Abstract

To improve the accuracy of determining low (ng/g) concentrations of noble metals (Au, Pd, Pt, Rh, Ru, and Ir) in geological samples, we experimentally assessed mass spectral overlapping due to certain rock components. It was found that the ion exchange separation of the matrix does not eliminate the interferences from Zr, Hf, and Ta oxides, and in some cases, the complete removal of these elements from the test solution is required. An analysis of SRMs SChS-1, SLg-1, TDB-1, OPY-1, and SBC-1 demonstrated that the use of a Ln-resin as an additional sorbent in combination with the subsequent ICP–MS determination in the low and/or medium resolution mode offers promise.

中文翻译：

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电感耦合等离子体质谱法测定地质样品中痕量铂金属和金的光谱干扰

 抽象

为了提高测定地质样品中低 （ng/g） 浓度贵金属（Au、Pd、Pt、Rh、Ru 和 Ir）的准确性，我们实验评估了由于某些岩石成分引起的质谱重叠。研究发现，基质的离子交换分离并不能消除 Zr、Hf 和 Ta 氧化物的干扰，在某些情况下，需要从测试溶液中完全去除这些元素。对 SRM SChS-1、SLg-1、TDB-1、OPY-1 和 SBC-1 的分析表明，在低分辨率和/或中分辨率模式下使用 Ln 树脂作为附加吸附剂，并结合随后的 ICP-MS 测定，前景广阔。