Electrothermal atomic absorption spectrometry in direct determination of tin in brines, sodium chloride and table salt samples

doi:10.26565/2220-637X-2016-27-09

Oleg I. Yurchenko V.N. Karazin Kharkiv National University https://orcid.org/0000-0002-7117-4556
Aleksandr N. Baklanov V.N. Karazin Kharkiv National University https://orcid.org/0000-0001-9396-5204
Larysa V. Baklanova V.N. Karazin Kharkiv National University https://orcid.org/0000-0002-2051-0492
Tetiana V. Chernozhuk V.N. Karazin Kharkiv National University https://orcid.org/0000-0001-5580-7838

DOI: https://doi.org/10.26565/2220-637X-2016-27-09

Keywords: electrothermal atomic absorption spectrometry, tin, limit of detection, brines, sodium chloride, table salt, chemical modificators

Abstract

The procedure of direct electrothermal atomic absorption determination of tin with detection limit of 0.4 μg/dm³ in brines and 0.008 μg/dm³ in table salt and sodium chloride samples was developed. The matrix chemical modificator (CM) was applied for elimination of depressive effects of chlorides. The following CMs were tested: ammonium and palladium nitrates, ascorbic, lemon, wine and oxalic acids, fructose, 8-hydroxyquinoline and sodium diethyldithiocarbaminate. The mixture of ascorbic acid with ammonium and palladium nitrates was found the best CM with the highest metrological characteristics.

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