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Due to the large number of pesticides and unreasonable use of the pesticide residues , especially pesticide residues in food and drug , has drawn increasing attention . , Establishment of conventional pesticides project the residual system detection method has become a very important means of trade protection , improve the level of detection technology , will have an important role in ensuring China 's fruit and vegetable exports and control imports of fruit pesticide residues , but also to ensure that our consumers in fruit vegetable consumption secure the necessary measures . In addition, pesticide residues are also important factors to affect the traditional Chinese medicinal quality , largely restricts the export of traditional Chinese medicine , it is also necessary to establish a fast and accurate detection of pesticide residues in herbal medicines . Article select our commonly used in the production process of the fruits and vegetables , 107 varieties of pesticides in international trade has set residual limited requirements as the object of study , the use of gas chromatography - mass spectrometry method , the establishment of a standard MS spectra Gallery sample extraction, purification method to study screening , extraction efficiency , and meet the requirements of the recovery and instrument detection purifying effect ; optimized GC-MS and GC-ECD and GC -NPD , GC -FPD detection conditions . The experiments show that : the method add recoveries and precision the experimental countries passage of pesticide residue analysis provisions , the minimum detection limit of each pesticide is in line the MRL standards prescribed by the World Health Organization , and also to meet the maximum residue limits require countries to develop . 107 pesticide application the same extract , purify , GC-MS determination procedures , reduce test time , improve the detection efficiency , reduce the cost of inspection , with the ability to rapid screening and confirmatory accurate . This paper also studied capillary gas chromatographic analysis of the seven kinds of Chinese medicine in the nine kinds of organochlorine pesticide residues of BHC and DDT four isomers , PCNB residues were determined . The experiments show that : Add recoveries and precision experiments of the method is also in line with the provisions of the pesticide residue analysis , can be used to achieve fast and accurate detection of pesticide residues in Chinese herbal medicines .
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