Abstract

A procedure is developed for determining trace amounts of Pt, Pd, Rh, Ru, Ir, and Au in ultrabasic rocks by inductively coupled plasma mass spectrometry. Chemical sample preparation included acid decomposition, separation of the main matrix components on an AG-X8 cation exchanger, and the subsequent separation of Zr, Hf, and Ta on an LN-Rezin complexing adsorbent. The limits of detection for Ru, Pd, Ir, Pt, Rh, and Au were 0.06, 0.2, 0.003, 0.4, 0.1, and 0.2 ng/g, respectively; the relative standard deviation in the determination of elements in the samples varies from 8 to 20% for Au, 2 to 9% for Pd, from 1 to 6% for Pt, from 1 to 4% for Ir, from 1 to 18% for Rh, and from 3 to 7% for Ru. The accuracy of the results is confirmed by their comparison with the published data for samples of HARZ01 harzburgite and OPY-1 ultrabasic rock, obtained in the framework of the international GeoPT program.

中文翻译：

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AG-X8和LN-树脂吸附剂电感耦合等离子体质谱法测定超碱性岩石中的痕量铂族元素和金

摘要

开发了一种通过电感耦合等离子体质谱法测定超碱性岩石中痕量Pt，Pd，Rh，Ru，Ir和Au的方法。化学样品的制备包括酸分解，在AG-X8阳离子交换剂上分离主要基质成分以及随后在LN-Rezin络合吸附剂上分离Zr，Hf和Ta。Ru，Pd，Ir，Pt，Rh和Au的检出限分别为0.06、0.2、0.003、0.4、0.1和0.2 ng / g；样品中元素测定的相对标准偏差为：Au为8％至20％，Pd为2％至9％，Pt为1％至6％，Ir为1％至4％，Ind为1％至18％ Rh，Ru为3％至7％。通过与已发布的HARZ01 harzburgite和OPY-1超基性岩石样品的数据进行比较，证实了结果的准确性。