Spectral Interferences of Some Polyatomic Ions in the Determination of Traces of Platinum Metals and Gold in Geological Samples by Inductively Coupled Plasma Mass Spectrometry
O. A. Tyutyunnik, S. N. Nabiullina, I. V. Kubrakova, M. O. Anosova
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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.
期刊介绍：
The Journal of Analytical Chemistry is an international peer reviewed journal that covers theoretical and applied aspects of analytical chemistry; it informs the reader about new achievements in analytical methods, instruments and reagents. Ample space is devoted to problems arising in the analysis of vital media such as water and air. Consideration is given to the detection and determination of metal ions, anions, and various organic substances. The journal welcomes manuscripts from all countries in the English or Russian language.
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