Preconcentration of uranium(VI) on a chelating adsorbent followed by photometric determination with 2,3,4-trihydroxy-3′-nitro-4′-sulfoazobenzene

Магеррамов, А. М.; Гаджиева, Севиндж Рафик; Бахманова, Ф. Н.; Gamidov, S. Z.; Chyragov, F. M.

doi:10.1134/s1061934811050108

Cited by 8 publications

(1 citation statement)

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“…Methods for determining uranium in seawater have been developed. [12,13] Meloxicam was used to determine uranium in a synthetic mixture and soil samples. [14] Many of the proposed methods are not sufficiently selective, so that in these cases a preliminary separation of uranium is required.…”

Section: Introductionmentioning

confidence: 99%

Mixedligand complexes of uranium (VI) with dithiolophenols and hydrophobic amines in photometric analysis

Kuliev

Zalov

Aliev

et al. 2020

Vietnam Journal of Chemistry

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In this paper we studied the interaction of uranium (VI) with with dithiolphenols (2,6‐dithiophenol, 2,6‐dithiol‐4‐methylphenol, 2,6‐dithiol‐4‐ethylphenol, 2,6‐dithiol‐4‐tert‐butylphenol), and hydrophobic amines by absorption spectroscopy method. The sudied hydrophobic amines are aniline, N–methylaniline, N,N–dimethylaniline, diphenylguanidine, triphenylguanidine, benzylamine, phenantrolin, dipyridyl, p‐aninopyridin, 2‐(N,N‐dimethylaminomethyl)‐4‐methylphenol and 2‐(N,N‐dimethylaminomethyl)‐4‐bromphenol. The optimal conditions for the formation and extraction of ionic associates were found and the ratios of components in the complexes were established. It was found that associates are formed in a weakly acidic medium (pHopt = 3.5‐7.1). The maxima in the light absorption spectra are observed at λ = 434‐478 nm. Molar coefficient of absorption is equal ε = (2.65‐3.62)•104. On the basis of the obtained data, photometric methods of uranium determination in various objects have been developed.

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Section: Introductionmentioning

confidence: 99%