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Issue 12, 2015
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Removal of spectral interferences on noble metal elements using MS/MS reaction cell mode of a triple quadrupole ICP-MS

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Abstract

The trace level analysis of the eight noble metal elements by inductively coupled plasma mass spectrometry (ICP-MS) is hindered by the formation of polyatomic ion interferences; those elements are ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), osmium (Os), iridium (Ir), platinum (Pt) and gold (Au). The resolution capabilities of sector field ICP-MS is insufficient to resolve some of the interferences. A new strategy using a triple quadrupole ICP-MS (ICP-QQQ) with highly reactive ammonia gas (NH3) is presented. The tandem MS configuration of the instrument allows unprecedented control over the ions that enter the collision reaction cell, and therefore ensures consistent reaction processes in the cell, even when the sample composition is complex and variable. Eight noble metal elements spiked at the 1 ng g−1 level in a complex solution containing Cu, Zn, Ni, Mo, Y, Sr, Rb, Zr, Nb, Pb, Hg (1 μg g−1), Ta, W, Hf and REEs at 10 μg g−1 were accurately quantified by removing the spectral interferences with the NH3 reaction cell of the ICP-QQQ.

Graphical abstract: Removal of spectral interferences on noble metal elements using MS/MS reaction cell mode of a triple quadrupole ICP-MS

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Publication details

The article was received on 03 Aug 2015, accepted on 14 Oct 2015 and first published on 28 Oct 2015


Article type: Paper
DOI: 10.1039/C5JA00308C
Citation: J. Anal. At. Spectrom., 2015,30, 2481-2487
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    Removal of spectral interferences on noble metal elements using MS/MS reaction cell mode of a triple quadrupole ICP-MS

    N. Sugiyama and Y. Shikamori, J. Anal. At. Spectrom., 2015, 30, 2481
    DOI: 10.1039/C5JA00308C

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