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The importance of post-analysis data processing in ICP-AES: calibration adjustment and multi-line approaches

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Abstract

This study presents post-analysis data processing that can be used in Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES). Two complementary methods were developed: the optimisation of the calibration curve and the use of the “Total Sum model”. In order to work on a Certified Reference Material, the CETAMA “EQRAIN 22” solution was used. First, the effect of the computation model used was evaluated. The Total Sum model was developed using two approaches: a “classical” weighted mean and the “excess variance” weighted mean. The results show a decrease by a factor of about 4 for iron, and 2 for arsenic and palladium in uncertainties. Then, the effect of the calibration solution on both result uncertainties and method detection limits was studied. The study shows that using the appropriate calibration can reduce them by a factor of 10. Such results lead to a total gain in detection limits by a factor of about 30.

Graphical abstract: The importance of post-analysis data processing in ICP-AES: calibration adjustment and multi-line approaches

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Publication details

The article was received on 25 Jun 2018, accepted on 29 Aug 2018 and first published on 03 Sep 2018


Article type: Paper
DOI: 10.1039/C8JA00214B
Citation: J. Anal. At. Spectrom., 2018, Advance Article
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    The importance of post-analysis data processing in ICP-AES: calibration adjustment and multi-line approaches

    S. Baghdadi, M. Crozet, S. Gracia, J. L. Dautheribes, C. Rivier and S. Picart, J. Anal. At. Spectrom., 2018, Advance Article , DOI: 10.1039/C8JA00214B

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