Determination Of Organic Phosphorus Content In Some Roots Adulterants

Traditional Chinese medicine (natural medicine) because of its efficacy and side effects significantly small by more and more people in the world recognized and applied, however the varieties of traditional Chinese medicines in the export process has encountered a bottleneck, in the final analysis is unstable because of the quality of Chinese medicine, and lack of effective components and pesticide residues is one of the important factors affecting the quality of drugs.The invention of pesticides has been played a very important role in agriculture.It greatly improved the output of crops.At the same time,some damages came. Herbalist in order to enhance the production of medicine, tend to spray a lot of pesticides in the planting process,it is harmful to our health and our enviroment. At present, up to more than300species of organic phosphorus pesticides, many of which belong to highly toxic pesticides, methamidophos, methyl parathion, monocrotophos and other, pesticide residues in medicinal plants are of general concern, so as soon as possible establish method for detection of organophosphorus pesticide residues in Chinese herbal medicines and limits, to guarantee drug safety is of great significance.Referred to a lot of literatures of pesticide residues,this paper established a simultaneous determination of organophosphorus pesticide residues in Chinese herbal medicines analysis. Summary GC-FPD test method have found strong exclusive, high sensitivity, easy operation, matrix interference of impurities can be avoided to a large extent, could well be used for detection of organophosphorus pesticide residue analysis. Therefore this study using the GC-FPD method, the establishment of a method of analysis for the determination of organophosphorus pesticide residues in Chinese herbal medicines. Results is the minimum detectable limit of41oganophpsphorus pesticides was from0.9to22.5μg·kg-1. The average recovery was70.6%～113.9%with RSD of0.2%～14.1%, on detection of organophosphorus pesticides in Chinese medicinal materials in a reference.