compound amount
5.METHODS: UD(U6(6^2)) was used to design the experiments of extraction, and LC-ESI-MS/MS was used to identify the components by MS?1 and MS?2. Meanwhile, we chose the extracted ion chromatography (EIC) area of each compound for applying UD analysis to optimize the factors influencing the extracration rate of Shuangshen Prescription, i.e. the amount of water added and the extracting time.
6.The determination of residues of benzene hexachloride and dichloro-diphenyltrichloroethane in Qingyuhenqi Pills and Compound Danshen Tablets by HPGC was carried out. Considering several isomer and metabolites of benzene hexachloride and dichlorodiphenyl-trichloroethane as constant amount,the detecting limit of this method is 1.8 ×10-4 ̄8. 0×10-3μg/g.

