Effect of Matrix Element and Acid on Analytical Signals in Nitrogen Microwave-Plasma Atomic Emission Spectrometry

E. V. Polyakova, Yu N. Nomerotskaya, A. I. Saprykin

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The effect of matrix elements (Na, In, Bi, Zn, Cu) and nitric and hydrochloric acids on the analytical signals of impurity elements in nitrogen microwave-plasma atomic emission spectrometry (MP AES) was studied. In the range of acid concentrations 0.1–0.5 M (for rare-earth elements, 0.1–0.9 M), the analytical signals of the elements did not change. The presence of a matrix element in a concentration of 1 wt % led to a significant change in the signal for most elements, which must be taken into account in selecting a calibration strategy. In MP AES, it is necessary to fully comply with the conformity of samples and calibration solutions regarding the type and concentration of acid and matrix elements.

Original languageEnglish
Pages (from-to)474-478
Number of pages5
JournalJournal of Analytical Chemistry
Volume75
Issue number4
DOIs
Publication statusPublished - 13 Apr 2020

Keywords

  • acid
  • atomic emission spectrometry
  • impurities
  • matrix effect
  • nitrogen microwave plasma

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