Recently, a method for detecting organochlorine pesticides in crab yellows of Eriocheir sinensis was invented by Associate Researcher Song Chao from the Freshwater Fisheries Research Center of the Chinese Academy of Fishery Sciences.”Obtained national invention patent authorization, patent number:ZL2018104784177.
Chinese mitten crab is the most prestigious economic crab in my country. As the environment changes, waters and breeding environments are threatened by various pesticide residues. The crab yellow part of the Chinese mitten crab with the highest nutritional value, due to its high fat content, becomes the most easily accumulated part of many fat-soluble organic pollution. Organochlorine pesticides have always been a persistent pollutant that has attracted much attention. Although most of them have been restricted or even banned, the residues in water bodies and sediments will still accumulate in aquatic organisms. The growth environment of Eriocheir sinensis also faces this problem, so it is necessary to strengthen the detection of organochlorine pesticides in Eriocheir sinensis, especially its crab yellow part.
At present, there have been many reports on the detection methods of organochlorine pesticides, mainly using chromatographic instruments to detect them. However, for samples with many oils such as crab roe and a complex matrix, the existing processing and detection methods are difficult to meet the requirements. If you want to improve the sensitivity of detection, there are higher requirements for experimental equipment and laboratory conditions. In order to be able to detect the current status of organochlorine pesticide residues in crab yellow more accurately, the present invention develops a convenient and effective extraction and purification method, and uses corresponding instrument detection conditions to accurately detect the residues of organochlorine pesticides in crab yellow. Qualitative and quantitative.