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Article: An improved Carius tube technique for determination of low concentrations of Re and Os in pyrites
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TitleAn improved Carius tube technique for determination of low concentrations of Re and Os in pyrites
 
AuthorsQi, L1
Zhou, MF2
Gao, J2
Zhao, Z1
 
Issue Date2010
 
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/jaas
 
CitationJournal Of Analytical Atomic Spectrometry, 2010, v. 25 n. 4, p. 585-589 [How to Cite?]
DOI: http://dx.doi.org/10.1039/b919016c
 
AbstractA simple and highly selective analytical method is developed for Re-Os dating in hydrothermal pyrites. Pyrites were first digested with HNO 3 in a 120 ml Carius tube. The released additional gas and a small portion of volatile Os (∼6% of total Os) were collected by 10 mol l -1 of HCl in an ice-water bath. After the sulfides were totally reacted with HNO 3, the HCl solution containing all the released Os was transferred back to the Carius tube. The sample was further digested in aqua regia at 200 °C for about 10 h in a sealed Carius tube. Because prior digestion in an open Carius tube removed the additional gas, this improved technique allows increasing the sample mass to about 3 g, which is vital for Re-Os dating in Re and Os poor hydrothermal pyrites. Os was separated from the matrix by distillation and Re by anion exchange resin. The results obtained for molybdenite reference materials, JDC and HLP mixed with 3 g pyrite are in good agreement with certified values. Despite very low concentrations of Re and Os, the pyrite yields excellent repeatability and can be used for Re and Os poor hydrothermal pyrites. © 2010 The Royal Society of Chemistry.
 
ISSN0267-9477
2013 Impact Factor: 3.396
2013 SCImago Journal Rankings: 1.111
 
DOIhttp://dx.doi.org/10.1039/b919016c
 
ISI Accession Number IDWOS:000275926900015
Funding AgencyGrant Number
Chinese Academy of SciencesKZCX2-YW-BR-09
Chinese 973 project2007CB411401
National Natural Science Foundation of China (NSFC)40773070
Research Grant Council of Hong KongHKU7057/05P
Funding Information:

This study was supported by the "CAS Hundred Talents" Project from the Chinese Academy of Sciences to Qi Liang (KZCX2-YW-BR-09), the Chinese 973 project (2007CB411401), the National Natural Science Foundation of China (NSFC 40773070) and the Research Grant Council of Hong Kong (HKU7057/05P). We thank Prof. P.J. Sylvester for critical reading of the draft of this paper. We thank Dr D. C. Gregoire from the Geological Survey of Canada for providing us with the spike solutions of 185 Re, 190 Os.

 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorQi, L
 
dc.contributor.authorZhou, MF
 
dc.contributor.authorGao, J
 
dc.contributor.authorZhao, Z
 
dc.date.accessioned2010-12-23T08:33:16Z
 
dc.date.available2010-12-23T08:33:16Z
 
dc.date.issued2010
 
dc.description.abstractA simple and highly selective analytical method is developed for Re-Os dating in hydrothermal pyrites. Pyrites were first digested with HNO 3 in a 120 ml Carius tube. The released additional gas and a small portion of volatile Os (∼6% of total Os) were collected by 10 mol l -1 of HCl in an ice-water bath. After the sulfides were totally reacted with HNO 3, the HCl solution containing all the released Os was transferred back to the Carius tube. The sample was further digested in aqua regia at 200 °C for about 10 h in a sealed Carius tube. Because prior digestion in an open Carius tube removed the additional gas, this improved technique allows increasing the sample mass to about 3 g, which is vital for Re-Os dating in Re and Os poor hydrothermal pyrites. Os was separated from the matrix by distillation and Re by anion exchange resin. The results obtained for molybdenite reference materials, JDC and HLP mixed with 3 g pyrite are in good agreement with certified values. Despite very low concentrations of Re and Os, the pyrite yields excellent repeatability and can be used for Re and Os poor hydrothermal pyrites. © 2010 The Royal Society of Chemistry.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationJournal Of Analytical Atomic Spectrometry, 2010, v. 25 n. 4, p. 585-589 [How to Cite?]
DOI: http://dx.doi.org/10.1039/b919016c
 
dc.identifier.doihttp://dx.doi.org/10.1039/b919016c
 
dc.identifier.epage589
 
dc.identifier.hkuros177757
 
dc.identifier.isiWOS:000275926900015
Funding AgencyGrant Number
Chinese Academy of SciencesKZCX2-YW-BR-09
Chinese 973 project2007CB411401
National Natural Science Foundation of China (NSFC)40773070
Research Grant Council of Hong KongHKU7057/05P
Funding Information:

This study was supported by the "CAS Hundred Talents" Project from the Chinese Academy of Sciences to Qi Liang (KZCX2-YW-BR-09), the Chinese 973 project (2007CB411401), the National Natural Science Foundation of China (NSFC 40773070) and the Research Grant Council of Hong Kong (HKU7057/05P). We thank Prof. P.J. Sylvester for critical reading of the draft of this paper. We thank Dr D. C. Gregoire from the Geological Survey of Canada for providing us with the spike solutions of 185 Re, 190 Os.

 
dc.identifier.issn0267-9477
2013 Impact Factor: 3.396
2013 SCImago Journal Rankings: 1.111
 
dc.identifier.issue4
 
dc.identifier.scopuseid_2-s2.0-77950278351
 
dc.identifier.spage585
 
dc.identifier.urihttp://hdl.handle.net/10722/129178
 
dc.identifier.volume25
 
dc.languageeng
 
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/jaas
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofJournal of Analytical Atomic Spectrometry
 
dc.relation.referencesReferences in Scopus
 
dc.titleAn improved Carius tube technique for determination of low concentrations of Re and Os in pyrites
 
dc.typeArticle
 
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Author Affiliations
  1. Institute of Geochemistry Chinese Academy of Sciences
  2. The University of Hong Kong