Simultaneous Determination of Trace Platinum, Palladium and Rhodium in Environmental Dust Samples by ICP-MS after Open-Digestion
SHI Yan-zhi1,HE Run-juan2,WANG Juan2,ZHU Ruo-hua2*
1. Center of Analysis and Testing, Capital Normal University, Beijing 100037, China 2. Department of Chemistry, Capital Normal University, Beijing 100037, China
Abstract：A sensitive method for simultaneous determination of Pt, Pd and Rh in dust samples by ICP-MS after open-digestion was developed. The digestion method for the samples and conditions for measurement for ICP-MS were studied in detail. Aqua-regia was proved to be a better solvent for the digestion of dust samples. Under the optimum conditions, the limits of detection of Pt, Pd and Rh were 0.48, 4.22 and 0.42 ng·g-1,respectively. The proposed method was applied to the real sample analysis, and good recoveries were obtained. The recoveries of Pt, Pd and Rh were found to be between 87.6%-88%, 85.2%-87.8%, and 93%-95%, respectively.
Key words：PGE;ICP-MS;Environmental dust samples;Digestion with Aqua-regia
[1] Cicchella D, De Vivo B, Lima A. The Science of the Total Environment, 2003, 308: 121. [2] YAO Li-zhu, YANG Hong-miao, SONG Yi, et al(姚丽珠，杨红苗，宋 义, 等). Metallurgical Analysis(冶金分析)，2003，23(5)：14. [3] HAN Hua-yun, LIN Lin, HAO Qing-xiu, et al(韩华云，林 琳，郝庆秀, 等). Environmental Pollution and Prevention(环境污染与防治)，2003，25(1)：63. [4] ZHU Guo-hui, ZHU Zhan-cai, XUE Hui, et al(朱国辉，朱展才，薛 辉，等). Bulletin in Analytical Chemistry Research(分析化学研究简报)，2003, 31(1)：48. [5] FAN Zhe-feng, DU Li-ming, JIN Xiao-tao(范哲锋，杜黎明，靳晓涛). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2003, 23(2): 365. [6] YUAN Zhuo-bin, Lü Yuan-qi, ZHANG Yu-ping(袁倬斌，吕元琦，张裕平). Metallurgical Analysis(冶金分析)，2003，23(2)：24. [7] SUN Zhong-hua, ZHANG Zhi-ren, MAO Ying, et al(孙中华，章志仁，毛 英, 等). Precious Metals(贵金属), 2002, 23(4): 39. [8] LI Bing, YANG Hong-xia(李 冰，杨红霞). Earth Science Frontiers(地学前缘) , 2003, 10(2): 367. [9] HE Hong-yao, Lü Cai-fen, ZHOU Zhao-ru(何红蓼，吕彩芬，周肇茹). Rock and Mineral Analysis(岩矿测试)，2001，20(3): 191. [10] QI Liang, HU Jing (漆 亮, 胡 静). Rock and Mineral Analysis(岩矿测试)，1999，18(4): 267. [11] XU Ling, KE Xing(许 菱，柯 醒编译). Journal of Precious Metallic Geology(贵金属地质), 1996, 5(3): 234. [12] CHENG Hang-xin, XIE Xue-jin, YAN Guang-sheng(成杭新, 谢学锦, 严光生). Acta Geochimica Sinica(地球化学), 1998, 27(2): 102. [13] XIE Lie-wen, HOU Quan-lin, YAN Xin, et al(谢烈文, 侯泉林, 阎 欣, 等). Rock and Mineral Analysis(岩矿测试)，2001，20(2): 88.
