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A method for determination of PGE-Re concentrations and Os isotopic compositions in environmental materials
Zhao, PP; Li, J; Zhong, LF; Sun, SL; Xu, JF; jieli@gig.ac.cn
2014
Source PublicationANALYTICAL METHODS
ISSN1759-9660
Volume6Issue:15Pages:5537-5545
AbstractAutomobile 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.
Department[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
Subject AreaChemistry ; Food Science & Technology ; Spectroscopy
Funding OrganizationGuangdong Natural Science Foundation [9151064004000010, S2012010010416]; Nature Science Foundation of China [41173038, 41203010]; Knowledge Innovation Program of the Chinese Academy of Sciences [SQ201111] ; Guangdong Natural Science Foundation [9151064004000010, S2012010010416]; Nature Science Foundation of China [41173038, 41203010]; Knowledge Innovation Program of the Chinese Academy of Sciences [SQ201111] ; Guangdong Natural Science Foundation [9151064004000010, S2012010010416]; Nature Science Foundation of China [41173038, 41203010]; Knowledge Innovation Program of the Chinese Academy of Sciences [SQ201111] ; Guangdong Natural Science Foundation [9151064004000010, S2012010010416]; Nature Science Foundation of China [41173038, 41203010]; Knowledge Innovation Program of the Chinese Academy of Sciences [SQ201111]
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Indexed Bysci
Funding Project海洋地质
Funding OrganizationGuangdong Natural Science Foundation [9151064004000010, S2012010010416]; Nature Science Foundation of China [41173038, 41203010]; Knowledge Innovation Program of the Chinese Academy of Sciences [SQ201111] ; Guangdong Natural Science Foundation [9151064004000010, S2012010010416]; Nature Science Foundation of China [41173038, 41203010]; Knowledge Innovation Program of the Chinese Academy of Sciences [SQ201111] ; Guangdong Natural Science Foundation [9151064004000010, S2012010010416]; Nature Science Foundation of China [41173038, 41203010]; Knowledge Innovation Program of the Chinese Academy of Sciences [SQ201111] ; Guangdong Natural Science Foundation [9151064004000010, S2012010010416]; Nature Science Foundation of China [41173038, 41203010]; Knowledge Innovation Program of the Chinese Academy of Sciences [SQ201111]
WOS IDWOS:000339468600014
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/10608
Collection中科院边缘海地质重点实验室
Corresponding Authorjieli@gig.ac.cn
Recommended Citation
GB/T 7714
Zhao, PP,Li, J,Zhong, LF,et al. A method for determination of PGE-Re concentrations and Os isotopic compositions in environmental materials[J]. ANALYTICAL METHODS,2014,6(15):5537-5545.
APA Zhao, PP,Li, J,Zhong, LF,Sun, SL,Xu, JF,&jieli@gig.ac.cn.(2014).A method for determination of PGE-Re concentrations and Os isotopic compositions in environmental materials.ANALYTICAL METHODS,6(15),5537-5545.
MLA Zhao, PP,et al."A method for determination of PGE-Re concentrations and Os isotopic compositions in environmental materials".ANALYTICAL METHODS 6.15(2014):5537-5545.
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