Article: An improved Carius tube technique for determination of low concentrations of Re and Os in pyrites
| Title | An improved Carius tube technique for determination of low concentrations of Re and Os in pyrites | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Authors | Qi, L1 Zhou, MF2 Gao, J2 Zhao, Z1 | ||||||||||
| Issue Date | 2010 | ||||||||||
| Publisher | Royal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/jaas | ||||||||||
| Citation | Journal Of Analytical Atomic Spectrometry, 2010, v. 25 n. 4, p. 585-589 [How to Cite?] DOI: http://dx.doi.org/10.1039/b919016c | ||||||||||
| Abstract | A 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. | ||||||||||
| ISSN | 0267-9477 2011 Impact Factor: 3.22 2011 SCImago Journal Rankings: 0.186 | ||||||||||
| DOI | http://dx.doi.org/10.1039/b919016c | ||||||||||
| ISI Accession Number ID | WOS:000275926900015
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. | ||||||||||
| References | References in Scopus |
| dc.contributor.author | Qi, L | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| dc.contributor.author | Zhou, MF | ||||||||||
| dc.contributor.author | Gao, J | ||||||||||
| dc.contributor.author | Zhao, Z | ||||||||||
| dc.date.accessioned | 2010-12-23T08:33:16Z | ||||||||||
| dc.date.available | 2010-12-23T08:33:16Z | ||||||||||
| dc.date.issued | 2010 | ||||||||||
| dc.description.abstract | A 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.nature | Link_to_subscribed_fulltext | ||||||||||
| dc.identifier.citation | Journal 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.doi | http://dx.doi.org/10.1039/b919016c | ||||||||||
| dc.identifier.epage | 589 | ||||||||||
| dc.identifier.hkuros | 177757 | ||||||||||
| dc.identifier.isi | WOS:000275926900015
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.issn | 0267-9477 2011 Impact Factor: 3.22 2011 SCImago Journal Rankings: 0.186 | ||||||||||
| dc.identifier.issue | 4 | ||||||||||
| dc.identifier.scopus | eid_2-s2.0-77950278351 | ||||||||||
| dc.identifier.spage | 585 | ||||||||||
| dc.identifier.uri | http://hdl.handle.net/10722/129178 | ||||||||||
| dc.identifier.volume | 25 | ||||||||||
| dc.language | eng | ||||||||||
| dc.publisher | Royal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/jaas | ||||||||||
| dc.publisher.place | United Kingdom | ||||||||||
| dc.relation.ispartof | Journal of Analytical Atomic Spectrometry | ||||||||||
| dc.relation.references | References in Scopus | ||||||||||
| dc.title | An improved Carius tube technique for determination of low concentrations of Re and Os in pyrites | ||||||||||
| dc.type | Article |
Author Affiliations
- Institute of Geochemistry Chinese Academy of Sciences
- The University of Hong Kong