Mapping of Sulfur Isotopes and Trace Elements in Sulfides by LA-(MC)-ICP-MS: Potential Analytical Problems, Improvements and Implications
Mapping of Sulfur Isotopes and Trace Elements in Sulfides by LA-(MC)-ICP-MS: Potential Analytical Problems, Improvements and Implications
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通过 LA-(MC)-ICP-MS 绘制硫化物中的硫同位素和微量元素：潜在的分析问题、改进和启示
DOI：
10.3390/min6040110
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发表时间：
2016-10
期刊：
影响因子：
2.5
通讯作者：
Jiang Shao-Yong
中科院分区：
文献类型：
--
作者：
Zhu Zhi-Yong;Cook Nigel;Yang Tao;Ciobanu Cristiana;Zhao Kui-Dong;Jiang Shao-Yong
激光烧蚀电感耦合等离子体质谱（LA-ICP-MS）对硫化物矿物（尤其是黄铁矿）痕量元素和硫(S)同位素精确定量分析的限制目前还不完全清楚。在含有多种矿物的复杂样品中绘制S同位素分布图需要对基质效应和准确性进行评估。本文采用LA-Q（四极杆）-ICP-MS和LA-MC（多收集器）-ICP-MS方法分析硫化物中的微量元素和S同位素。对S同位素进行了现场分析，以评价基质效应的影响。在本研究的精度下，菱铁矿和磁铁矿的基质效应在作图分析中被认为可以忽略不计。用Fe和S作为内标元素，对黄铁矿中微量元素的浓度进行了规范化。铁被证明是更好的选择，因为铁与微量元素的归一化计数每秒比比使用S稳定得多。以江西城门山铜矿硫化物样品为例，证明了LA-(MC)- icp - ms联合S同位素和微量元素作图的潜力。结果表明，该矿床经历了多期成矿作用。金、银等元素在早期黄铁矿中赋存，但在后期热液活动中被重新富集成多组分硫化物组合，这也导致了含黄铁矿的横切脉中除硒外大部分缺乏微量元素。将原位S同位素分析与微量元素分析相结合，是认识成矿过程的有力工具。
Constraints on accurate quantitative trace element and sulfur (S) isotope analysis of sulfide minerals, especially pyrite, by laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) remain imperfectly understood at the present time. Mapping of S isotope distributions within a complex sample containing several minerals requires an evaluation of the matrix effects and accuracy. Here, we apply LA-Q(quadrupole)-ICP-MS and LA-MC(multiple collector)-ICP-MS methods to analyze trace elements and S isotopes in sulfides. Spot analysis of S isotopes was conducted to evaluate the influence of matrix effects. The matrix effects from siderite and magnetite are deemed to be negligible in mapping analysis at the precision of this study. Both Fe and S were used as internal standard elements to normalize trace element concentrations in pyrite. Fe proved to be the better choice because the normalized counts per second ratio of trace elements with Fe is much more stable than if using S. A case study of a sulfide sample from the Chengmenshan Cu deposit, Jiangxi Province, South China, demonstrates the potential of combined S isotope and trace element mapping by LA-(MC)-ICP-MS. The results suggest that this deposit underwent multi-stage ore formation. Elements, including Au and Ag, were hosted in early-stage pyrite but were re-concentrated into multi-component sulfide assemblages during a late-stage hydrothermal event, which also led to crosscutting veins containing pyrite largely devoid of trace elements, except Se. Combining in situ S isotope and trace element analysis on the same sample represents a powerful tool for understanding ore-forming processes.
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影响因子：
3.9
作者：
Craddock, Paul R.;Rouxel, Olivier J.;Bach, Wolfgang
通讯作者：
Bach, Wolfgang
激光烧蚀过程中黄铁矿中的硫同位素分馏：激光烧蚀多收集器电感耦合等离子体质谱图的影响
影响因子：
3.9
作者：
Zhu Zhi Yong;Jiang Shao Yong;Ciobanu Cristiana L;Yang Tao;Cook Nigel J
通讯作者：
Cook Nigel J
钙对多接收器电感耦合等离子体质谱高精度硫同位素测量的基质效应
影响因子：
6.1
作者：
Liu Chenhui;Bian Xiao-Peng;Yang Tao;Lin An-Jun;Jiang Shao-Yong
通讯作者：
Jiang Shao-Yong
DOI：
--
发表时间：
2011
期刊：
Acta Geological Sinica
影响因子：
--
作者：
Jiang Shaoyong
通讯作者：
Jiang Shaoyong
影响因子：
3.9
作者：
Chew, David M.;Babechuk, Michael G.;McKenna, Cora A.
通讯作者：
McKenna, Cora A.