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- E-ISSN 2288-8985
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Distribution of hazardous heavy metals in commercial herbal medicines classified by plant parts used in seoul
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2009, v.22 no.6, pp.504-513
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(2009). Distribution of hazardous heavy metals in commercial herbal medicines classified by plant parts used in seoul. Analytical Science and Technology, 22(6), 504-513.
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Abstract
In this study, the safety of commercial herbal medicines was evaluated by determining concentration of hazardous heavy metals. 3,152 samples (244 types) purchased by individual packing unit from market in Seoul, were analyzed using ICP-MS and mercury analyzer. As a result, the content (㎎ ㎏<SUP>−1</SUP>) of Pb was higher in the above-ground part (0.92) than underground part (0.43). But in case of As and Cd contents, there is slightly higher in the underground-parts (0.26, 0.13) than the above-ground parts (0.18, 0.08). There were many herbal medicines exceeding regulatory limits of Cd comparing with other metals. The levels of Hg seemed to be different between above-ground part(0.009) and underground part (0.008) but there was no sample exceeding tolerance limits. In the comparison of imported samples with domestic herbal medicines, it was shown that Pb, As, and Hg were measured highly in the imported ones, Cd was not significantly different (t-test, p＜0.05). The significant correlation was observed between Pb and As (r=0.386, p＜0.01) but there was no difference in other parts. The heavy metal contamination of herbal medicines measured in total amount of respective heavy metals (㎎ ㎏<SUP>−1</SUP>) was high in Flos (6.241) and Caulis (2.238), and decreased in the order of Cortex (1.634), Herba (1.154), Perithecium (0.861), Rhizoma (0.828), Radix (0.825), Fructus (0.475), and was low in Semen (0.422) (ANOVA-test, p＜0.05).
- keywords
- heavy metals, herbal medicines, ICP-MS
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