency

Inactive Publication Date: 2019-11-29
山东陆桥检测技术股份有限公司
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Problems solved by technology

[0005] According to the existing national standards and literature, there are many pesticide residue detection methods in agricultural products, and it is impossible to achieve a unified standard. For example, avermectin has only independent detection methods in the national standard. Therefore, it is necessary to improve the detection technology of various pesticides. In order to achieve the purpose of simultaneously detecting multiple pesticides with one method

Method used

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  • Detection method for determining various pesticide residues in non-fatty fruits and vegetables
  • Detection method for determining various pesticide residues in non-fatty fruits and vegetables
  • Detection method for determining various pesticide residues in non-fatty fruits and vegetables

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Embodiment Construction

[0036] Experimental reagents: acetonitrile: chromatographically pure; n-hexane: chromatographically pure; formic acid: chromatographically pure; sodium chloride: analytically pure; toluene: chromatographically pure; acetone: chromatographically pure; methylene chloride: chromatographically pure.

[0037] The equipment used in the present invention includes: liquid chromatography tandem mass spectrometer LC-20AD+LCMS-8040 (Shimadzu), electronic balance BSA224S (Sartorius), ultrasonic machine SB-5200-DTD (Xinshi), vortex Mixer VORTEX-5 (Qiling Bell), Nitrogen Blowing Apparatus WD-12 (Aosheng), High Speed ​​Cold Ice Centrifuge TGL-20bR (Anting), Solid Phase Extraction Apparatus 420-1902-00FK (07532-45) ( Cole-Paymer).

[0038] The method for detecting multiple pesticide residues in non-fat fruits and vegetables includes the following steps:

[0039] (1) Sample extraction: First weigh 20g of fruit and vegetable samples, then add 20mL of compound extractant and homogenize for 5min; after...

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Abstract

The invention belongs to the technical field of pesticide residue detection, and particularly relates to a detection method for determining various pesticide residues in non-fatty fruits and vegetables. The detection method for determining various pesticide residues in the non-fatty fruits and vegetables comprises the following steps: (1) extracting a sample; (2) purifying; (3) preparing a pesticide mixed standard; and (4) detecting. The detection method can effectively separate 53 pesticides in the non-fatty fruits and vegetables within 20 minutes, has a good correlation coefficient that R<2>is larger than 0.999 within a linear range, is simple to operate, quick to extract, high in accuracy and strong in repeatability, and is suitable for the confirmation analysis of the residual quantity of various pesticides in the non-fatty fruits and vegetables.

Description

Technical field [0001] The invention belongs to the technical field of pesticide residue detection, and specifically relates to a detection method for determining multiple pesticide residues in non-fat fruits and vegetables. Background technique [0002] With the development of agricultural industrialization, the use of foreign substances such as pesticides, antibiotics and hormones has become more and more widespread. Unreasonable use of these substances will inevitably lead to excessive pesticide residues in agricultural products, affect the health and safety of humans and animals, cause diseases, lead to developmental abnormalities, and even directly lead to poisoning and death. The problem of pesticide residues has gradually emerged in front of people. Controlling the amount of pesticides used or removing pesticides is an urgent problem to be solved. [0003] Vegetables and fruits are one of the most important edible agricultural products in the world. However, most fruits and...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/34
CPCG01N30/02G01N30/06G01N30/34G01N2030/027G01N2030/062
Inventor 张晓丽毕文胜黄小敏
Owner 山东陆桥检测技术股份有限公司
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