Luminescence Determination of Copper(I), Silver(I), Gold(I), and Platinum(II) Using 2-Mercapto-5-Benzimidazolesulfonic Acid, also Immobilized on a Silica Surface

2-Mercapto-5-benzimidazolesulfonic acid (MBI), also noncovalently bound to a silica surface, is proposed as a reagent for the low-temperature luminescence determination of Cu(I), Ag(I), Au(I), and Pt(II). Luminescence excitation and luminescence spectra of metal complexes with MBI in solutions and o...

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Bibliographic Details
Published in:Journal of analytical chemistry (New York, N.Y.) N.Y.), 2018, Vol.73 (1), p.50-57
Main Authors: Losev, V. N., Metelitsa, S. I., Didukh, S. L., Kashkevich, A. I., Trofimchuk, A. K., Siryk, E. A.
Format: Article
Language:English
Subjects:
Adsorbents
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Coordination compounds
Copper
Excitation spectra
Gold
Luminescence
Platinum
Silicon dioxide
Silver
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Summary:2-Mercapto-5-benzimidazolesulfonic acid (MBI), also noncovalently bound to a silica surface, is proposed as a reagent for the low-temperature luminescence determination of Cu(I), Ag(I), Au(I), and Pt(II). Luminescence excitation and luminescence spectra of metal complexes with MBI in solutions and on the adsorbent surface represent broad unstructured bands in the regions 250–400 and 450–700 nm, respectively. The developed procedures for the luminescence and sorption–luminescence determination of Cu, Ag, Au, and Pt with limits of detection at a level of 0.001–0.01 μg on 0.1 g of adsorbent are tested in the determination of metals in natural and industrial samples.
ISSN:1061-9348
1608-3199
DOI:10.1134/S1061934818010045