| 光谱学与光谱分析 |
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| Determination of Lead, Cadmium, Mercury, Chromium and Arsenic in Acrylonitrile-Butadiene-Styrene Copolymer Using Microwave Digestion-ICP-MS |
| WANG Ying-feng1,SHI Yan-zhi1*,ZHANG Hua1,CHEN Yu-hong2,John Lau2, Steven Wilbur2,LI Ping2 |
1. Analysis and Testing Center, Capital Normal University, Beijing 100037, China
2. Agilent Technologies (Beijing), Beijing 100022, China |
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Abstract A method was studied for the analysis of Cr, As, Cd, Hg and Pb in acrylonitrile-butadiene-styrene copolymer by using ICP-MS. The instrument parameters were optimized and the introduction system was developed systematically. The sample is decomposed by microwave digestion. The digestion condition was optimized concerning digestion system, proportion of acids and digestion procedure, which affords reference for the preparation of the same kinds of polymer samples. The detection limits of the method for all sample elements were 0.7-6.5 ng·g-1,the recoveries were 89.8%-110.8%, and the RSDs were 2.8%-11.3%. The analytical method presented was characterized with good precision and accuracy, simplicity, rapidness, low limits of detection and no matrix matching requirements.
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Received: 2006-09-29
Accepted: 2006-12-28
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Corresponding Authors:
SHI Yan-zhi
E-mail: bjshifa@sohu.com
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