| 光谱学与光谱分析 |
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| Determination of Copper, Chromium and Arsenic in Wood and Its Products by High Pressure Digest-ICP-AES |
| JIN Xian-zhong1,2,CHEN Jian-guo2,ZHU Li-hui2,CAO Guo-zhou2,HUANG Ben-li1* |
1. Department of Chemistry and the Ministry of Education Key Laboratory of Analytical Sciences，College of Chemistry and Chemical Engineering，Xiamen University，Xiamen 361005, China
2. Ningbo Entry-Exit Inspection and Quarantine Bureau, Ningbo 315012, China |
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Abstract Sample preparation was studied，samples were sawn to be sawdust，screened by a 35 mesh sieve，dryed 4-5 h at 105 ℃，and its homogeneity was tested by variance analysis. Sample pretreatment methods were investigated with wet decomposition, dry ashing，high pressure digest (including microwave-assisted closed digestion and steel liner PTFE vessel digestion). According to the comparative results, wet decomposition is fit for testing soluble copper, chromium and arsenic. Dry ashing and high pressure digest are fit for testing total copper, chromium and arsenic, but arsenic is easy to lose in dry ashing. Acidity effect and matrix effect were discussed. A method was proposed for the determination of total copper, chromium and arsenic in wood and its products by high pressure digest-ICP-AES. The detection limit of copper, chromium and arsenic was 1.2, 0.2 and 7.1 mg·kg-1,respectively, RSDs were in the range of 0.2%-1.5%, and recoveries were between 92% and 106%. Using this method, more reasonable results will be given for controlling toxic substances from wood and its products and their wastes. This method has been applied to practical sample analysis.
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Received: 2006-04-10
Accepted: 2006-08-20
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Corresponding Authors:
HUANG Ben-li
E-mail: jinxzh68@tom.com
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| Cite this article: |
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JIN Xian-zhong,CHEN Jian-guo,ZHU Li-hui, et al. Determination of Copper, Chromium and Arsenic in Wood and Its Products by High Pressure Digest-ICP-AES[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(09): 1837-1840.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I09/1837 |
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