Survey of Heavy Metal Contents and Intake Rates After Decoction in Herbal Medicines Classified by Parts
2010
Jung, S.J., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Kang, S.T., Seoul National University of Technology, Seoul, Republic of Korea | Han, C.H., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Kim, S.J., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Ko, S.K., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Kim, Y.H., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Kim, Y.K., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Kim, B.S., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Choi, B.H., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea
The study was conducted to estimate the contents of heavy metal in commercial herbal medicines (1047 samples of 132 species) which were collected from markets in Seoul and to analyze the contents of heavy metals of herbal medicines by classifying them by parts. The samples were digested using microwave method. The contents of heavy metal (Pb, Cd, and As) and Hg were determined using Inductively coupled plasma-Mass spectrometer (ICP/MS). And the contents of Hg were obtained by Mercury analyzer. The average values of heavy metal in herbal medicines were as follows [mean (minimum-maximum), mg/kg]; Pb 0.870 (ND-69.200), As 0.148 (ND-2.965), Cd 0.092 (ND-2.010), and Hg 0.007 (ND-0.137). And the average values of heavy metal by parts in herbal medicines were as follows [mean (minimum-maximum), mg/kg]; Ramulus 2.046 (0.065-4.474), Herba 1.886 (0.048-10.404), Flos 1.874 (0.052-5.393), Cortex 1.377 (0.011-4.837), Radix 1.165 (0.012-70.111), Rhizoma 1.116 (0.016-5.490, Fructus 0.838 (0.017-4.527), Perithecium 0.729 (0.013-4.953), Semen 0.646 (0.006-4.416). The average values of heavy metal of imported herbal medicines except Radix were higher than domestic ones. By decoction of herbal medicines exceeding the tolerances, average intake rates of Pb, As, Cd and Hg were obtained as 6.1%, 40.3%, 4.7%, and 2.2%, respectively.
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