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Irina V. Nikolaeva, Stanislav V. Palesskiy, Anna
A. Kravchenko
Evaluation of the matrix effect and selection of reference
samples for the ICP-MS trace elements determination in geological samples
Abstract
In
this work, the need of the non-spectral matrix effects assessment was
experimentally evaluated for determination of 17 trace elements in solutions of
geological samples by inductively coupled
plasma mass spectrometry (ICP-MS) in order to reduce the analysis error. Comparison
of the ICP-MS results obtained with different reference samples for external
calibration is carried out. As reference samples we used the multielement
solutions in nitric acid, these solutions with the addition of lithium
metaborate for simulate the matrix and solution of reference geological
material – BHVO-1 with an internal standard (In). It was found that the use of
BHVO-1 solution as matching calibration provides ICP-MS results with the minimal errors for all 17
elements in all geological samples.
Key words: inductively coupled plasma mass spectrometry
(ICP-MS), non-spectral matrix effects, external calibration, reference
materials.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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