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学科主题: Chemistry ; Food Science & Technology ; Spectroscopy
题名: A method for determination of PGE-Re concentrations and Os isotopic compositions in environmental materials
作者: Zhao, PP ; Li, J ; Zhong, LF ; Sun, SL ; Xu, JF
通讯作者: jieli@gig.ac.cn
刊名: ANALYTICAL METHODS
发表日期: 2014
卷: 6, 期:15, 页:5537-5545
收录类别: sci
部门归属: [Zhao, Peipei ; Li, Jie ; Sun, Shengling ; Xu, Jifeng] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Guangdong, Peoples R China ; [Zhao, Peipei] Univ Chinese Acad Sci, Beijing 100049, Peoples R China ; [Zhong, Lifeng] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
项目归属: 海洋地质
资助者: Guangdong Natural Science Foundation [9151064004000010, S2012010010416]; Nature Science Foundation of China [41173038, 41203010]; Knowledge Innovation Program of the Chinese Academy of Sciences [SQ201111]
摘要: Automobile catalyst emissions not only result in increasing environmental concentrations of Pt, Pd, and Rh, but also Os, Ir, and Ru. Little is known about the behavior of platinum-group elements (PGE) and Re in the environment and their potential risk to humans and, as such, the monitoring of Os, Ir, Ru, and Re concentrations in environmental samples is necessary. We present an improved procedure for determination of PGE-Re concentrations and Os-187/Os-188 ratios of the environmental reference material BCR-723 by isotope dilution inductively coupled plasma mass spectrometry (ID-ICP-MS) and negative thermal ionization mass spectrometry (N-TIMS), respectively. The sample is digested with inverse aqua regia in a Carius tube. After Os separation by CCl4 solvent extraction, separation and purification of PGE and Re from sample matrix elements is sequentially performed by a two-stage tandem column setup using cation exchange and N-benzoyl-N-phenylhydroxylamine (BPHA) extraction resin. Elution of 0.1 mol L-1 HCl efficiently removes interfering elements such as Zr, Hf, Mo, and Cd in the final purified sample prior to ID-ICP-MS determination of PGE and Re. Analyses of BCR-723 yield reproducible results and well-defined average Pt, Pd, Os, Ir, Ru, and Re concentrations of 79.8 +/- 6.0, 4.6 +/- 0.8, 0.37 +/- 0.04, 0.23 +/- 0.12, 1.1 +/- 0.3, and 6.5 +/- 0.1 ng g(-1), respectively (95% confidence level; n = 10). The Os-187/Os-188 ratio of this standard was determined to be 0.537 +/- 0.022 (95% confidence level; n = 10). These are the first comprehensive PGE and Re concentrations and Os isotopic compositions reported for BCR-723 and provide a well-characterized standard for assessing the data quality of autocatatyst PGE measurements and related research on environmental materials. The method was successfully employed in the determination of PGE and Re concentrations and Os isotopic compositions in urban road dust samples.
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WOS记录号: WOS:000339468600014
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10608
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Zhao, PP; Li, J; Zhong, LF; Sun, SL; Xu, JF.A method for determination of PGE-Re concentrations and Os isotopic compositions in environmental materials,ANALYTICAL METHODS,2014,6(15):5537-5545
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