| 光谱学与光谱分析 |
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| Study on Different Digestion Methods for Determination of Twelve Metal Elements in the Plant Platycodon Grandiflorum (Jacq.) A. DC.by FAAS |
| XUE Guo-qing1,HAN Yu-qi1,SONG Hai1,DI Duo-long2 |
1. Department of Chemistry, Key Laboratory of Resources and Environment Chemistry of West China, Hexi University, Zhangye 734000, China
2. Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000，China |
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Abstract In the present paper the effects of different digestion methods on determining the amount of metal elements in the plant platycodon grandiflorum (Jacq.) A. DC. by flame atomic absorption spectrophotometry(FAAS) are reported. FAAS method was established for the determination of K, Mg, Ca, Cu, Zn, Mn, Fe, Co, Ni, Cd and Cr and Pb in the plant platycodon grandiflorum (Jacq.) A. DC. The samples were incinerated and followed by digestion with HNO3-HClO4(φ,4∶1) at 90-95 ℃ and normal pressure. In the meantime, the optimum parameters of FAAS and effects of solution medium on the results were discussed. The analytical results of K, Mg, Ca, Mn, Fe, Cu and Zn were 13 226.32, 922.57, 1 710.72, 9.23, 336.66, 8.75 and 19.62 μg·g-1 respectively, while Co, Ni, Cd, Cr and Pb were not checked out in the samples. The results showed that the recovery of standard addition was 95.45%～105.50% and the relative standard deviation (n=9) was 0.34%～5.78%. The method is quick, simple and convenient, and the results are satisfactory.
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Received: 2006-03-28
Accepted: 2006-06-28
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Corresponding Authors:
XUE Guo-qing
E-mail: xuegq@hxu.edu.cn
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| Cite this article: |
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XUE Guo-qing,HAN Yu-qi,SONG Hai, et al. Study on Different Digestion Methods for Determination of Twelve Metal Elements in the Plant Platycodon Grandiflorum (Jacq.) A. DC.by FAAS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(06): 1231-1234.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I06/1231 |
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