Study interaction between humic acids and metal ions using fluorescence quenching approach

Olga N. Tchaikovskaya; Nataly V. Yudina; Elizaveta V. Linkevich; Anna V. Savelyeva; L. V. Nechaev

doi:10.1117/12.2305310

16 April 2018 Study interaction between humic acids and metal ions using fluorescence quenching approach

Olga N. Tchaikovskaya, Nataly V. Yudina, Elizaveta V. Linkevich, Anna V. Savelyeva, L. V. Nechaev

Proceedings Volume 10614, International Conference on Atomic and Molecular Pulsed Lasers XIII; 106140A (2018) https://doi.org/10.1117/12.2305310
Event: XIII International Conference on Atomic and Molecular Pulsed Lasers, 2017, Tomsk, Russia

Abstract

The interaction of humic acids (HA) isolated from oxidized and brown coals with copper, nickel, and cadmium ions is investigated. The complexation constant of HA with heavy metal ions is determined using the fluorescence quenching method. It is shown that preliminary mechanic activation of humic-containing substances increases the binding coefficients of HA with copper and nickel ions in 1.5 to 3.5 times, as compared to cadmium ions, for which the values of the fluorescence quenching constant К_SV decrease. This is due not only to structural changes in HA after the mechanic activation, but also to the nature of metal ions.

Citation Download Citation

Olga N. Tchaikovskaya, Nataly V. Yudina, Elizaveta V. Linkevich, Anna V. Savelyeva, and L. V. Nechaev "Study interaction between humic acids and metal ions using fluorescence quenching approach", Proc. SPIE 10614, International Conference on Atomic and Molecular Pulsed Lasers XIII, 106140A (16 April 2018); https://doi.org/10.1117/12.2305310

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