High-precision Determination of Gold Mass Fractions in Geological Reference Materials by Internal Standardisation
文献类型：期刊论文
| 作者 | Cheng, Huai1; Wang, Zaicong1; Chen, Kang1; Zong, Keqing1; Zou, Zongqi1; He, Tao1; Hu, Zhaochu1; Fischer-Goedde, Mario2; Liu, Yanhong3 |
| 刊名 | GEOSTANDARDS AND GEOANALYTICAL RESEARCH
 |
| 出版日期 | 2019-07-30 |
| 页码 | 18 |
| 关键词 | gold platinum-group elements reference materials internal standardisation standard addition sample heterogeneity |
| ISSN号 | 1639-4488 |
| DOI | 10.1111/ggr.12284 |
| 英文摘要 | Determination of gold abundances in natural rock is critical for applications, but very challenging. Here, we report a method for determining gold with a very low mass fraction (> 0.01 ng g(-1)) in rocks. The method involves Carius tube digestion with reverse aqua regia, chromatographic separation to remove most of the sample matrix and measurement by high-sensitivity ICP-MS. The mono-isotopic element gold was quantified by external calibration using an internal standardisation of gold to platinum that was precisely determined by isotope dilution. The method is robust and the obtained results are indistinguishable (< 5-10%, 2s) from those independently obtained by a standard addition technique on the same solution. The results from reference materials TDB-1 and GPt-2 are consistent with the certified values and those determined by HF-aqua regia digestion, confirming the validity of the method. TDB-1 (n = 20), GPt-2 (n = 6), BHVO-2 (n = 9) and other mafic RMs are homogenous for gold (10-20%, 2s) at the 2 g test portion level; however, sample heterogeneity affects some RMs. Gold and platinum-group elements also display different extents of sample heterogeneity for different RMs. Given the homogeneity observed for TDB-1, GPt-2 and BHOV-2, they are recommended as well-suited RMs for inter-laboratory comparison studies of gold. |
| WOS关键词 | PLATINUM-GROUP ELEMENTS ; GEOCHEMICAL REFERENCE SAMPLES ; DILUTION ICP-MS ; NIS FIRE-ASSAY ; SIDEROPHILE ELEMENTS ; ISOTOPE-DILUTION ; TE COPRECIPITATION ; PERIDOTITE MASSIFS ; TRACE-ELEMENTS ; UPPER-MANTLE |
| 资助项目 | National Key R&D Program of China[2016YFC0600103] ; National Science Foundation of China[41722302] ; National Science Foundation of China[41673027] ; National Science Foundation of China[41703034] ; Chinese Fundamental Research Funds for the Central Universities[CUG170602] ; MOST Special Fund from GPMR-CUG[MSFGPMR10] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000479826200001 |
| 出版者 | WILEY |
| 资助机构 | National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Fundamental Research Funds for the Central Universities ; Chinese Fundamental Research Funds for the Central Universities ; MOST Special Fund from GPMR-CUG ; MOST Special Fund from GPMR-CUG ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Fundamental Research Funds for the Central Universities ; Chinese Fundamental Research Funds for the Central Universities ; MOST Special Fund from GPMR-CUG ; MOST Special Fund from GPMR-CUG ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Fundamental Research Funds for the Central Universities ; Chinese Fundamental Research Funds for the Central Universities ; MOST Special Fund from GPMR-CUG ; MOST Special Fund from GPMR-CUG ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Fundamental Research Funds for the Central Universities ; Chinese Fundamental Research Funds for the Central Universities ; MOST Special Fund from GPMR-CUG ; MOST Special Fund from GPMR-CUG |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/93328]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Wang, Zaicong |
| 作者单位 | 1.China Univ Geosci, Sch Earth Sci, State Key Lab Geol Proc & Mineral Resources, 388 Lumo Rd, Wuhan 430074, Hubei, Peoples R China 2.Univ Cologne, Inst Geol & Mineral, Zulpicher Str 49b, D-50674 Cologne, Germany 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Huai,Wang, Zaicong,Chen, Kang,et al. High-precision Determination of Gold Mass Fractions in Geological Reference Materials by Internal Standardisation[J]. GEOSTANDARDS AND GEOANALYTICAL RESEARCH,2019:18. |
| APA | Cheng, Huai.,Wang, Zaicong.,Chen, Kang.,Zong, Keqing.,Zou, Zongqi.,...&Liu, Yanhong.(2019).High-precision Determination of Gold Mass Fractions in Geological Reference Materials by Internal Standardisation.GEOSTANDARDS AND GEOANALYTICAL RESEARCH,18. |
| MLA | Cheng, Huai,et al."High-precision Determination of Gold Mass Fractions in Geological Reference Materials by Internal Standardisation".GEOSTANDARDS AND GEOANALYTICAL RESEARCH (2019):18. |
入库方式： OAI收割
来源：地质与地球物理研究所
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