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Article: Evaluation of a technique for determining Re and PGEs in geological samples by ICP-MS coupled with a modified Carius tube digestion

TitleEvaluation of a technique for determining Re and PGEs in geological samples by ICP-MS coupled with a modified Carius tube digestion
Authors
KeywordsCarius tube
High pressure autoclave
ICP-MS
PGEs
Rhenium
Issue Date2007
PublisherBusiness Center for Academic Societies Japan.
Citation
Geochemical Journal, 2007, v. 41 n. 6, p. 407-414 How to Cite?
AbstractIn the determination of Re and platinum group elements in geological samples, various techniques have been employed for digesting samples, including Carius tube, high-pressure asher (HPA-S), alkali fusion and nickel sulfide fire assay. The normal Carius tube technique is able to digest relatively small amount of sample and has a possible safety problem caused by a high internal pressure. This paper reports a modified Carius tube method which utilizes a sealed stainless steel high-pressure autoclave filled with water to prevent explosion of the tube. During heating, the external and internal pressures of the Carius tube increase simultaneously, such that the possible explosion of Carius tube can be avoided. Consequently, this technique allows a higher temperature (up to 330°C), a greater volume of aqua regia (up to 2/3 of the total volume of the Carius tube) and thus larger sample mass (12 g) relative to the normal Carius tube technique. Fairly good agreement were obtained for PGE poor mafic rocks (IPGE < 0.03 ng/g). The efficiency to dissolve ultramafic rocks and chromites at different temperatures was investigated. We demonstrate that this technique is more effective than normal Carius tube technique for ultramafic rocks and chromites containing refractory minerals and the detection limits and precision can be improved for PGE poor mafic samples. The total procedural blanks are lower than 0.003 ng for Os, 0.03 ng for Re, Ir, Ru and Rh and 0.4 ng for Pd and Pt. Copyright © 2007 by The Geochemical Society of Japan.
Persistent Identifierhttp://hdl.handle.net/10722/72762
ISSN
2015 Impact Factor: 0.621
2015 SCImago Journal Rankings: 0.837
References

 

DC FieldValueLanguage
dc.contributor.authorQi, Len_HK
dc.contributor.authorZhou, MFen_HK
dc.contributor.authorWang, CYen_HK
dc.contributor.authorSun, Men_HK
dc.date.accessioned2010-09-06T06:44:52Z-
dc.date.available2010-09-06T06:44:52Z-
dc.date.issued2007en_HK
dc.identifier.citationGeochemical Journal, 2007, v. 41 n. 6, p. 407-414en_HK
dc.identifier.issn0016-7002en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72762-
dc.description.abstractIn the determination of Re and platinum group elements in geological samples, various techniques have been employed for digesting samples, including Carius tube, high-pressure asher (HPA-S), alkali fusion and nickel sulfide fire assay. The normal Carius tube technique is able to digest relatively small amount of sample and has a possible safety problem caused by a high internal pressure. This paper reports a modified Carius tube method which utilizes a sealed stainless steel high-pressure autoclave filled with water to prevent explosion of the tube. During heating, the external and internal pressures of the Carius tube increase simultaneously, such that the possible explosion of Carius tube can be avoided. Consequently, this technique allows a higher temperature (up to 330°C), a greater volume of aqua regia (up to 2/3 of the total volume of the Carius tube) and thus larger sample mass (12 g) relative to the normal Carius tube technique. Fairly good agreement were obtained for PGE poor mafic rocks (IPGE < 0.03 ng/g). The efficiency to dissolve ultramafic rocks and chromites at different temperatures was investigated. We demonstrate that this technique is more effective than normal Carius tube technique for ultramafic rocks and chromites containing refractory minerals and the detection limits and precision can be improved for PGE poor mafic samples. The total procedural blanks are lower than 0.003 ng for Os, 0.03 ng for Re, Ir, Ru and Rh and 0.4 ng for Pd and Pt. Copyright © 2007 by The Geochemical Society of Japan.en_HK
dc.languageengen_HK
dc.publisherBusiness Center for Academic Societies Japan.en_HK
dc.relation.ispartofGeochemical Journalen_HK
dc.subjectCarius tubeen_HK
dc.subjectHigh pressure autoclaveen_HK
dc.subjectICP-MSen_HK
dc.subjectPGEsen_HK
dc.subjectRheniumen_HK
dc.titleEvaluation of a technique for determining Re and PGEs in geological samples by ICP-MS coupled with a modified Carius tube digestionen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0016-7002&volume=41&spage=407&epage=414&date=2007&atitle=Evaluation+of+a+technique+for+determining+Re+and+PGEs+in+geological+samples+by+ICP-MS+coupled+with+a+modified+Carius+tube+digestion.+en_HK
dc.identifier.emailZhou, MF:mfzhou@hkucc.hku.hken_HK
dc.identifier.emailSun, M:minsun@hku.hken_HK
dc.identifier.authorityZhou, MF=rp00844en_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-38549088479en_HK
dc.identifier.hkuros144182en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-38549088479&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume41en_HK
dc.identifier.issue6en_HK
dc.identifier.spage407en_HK
dc.identifier.epage414en_HK
dc.publisher.placeJapanen_HK
dc.identifier.scopusauthoridQi, L=7202149924en_HK
dc.identifier.scopusauthoridZhou, MF=7403506005en_HK
dc.identifier.scopusauthoridWang, CY=35849436700en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK

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