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KMID : 0352119960120020158
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Journal of Kyung Hee University
1996 Volume.12 No. 2 p.158 ~ p.166
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Studies on Contents and Elution of Metals from Crude Drugs
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김남재
심상범/류재환/김종우/홍남두
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Abstract
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Quantitative analysis of 11 kinds of metals was performed in 12 species of commercially available crude drugs by means of inductively coupled plasma spectrophotometer (ICPS).
Estimation of the elution rate of metals in decoction prepared from crude drugs and the proportions of metal contents in precipitate and supernatant of decoction prepared from crude drugs which were added 5 ppm of seven standard metals; Cr, Mn,
Co,
Ni,
Cu, Cd, Pb were quantitatively analyzed. All samples were digested with wet-oxidation method by nitric acid and perchloric acid. Contents of metals in samples were analyzed by ICPS.
Metal contents in those specimens were summarized as follows: Mg and Ca contents were higher than other metals, and Mg and Ca contents of Menthae Herba and Fe content of Asiasari Raidx were higher than other specimens. Cd, Cr, Pb, Ni and Co were
not
detected in any crude drugs.
Means of elution rate of Mg, Ca, Mn, Fe and Zn in decoction from crude drugs were respectively 53.2%, 30.7%, 39.2%, 12.9% and 42.2%. Especially, elution rate of metals from Angelicae Radix and Galla Rhois were high, but from Aurantii nobils
Pericarpium
was low.
The proportion of metal contents in precipitate of decoction prepared from all specimens added 5 ppm of Pb, Cu, Cd, Cr, Mn, Ni and Co were respectively 95.8%, 83.2%, 54.7%, 48.8%, 31.6%, 31.1% and 29.8%. The removal rate of metals in precipate of
decoction prepared from Galla Rhois was low, but from Phellodendri Cortex was high.
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