| 光谱学与光谱分析 |
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| Analysis of Trace Elements in Corncob by Microwave Digestion-ICP-AES |
| SUN Yong1,2,ZHANG Jin-ping1,2,YANG Gang1,2,LI Zuo-hu1* |
1. National Key Laboratory of Biochemical Engineering,Institute of Process Engineering，Chinese Academy of Sciences，Beijing 100080,China
2. Graduate School of the Chinese Academy of Sciences,Beijing 100039,China |
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Abstract The contents of trace elements of Zn，Mg，Mn，Sr，Fe，Pb，Cu and Se in the corncob collected from Beijing,Shandong, Jilin, Yunnan, Xinjiang, Gansu,Shanxi, Shaanxi, Jiangsu, Neimeng in China were determined by ICP-AES using microwave digestion. The optimum condition of digesting the corncob was: put 1.5 mL of 68% nitric acid and 0.5 mL of hydrofluoric acid in the pot,then digested the sample with 3 steps under the 400 W power in the microwave oven. This digesting procedure could completely and quickly digest the sample. The relative standard deviations and recovery yield are 0.72%-4.16% and 95.5%-104.5% for Zn,1.58-3.66% and 98.2%-103.5% for Mg,0.19%-4.58% and 97.0%-103.2% for Mn,1.31%-4.90% and 95.7%-104.1% for Sr,1.40%-4.01% and 95.9%-104.6% for Fe,1.55%-4.28% and 95.1%-104.5% for Pb,2.16%-5.00% and 96.4%-103.5% for Cu,and 2.00%-4.99% and 95.1%-101.3% for Se,respectively. The analysis of the trace metals by the method of ICP-AES using the method of microwave digestion proved to be easily operational,rapid,highly sensitive,and accurate. It could be adopted as the method of determining many elements simultaneously.
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Received: 2006-05-10
Accepted: 2006-08-20
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Corresponding Authors:
LI Zuo-hu
E-mail: ysun@home.ipe.ac.cn
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| Cite this article: |
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SUN Yong,ZHANG Jin-ping,YANG Gang, et al. Analysis of Trace Elements in Corncob by Microwave Digestion-ICP-AES[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(07): 1424-1427.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I07/1424 |
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