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Detection method of organochlorine pesticides in mitten crab roe

A technology of Chinese mitten crab and a detection method, which is applied in the field of analytical chemistry, can solve problems such as excess oil and the like, and achieve the effects of expanding the detection range, simple operation and convenient use.

Active Publication Date: 2020-12-29
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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Problems solved by technology

[0005] Technical problem to be solved: In order to overcome the deficiencies in the prior art and obtain a high-sensitivity, high-accuracy qualitative and quantitative detection method for samples with a lot of oil and complex matrix, the invention provides organic Detection method of chlorine pesticide content

Method used

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  • Detection method of organochlorine pesticides in mitten crab roe
  • Detection method of organochlorine pesticides in mitten crab roe

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Embodiment 1

[0034] The detection method of organochlorine pesticide content in Chinese mitten crab roe, described method comprises the following steps:

[0035] Step 1. Preparation of standard curve: Accurately measure the mixed standard solution of organochlorine pesticides, dilute with chromatographically pure isooctane to prepare a concentration of 1 μg L -1 , 5μg·L -1 , 20μg·L -1 , 100μg·L -1 , 150μg·L -1 The gradient mixed standard working solution of the indicative polychlorinated biphenyls and organochlorine pesticides, the standard working solution is detected by a gas chromatograph, and the corresponding area data of each substance is obtained as the ordinate;

[0036] Step 2, detection: process the sample to be tested, detect the processed sample with a gas chromatograph, and record the obtained measured data;

[0037] Step 3, Calculation: Substitute the measured results obtained in Step 2 into the standard curve drawn in Step 1, and convert the obtained calculation results ...

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Abstract

The invention discloses a detection method of the content of organo-chlorine pesticides in crab cream of a Chinese mitten crab. The method comprises a preparation step of a standard curve, a gas chromatography detection step and a result calculation step. Compared with the prior art, the detection method disclosed by the invention has the following advantages: (1) the detection method of the content of the organo-chlorine pesticides in the crab cream of the Chinese mitten crab realizes high-sensitivity and high-precision qualitative and quantitative detection for a sample with much grease anda complicated matrix; (2) the method disclosed by the invention is easy and convenient to operate, low in interference and convenient to use and can effectively detect the organo-chlorine pesticides in 11; (3) the detection limit of the method is 0.04 to 0.2 [mu]g / kg, the detection range is enlarged, and the practicability is high; (4) the method has general applicability and can lock and extracta target compound from a special matrix to remove interference of other impurities.

Description

technical field [0001] The invention belongs to the field of analytical chemistry and relates to a method for controlling the quality and safety of aquatic products, in particular to a method for detecting the content of organochlorine pesticides in Chinese mitten crab roe. Background technique [0002] The Chinese mitten crab is mainly distributed in lakes along the north and south coasts of my country, and is the most famous economic crab in China. Due to the continuous improvement of the market demand for Chinese mitten crabs, various places are also competing to start artificial breeding of them. However, with the change of the environment, the water area and the breeding environment are threatened by various pesticide residues. As the part of crab roe with the highest nutritional value of Chinese mitten crab, due to its high fat content, it has become the part where many fat-soluble organic pollutants are most likely to accumulate. [0003] Organochlorine pesticides h...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/062
Inventor 宋超张敬卫张聪陈家长孟顺龙范立民郑尧胡庚东裘丽萍
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI