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Method capable of simultaneously detecting varieties of pesticide residues in aquatic product

A technology for aquatic products and pesticide residues, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as repeatability, low detection efficiency, and cumbersome process, so as to shorten the pre-extraction processing time, reduce the detection cost, good repeatability

Inactive Publication Date: 2015-09-23
FOOD INSPECTION CENT OF CIQ SHENZHEN +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, to provide a method capable of simultaneously detecting multiple types of drug residues in aquatic products, aiming to solve the problems of high cost, cumbersome process, and low detection efficiency in existing methods for detecting drug residues. Technical issues such as high sensitivity and repeatability need to be improved

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  • Method capable of simultaneously detecting varieties of pesticide residues in aquatic product
  • Method capable of simultaneously detecting varieties of pesticide residues in aquatic product
  • Method capable of simultaneously detecting varieties of pesticide residues in aquatic product

Examples

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Embodiment 1

[0064] This example provides a method based on the improved QuEChERS method combined with LC-MS / MS that can simultaneously detect multiple types of drug residues in aquatic products. The instruments and reagents involved in this method are as follows:

[0065] Agilent1200 liquid chromatograph coupled with API4000 quadrupole mass spectrometer, vortex oscillator (Thermo M376), reciprocating oscillator (Yamato SA300), high-speed centrifuge (Sigma 3K15), ultrasonic cleaner (Elma E70H), nitrogen blowing instrument ( Caliper), used acetonitrile, formic acid, acetic acid are chromatographically pure, NaAc and MgSO 4 All are analytically pure.

[0066] In this embodiment, the method for simultaneously detecting multiple types of drug residues in aquatic products comprises the following steps:

[0067] (1) Preparation: collect and select 500g representative fish samples, fully pulverize and homogenize in a high-speed homogenizer for subsequent use;

[0068] (2) Extraction: Weigh 5g ...

Embodiment 2

[0091] This example provides a method based on the improved QuEChERS method combined with LC-MS / MS that can simultaneously detect multiple types of drug residues in aquatic products. The instruments and reagents involved in this method are the same as those in Example 1.

[0092] In this embodiment, the method for simultaneously detecting multiple types of drug residues in aquatic products comprises the following steps:

[0093] (1) Preparation: collect shrimp meat samples and select 500g representative samples, fully pulverize and homogenize in a high-speed homogenizer for subsequent use;

[0094] (2) Extraction: Weigh 5g of shrimp meat sample (accurate to 0.01g), put it in a 50mL stoppered centrifuge tube, add 20mL of 1% acetic acid acetonitrile solvent, add 1g of NaAc and 1g of anhydrous MgSO at the same time, vortex and mix at high speed, Extract by horizontal shaking for 10 minutes, centrifuge at 5500r / min for 5 minutes;

[0095] (3) Purification: Transfer 20 mL of the ...

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Abstract

The invention provides a method capable of simultaneously detecting varieties of pesticide residues in an aquatic product. The method capable of simultaneously detecting varieties of pesticide residues in the aquatic product comprises the following steps of extracting varieties of pesticide residues in the to-be-detected aquatic product, purifying a pesticide residue-containing extract, performing qualitative and quantitative analysis on the purifying liquid of the pesticide residue-containing extract through LC-MS / MS (liquid chromatography-mass spectrography) / (mass spectrography) and the like. According to the method capable of simultaneously detecting varieties of pesticide residues in the aquatic product, the function of separating and detecting all the pesticide residues by one step is realized, so that the efficiency of a sample pretreatment and analysis process is improved, the flexibility is high, and the detection cost is reduced to one tenth of the detection cost of the conventional method.

Description

technical field [0001] The invention belongs to the technical field of pesticide residue detection, and in particular relates to a method capable of simultaneously detecting multiple types of drug residues in aquatic products. Background technique [0002] my country is a big producer of agricultural products, as well as a big producer and user of pesticides. Since 2010, the total production of aquatic products in my country has leapt to the first place in the world, and the total consumption of freshwater aquatic products accounts for more than 50% of the total consumption of aquatic products. However, with the development of large-scale agricultural production, the problem of pesticide residues in farmed aquatic products has become increasingly prominent, and has become a hot food safety issue of international and domestic concern. [0003] Pesticide residues in aquatic products usually come from two sources. One is the application of drugs during the breeding process to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/14
Inventor 张毅韩瑞阳肖锋蓝芳林黎沈金灿肖陈贵华红慧
Owner FOOD INSPECTION CENT OF CIQ SHENZHEN
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