THE ROLE OF THE 2,7-DINITROSO-1,8-DIHYDROXYNAPHTHALENE-3,6-DISULFONIC ACID REAGENT IN DETERMINING THE THORIUM ION (IV)

Authors

Nigora QUTLIMUROTOVA, Natiоnal University оf Uzbekistan, Tashkent, UzbekistanFollow
Salohiddin MAHMADOLIYEV, National University of Uzbekistan, Tashkent, UzbekistanFollow
Khabibullo TODJIMUKHAMEDOV, National University of Uzbekistan, Tashkent, UzbekistanFollow

Abstract

The aim is to develop a method for the amperometric determination of thorium (IV) ion with 2,7-dinitroso-1,8-dihydroxynaphthalene-3,6-disulfoxyl reagent. Methods of amperometric determination of thorium by solution of 2,7-dinitrozo-1,8-dihydroxynaphthalene-3,6-disulfonic acid on different acid-base properties of background electrolytes and buffer mixtures are considered. The half-wave potential of new reagent was found by logarithmic analysis equal 0.72 V at pH 2.82, which once again indicates on the irreversibility of the process of electrooxidation of the studied organic reagent in used acid-base medias. The conditions for amperometric titration of thorium are optimized, and the influence of outside accompanying metals on the shape of curves and the results of its determination are investigated.

Recommended Citation

QUTLIMUROTOVA, Nigora; MAHMADOLIYEV, Salohiddin; and TODJIMUKHAMEDOV, Khabibullo (2021) "THE ROLE OF THE 2,7-DINITROSO-1,8-DIHYDROXYNAPHTHALENE-3,6-DISULFONIC ACID REAGENT IN DETERMINING THE THORIUM ION (IV)," CHEMISTRY AND CHEMICAL ENGINEERING: Vol. 2021: No. 1, Article 10.
DOI: https://doi.org/10.51348/MHSA3146
Available at: https://cce.researchcommons.org/journal/vol2021/iss1/10