| Summary: | 碩士 === 高雄醫學大學 === 藥學研究所碩士在職專班 === 92 === Six heavy metal trace elements (As, Hg, Cu, Pb, Cd, and Zn) in
general Chinese herbs were analyzed by Flame Atomic Absorption
Spectrophotometer (FAAS). Ten Chinese herbs were focused and
studied by a variety of methods (appearance observation, microscopic
examination of tissue pieces, and thin layer chromatography) for the
quality and matrix confirmation. In addition, the amounts variation of
the six heavy metal trace elements in the herbs planted in north, middle,
and south Taiwan were investigated. Our results revealed that all the
amounts of the 6 trace elements contained in the 10 Chinese herbs are
lower than the safety cutoff values set among countries, but are quite
variable. The highest amount of the heavy metals of Cu, Pb, Cd, Zn,
As, and Hg was detected from Flos Lonicerae (14.85ppm), Radix
Dipsaci(6.95ppm), Radix Dipsaci(0.37ppm), Radix Dipsaci (36.34ppm),
Cordyceps (3.07ppm), and Radix Ginseng (0.09ppm), respectively On
the other hand, the largest amount of heavy metal contained in the 10
individual Chinese herb was as described: Radix Ginseng(Zn,
15.94ppm), Cordyceps (Cu, 11.26ppm), Flos Lonicerae(Zn, 33.63ppm),
Radix Paeoniae Alba(Cu, 3.77ppm), Radix Glycyrrhizae(Cu, 6.76ppm),
Cortex Cinnamomi(Pb, 2.08ppm), Radix Angelicae Dahuricae(Zn,
19.23ppm), Rhizoma Notopterygii(Zn, 20.36ppm), Radix Dipsaci(Zn,
36.34ppm), and Radix et Rhizoma Rhei (Zn, 5.66ppm). Interestingly,
the heavy metal detected from the 10 herbs with highest value was
found to be Zn (60%, 6 out of 10) and Cu (30%, 3 out of 10). The
largest value of sum-up amount of the 6 metals was identified to be Flos
Lonicerae (totally, 55.55ppm) and Radix Dipsaci (totally, 54.59ppm).
The amount variation of the 6 metals contained in the 10 herbs was also
found to be the Flos Lonicerae and the Radix Dipsaci.
Key word: Chinese herbs (Chinese medicine), thin layer chromatography,
heavy metal trace elements, Atomic Absorption Spectrophotometer
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