| 光谱学与光谱分析 |
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| Determination of Palladium in Automobile Exhaust Catalysts by FAAS Method |
| WEI Xiao-feng1, CAI Guo-hui1, XIAO Yi-hong1, ZHAN Ying-ying1, XIE Zeng-hong2, WEI Ke-mei1* |
1. National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
2. College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China |
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Abstract Palladium in automotive exhaust catalyst was determined by flame atomic absorption spectrometry (FAAS). The analytical conditions and the coexisting elements interference were studied. The catalyst was dissolved by the mixture of H2O2 and HCl. Pd in the solution was directly determined by FAAS method. The linearity of working curve ranges from 0.1 to 15 μg·mL-1; the detection limit is 0.029 μg·mL-1; the relative standard deviation (RSD) range is from 0.8% to 2.5%; and the recovery rate range is from 99.6% to 101.2%. It is a simple and convenient method for accurate analysis of Pd in the exhaust catalysts.
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Received: 2008-12-12
Accepted: 2009-03-16
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Corresponding Authors:
WEI Ke-mei
E-mail: wei@fzu.edu.cn
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