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Application of addition HClO4 to improve the dissolution process and sensitivity of Os for low-concentration of Os in pyrite
Gao, Bingyu1,2; Li, Wenjun1,2; Jin, Xindi3; Zhang, Lianchang1
2019-11-01
Source PublicationMICROCHEMICAL JOURNAL
ISSN0026-265X
Volume150Pages:5
AbstractThe rhenium (Re) and osmium (Os) isotope systems have long been recognized as effective tools to directly date mineralization and trace the source of metals. In general, 0.4 g of pyrite was dissolved by 11 mL of inverse aqua regia in a 30-mL Carius tube. Larger volumes of acids and a larger Carius tube were required if the sample weight was over 0.4 g. Herein we present an improved dissolution process of the Carius tube digestion method by adding HClO4 to dissolve larger sample weights in smaller volumes of acid. This approach is more suitable for determining low concentrations of Os in metal sulfides. In detail, 0.4 g of pyrite was completely dissolved in a mixture of 1 mL of HClO4 and 3 mL of inverse aqua regia. Notably, addition of 1 mL of HClO4 to 8 mL of inverse aqua regia significantly increases the amount of sample from 0.4 to 0.8 g. Based on our data, while the sample weight was no > 0.8 g, addition of 1 mL of HClO4 to inverse aqua regia can not only improve the dissolving capacity significantly, but also avoid Carius tube explosion. Furthermore, the dissolving capacity of HClO4-inverse aqua regia method is much higher than that of H2O2-inverse aqua regia method, which is a typical digestion method for Re-Os dating. This method was certified by reference materials (HLP and JDC). In brief, this new method allows dissolution of larger amounts of sample while consuming less acid. Therefore, this method has more potential for determining low concentrations of Re and Os in metal sulfides.
KeywordRe-Os isotope system Pyrite HClO4 H2O2
DOI10.1016/j.microc.2019.104165
Funding OrganizationNational Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project
WOS KeywordRE-OS ; GOLD MINERALIZATION ; BROOKS RANGE ; OSMIUM ; SYSTEMATICS ; RHENIUM ; GEOCHRONOLOGY ; DEPOSIT ; AGE ; CONSTRAINTS
Language英语
Funding ProjectNational Natural Science General Project[41603016] ; National Natural Science General Project[41373063]
Funding OrganizationNational Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical
WOS IDWOS:000495469400087
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95727
Collection矿产资源研究院重点实验室
岩石圈演化国家重点实验室
Corresponding AuthorGao, Bingyu
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
First Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Gao, Bingyu,Li, Wenjun,Jin, Xindi,et al. Application of addition HClO4 to improve the dissolution process and sensitivity of Os for low-concentration of Os in pyrite[J]. MICROCHEMICAL JOURNAL,2019,150:5.
APA Gao, Bingyu,Li, Wenjun,Jin, Xindi,&Zhang, Lianchang.(2019).Application of addition HClO4 to improve the dissolution process and sensitivity of Os for low-concentration of Os in pyrite.MICROCHEMICAL JOURNAL,150,5.
MLA Gao, Bingyu,et al."Application of addition HClO4 to improve the dissolution process and sensitivity of Os for low-concentration of Os in pyrite".MICROCHEMICAL JOURNAL 150(2019):5.
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