Sorption–Photometric Determination of Osmium after Its Extraction from the Gas Phase with Silica Gel Chemically Modified with Mercapto Groups

Лосев, В. Н.; Bakhvalova, I. P.; Kudrina, Yu. V.; Трофимчук, А. К.

doi:10.1023/b:janc.0000037272.46701.54

Journal of Analytical Chemistry

2004

DOI: 10.1023/b:janc.0000037272.46701.54

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Sorption–Photometric Determination of Osmium after Its Extraction from the Gas Phase with Silica Gel Chemically Modified with Mercapto Groups

В. Н. Лосев¹,

I. P. Bakhvalova²,

Yu. V. Kudrina³

et al.

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“…It can be solved using selective organic reagents. Their use offers new possibilities for electrochemical and spectrophotometric methods of analysis [1][2][3]. Only a few procedures are available for the titrimetric determination of osmium.…”

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confidence: 99%

Complexation of Osmium(IV) with 3-Methyl-2,6-Dimercapto-1-Thiopyrone-4 and Its Catalytic Application

Chmilenko

Khudyakova

2005

J Anal Chem

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The reaction of osmium(IV) with 3-methyl-2,6-dimercapto-1-thiopyrone-4 was studied by spectrometry, amperometry, and potentiometry. In a pH range of 2-4 M HCl (2 M H 2 SO 4 ), insoluble osmium methyl thiopyrone dimercaptides formed with a metal-to-ligand ratio of 1 : 1, 1 : 2, 1 : 3, 1 : 4, and 1 : 6 in HCl solutions and of 1 : 1, 1 : 2, 1 : 3, and 1 : 5 in H 2 SO 4 solutions. Conditional stability constants and molar absorption coefficients were determined for the products formed in the presence of excess reagent ( n = 3, P = 0.95): log β = 24.42 ± 0.02 and ε = (2.95 ± 0.01) × 10 4 for the 1 : 5 complex and log β = 30.24 ± 0.10 and ε = (2.92 ± 0.01) × 10 4 for the 1 : 6 complex. It was shown that the reagent can be used for the potentiometric titration of osmium(IV). Conditions were determined for the successive titration of components of the osmium(IV)-ruthenium(IV) mixture.

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confidence: 99%

Complexation of Osmium(IV) with 3-Methyl-2,6-Dimercapto-1-Thiopyrone-4 and Its Catalytic Application

Chmilenko

Khudyakova

2005

J Anal Chem

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Preconcentration and determination of osmium(VIII) using silicas chemically modified with sulfur-containing groups

et al. 2015

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Chemically Modified Silica in Sorption-Instrumental Analytical Methods

Лисичкин

Olenin

2021

Russ J Gen Chem

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Sorption–Photometric Determination of Osmium after Its Extraction from the Gas Phase with Silica Gel Chemically Modified with Mercapto Groups

Cited by 3 publications

References 0 publications

Complexation of Osmium(IV) with 3-Methyl-2,6-Dimercapto-1-Thiopyrone-4 and Its Catalytic Application

Complexation of Osmium(IV) with 3-Methyl-2,6-Dimercapto-1-Thiopyrone-4 and Its Catalytic Application

Preconcentration and determination of osmium(VIII) using silicas chemically modified with sulfur-containing groups

Chemically Modified Silica in Sorption-Instrumental Analytical Methods

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