Application of High-Resolution Continuum Source Molecular Absorption Spectrometry for the Determination of Nitrite and Nitrate Nitrogen

Authors

  • M. Němeček Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak Technical University, Bratislava, Slovakia
  • Ľ. Machyňák Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak Technical University, Bratislava, Slovakia
  • E. Beinrohr Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak Technical University, Bratislava, Slovakia
  • F. Čacho Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak Technical University, Bratislava, Slovakia
  • P. Horváth Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak Technical University, Bratislava, Slovakia

Keywords:

nitrites, nitrates, molecular absorption spectrometry, HR-CS GF MAS

Abstract

A simple, fast and reliable analytical method was developed for nitrite and nitrate determination by high-resolution continuum source electrothermal molecular absorption spectrometry by making use of the NO molecule. The NO spectral line at 215.360 nm was used for analytical measurements. A volume of 20 μL of standard solution or water sample was injected into the graphite furnace and 5 μL of the 1% (m/v) Ca solution was co-injected as a chemical modifier. The pyrolysis and vaporization temperatures were 160 °C and 1300 °C, respectively. The certified reference material data obtained by flow-through coulometry are in good agreement with those measured by HR-CS GFMAS. The results obtained by analyzing a certified reference material imply the suitability of the determination of total nitrite and nitrate nitrogen using the NO molecule.

Published

2017-09-15

How to Cite

Němeček, M., Machyňák, Ľ., Beinrohr, E., Čacho, F., & Horváth, P. (2017). Application of High-Resolution Continuum Source Molecular Absorption Spectrometry for the Determination of Nitrite and Nitrate Nitrogen. Chemické Listy, 111(9), 588–590. Retrieved from http://chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/45

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Section

Articles