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Ginseng is a traditional Chinese herbal medicines, with the continuous development of society, the quality of ginseng has drawn increasing attention. The excessive pesticide residues in ginseng, not only endanger the health of the people, but also affects the ginseng to enter the international market. Highly toxic organophosphorus pesticides are disabled after pyrethroid pesticides in an efficient, low toxicity and residue, etc. are widely used for pest control in ginseng, but because there is a certain kind of pesticide accumulation, some species have caused human abnormal, mutagenic effect. So pyrethroid pesticide residues in ginseng exports has become the main reason. Therefore the establishment of ginseng pyrethroid pesticide residue analysis sample pretreatment methods is the current problems to be solved. This paper established a ginseng samples permethrin, bifenthrin, cyfluthrin, fenvalerate, deltamethrin, fenpropathrin and cyhalothrin seven pyrethroid insecticide residues in gas Chromatography. The main contents are as follows: 1. Combined homogenization extraction and solid phase extraction purification, optimized pyrethroid pesticide residues in ginseng solid phase extraction method for the determination result seven kinds of pyrethroid pesticide high, medium and low three horizontal, the average recoveries were 93.9% -103.3 permethrin% bifenthrin 82.8% ~ 100.5%, cyfluthrin 89.8% ~ 101.7%, 82.7% ~ 99.4% fenvalerate, deltamethrin 84.0 % ~ 100.3%, 80.0%, Fenpropathrin cyhalothrin ~ 95.6% and 79.1% ~ 101.0%; relative standard deviations were 3.6% ~ 9.9%, 6.8% to 9.9%, 6.0% to 9.2%, 7.0% 9.4%, 4.5% to 9.5%, 5.1% to 8.8%, 8.4% ~ 9.7%. (2) with ultrasound to study the packed column, the extraction agent, and the ratio of the extractant and the amount of eluent, ultrasonic ultrasonic time on 7 kinds of ginseng extract of pyrethroids, the oscillation method compared to optimize the Samples pyrethroids optimum extraction conditions, in order to determine the ginseng seven kinds of pyrethroid pesticide residues extraction technology, and ginseng seven pyrethroid pesticide residues were measured recoveries, seven kinds of pyrethroid esters of pesticides in ginseng high, medium and low three levels of chlorine average recoveries were 79.2% ~ 100.0% permethrin, bifenthrin 81.5% ~ 95.8%, cyfluthrin 76.8% ~ 101.7%, fenvalerate 87.6% ~ 97.7%, 83.5% to 100.0% deltamethrin, fenpropathrin 80.0% ~ 101.3% and 76.8% of cyhalothrin ~ 99.4%; relative standard deviations were 4.3% ~ 10.7%, 8.3% ~ 9.9 %, 4.0% ~ 10.1%, 8.2% ~ 10.1%, 5.6% to 9.7%, 5.8% to 9.7%, 4.0% to 9.7%, both to meet the measurement requirements.
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