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

• Autorzy: Zhivka Simeonova , Kiril Gavazov , Alexander Alexandrov
• Języki publikacji: EN

Abstrakty

EN

The 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.

Słowa kluczowe

EN

Vanadium(V); ion-associate complex; 2,3-dihydroxynaphthalene; iodonitrotetrazolium chloride; extraction-spectrophotometric determination; steel

• Czasopismo: Open Chemistry
• Rocznik: 2006
• Tom: 4
• Numer: 2
• Strony: 258-265

Daty

wydano

2006-06-01

online

2006-06-01

Twórcy

autor

Zhivka Simeonova

• Department of General and Inorganic Chemistry, Plovdiv University, 4000, Plovdiv, Bulgaria

autor

Kiril Gavazov

• Department of General and Inorganic Chemistry, Plovdiv University, 4000, Plovdiv, Bulgaria,

autor

Alexander Alexandrov

• Department of General and Inorganic Chemistry, Plovdiv University, 4000, Plovdiv, Bulgaria

Bibliografia

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Identyfikatory

DOI

10.2478/s11532-006-0011-7