Extraction-spectrophotometric study on the vanadium(V)-2,3-dihydroxynaphthalene — iodonitrotetrazolium chloride — water — chloroform system and its analytical application-Reference-Cited by-同舟云学术

Extraction-spectrophotometric study on the vanadium(V)-2,3-dihydroxynaphthalene — iodonitrotetrazolium chloride — water — chloroform system and its analytical application

Published:2006-06-01 Issue:2 Volume:4 Page:258-265
ISSN:2391-5420
Container-title:Open Chemistry
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Author:

Simeonova Zhivka¹,Gavazov Kiril¹,Alexandrov Alexander¹

Affiliation:

1. 1Department of General and Inorganic Chemistry, Plovdiv University, 4000, Plovdiv, Bulgaria

Abstract

AbstractThe formation of a new ternary ion-associate complex of vanadium(V) with 2,3-dihydroxynaphthalene and iodonitrotetrazolium chloride with a composition ratio of 1:2:1 is reported. The complex is quantitatively extracted from water into chloroform. The molar absorptivity (ɛ) of the extract at λ max=340 nm is 2.5 × 104 dm3/mol cm, and Beer’s law is obeyed for concentrations ranging from 0.1 to 0.9 µg/cm3 V(V). The following constants are determined: the extraction constant, the association constant, the distribution constant, and the recovery factor. The effects of foreign ions and reagents are studied. A selective and sensitive method is developed for determination of vanadium in steels.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,General Chemistry

Link

http://link.springer.com/content/pdf/10.2478/s11532-006-0011-7.pdf

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5. K. Gavazov, Zh. Simeonova and A. Alexandrov: “Extraction-spectrophotometric study of the system vanadium(V) — 4-(2-pyridylazo)resorcinol — 2,2′,5,5′-tetraphenyl-3,3′-(p-biphenyl)ditetrazolium chloride — water — chloroform. Determination of vanadium in steels”, Anal. Lab., Vol. 7, (1998), pp. 127–133.

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