The Risk Assessment of Residual Pesticides and Heavy Metals in Rehmanniae Radix Preparata
To obtain the risk assessment of hazardous materials in Rehmanniae Radix Preparata, the residual pesticides and heavy metals in samples on the Korea and China are surveyed. Group Ⅰ(BHC-δ, BHC-β, Fenitrothion, Penthoate, Endosulfan-α, Dieldrin, Endosulfan-β and Endosulfan-sulfate), Group Ⅱ(BHC-γ, Aldrin, DDD, DDT-p,p Permethrin and Fenvalerate), Group Ⅲ(BHC-α, Chlorpyrifos, Tolyfluanid, Captan and DDT-o,p) and Group Ⅳ(Quintozene, Vinclozolin, DDE and Chlorfenapyr) could analysed on gas chromatography-ECD for evaluation of residual pesticides. Qualified detection concentration on the GC-ECD are 0.45 ng/g~2.50 ng/g. Group Ⅰ, Group Ⅱ, Group Ⅲ and Group Ⅳ are not detected in Rehmanniae Radix Preparata on the Korea and China. Concentration of As, Cd and Pb in Rehmanniae Radix Preparat. on the Korea are 3.06%, 7.00% and 5.78% for Korea Food & Drug Administration(KFDA). Concentration of As, Cd and Pb in Rehmanniae Radix Preparata. on the China are 5.16%, 5.33% and 6.50% for Korea Food & Drug Administration(KFDA). The hazardous materials in Rehmanniae Radix Preparata on the Korea and China were verified the safety of the residual heavy metals and pesticides compare with Korea Food & Drug Administration (KFDA) advisory level.