| 光谱学与光谱分析 |
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| Investigation of Determining Strontium in M. nitida Benth. var. hirsutissima. Z. Wei. by Flame Atomic Absorption Spectra |
| ZHANG Ling，RAO Zhi-jun，GUAN Yuan-yuan，ZHANG Hai-ming |
| Key Laboratory of Modern Preparation of Traditional Chinese Medicine，Jiangxi College of Traditional Chinese Medicine, Nanchang 330004，China |
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Abstract The present paper is aimed to establish the method of determining the strontium in M. nitida Benth. var. hirsutissima. Z. Wei. by means of air-acetylene flame atomic absorption spectra, and also provide reference for the determination of the strontium in other traditional Chinese medicine. M. Nitida Benthvarhirsutissima Z. Wei. was taken as the object. The authors used nitric-perchloric acid as digestion solution to digest samples by microwave which was controlled by pressure, and used EDTA-2Na as the releasing agent to add in the samples for determining the strontium in M. nitida Benth. var. hirsutissima. Z. Wei. by FAAS. The results showed that the samples were entirely digested by microwave. The working curve was Y=0.036 5x-0.001 1，r=0.999 4, the range was 0-1.6 μg·mL-1, the average recovery rate was 101.5% with RSD 2.04%, and the method detection limit was 0.008 2 μg·mL-1 (n=21). It is concluded that this method is simple and accurate. It has high sensitivity and can be effectively used for determining the strontium in this traditional Chinese medicine.
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Received: 2010-02-10
Accepted: 2010-05-20
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Corresponding Authors:
ZHANG Ling
E-mail: dw64810@163.com
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