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2006 | 4 | 2 | 258-265
Tytuł artykułu

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

Treść / Zawartość
Warianty tytułu
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.
Wydawca

Czasopismo
Rocznik
Tom
4
Numer
2
Strony
258-265
Opis fizyczny
Daty
wydano
2006-06-01
online
2006-06-01
Twórcy
  • Department of General and Inorganic Chemistry, Plovdiv University, 4000, Plovdiv, Bulgaria
  • Department of General and Inorganic Chemistry, Plovdiv University, 4000, Plovdiv, Bulgaria, kgavazov@abv.bg
  • Department of General and Inorganic Chemistry, Plovdiv University, 4000, Plovdiv, Bulgaria
Bibliografia
  • [1] K. Pyrzynska: “Recent Developments in Spectrophotometric Methods for Determination of Vanadium”, Mikrochim. Acta, Vol. 149, (2005), pp. 159–164.
  • [2] M.J.C. Taylor and J.F. van Staden: “Spectrophotometric Determination of Vanadium(IV) and Vanadium(V) in Each Other’s Presence”, Analyst, Vol. 119, (1994), pp. 1263–1276. http://dx.doi.org/10.1039/an9941901263[Crossref]
  • [3] J. Valero: “Determination Fotometrica de Vanadio Mediante Sistemas Ternarios”, Bol. Soc. Quim. Peru, Vol. 57, (1991), pp. 23–41.
  • [4] L.M. Dimova and E.A. Morgen: “Extraction-photometric determination of vanadium with 4-(2-pyridylazo)resorcinol in the presence of tetrazolium chloride”, Zavod. Lab., Vol. 50, (1984), pp. 7–9.
  • [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.
  • [6] K. Gavazov, Zh. Simeonova and A. Alexandrov: “Extraction spectrophotometric determination of vanadium in natural waters and aluminium alloys using pyridyl azo resorcinol (PAR) and iodo-nitro-tetrazolium chloride (INT)”, Talanta, Vol. 52, (2000), pp. 539–544. http://dx.doi.org/10.1016/S0039-9140(00)00405-7[Crossref]
  • [7] K. Gavazov and G. Patronov: “Extraction-spectrophotometric determination of vanadium in catalysts with azoderivatives of resorcinol and tetrazolium salts”, Scientific Researches of the Union of Scientists - Plovdiv, Series C. Technics and Technologies; Balkan Conference of Young Scientists, 16–18 June 2005, Plovdiv, Vol. 5, (2005), pp. 290–295.
  • [8] M.D. Morton, J.A. Heppert, S.D. Dietz, W.H. Huang, D.A. Ellis, T.A. Grant, N.W. Eilerts, D.L. Barnes, F. Takusagawa and D. VanderVelde: “Ring Size Effects in Phenol-Phenolate Tungsten(VI) Chelates”, J. Am. Chem. Soc., Vol. 115, (1993), pp. 7916–7917. http://dx.doi.org/10.1021/ja00070a063[Crossref]
  • [9] P.K. Tarafder and A.K. Sardana: “A rapid method for the spectrophotometric determination of iron in silicate rocks”, Chem. Anal. (Warsaw), Vol. 45, (2000), pp. 145–166.
  • [10] S. Kostova, A. Alexandrov and A. Dimitrov: “Ion-association complexes of titanium(IV) with polyphenols and tetrazolium salt. Extraction-spectrophotometric determination of titanium in steels and aluminium alloys”, Anal. Lab., Vol. 7, (1998), pp. 13–19.
  • [11] V. Lekova, A. Dimitrov and M. Slavova: “Investigation of the extraction equilibrium of ion-association complexes of Mo(VI) with some polyphenols and iodonitrotetrazolium chloride (INT), J. Univ. Chem. Tech. Met., Vol. 38, (2003), pp. 901–908.
  • [12] A. Dimitrov, V. Lekova, K. Gavazov and B. Boyanov: “Investigation of the extraction equilibrium of ion-association complexes of molybdenum(VI) with some polyphenols and thizaolyl blue. Extraction-spectrophotometric determination of molybdenum”, Cent. Eur. J. Chem., Vol. 3, (2005), pp. 747–755. [Crossref]
  • [13] A. Yerramilli, R.R. Manda, K. Patti, C.S. Kavipurapu and B. V. Rao: “Selective and sensitive extraction spectrophotometric method for the determination of vanadium(V) as a mixed ligand complex with N-phenyl benzohydroxamic acid and 4-(2-pyridylazo)resorcinol in non-aqueous media”, Mikrochim. Acta, Vol. I, (1990), pp. 87–94.
  • [14] M.I. Bulatov and I.P. Kalinkin: Practical Handbook of Photometric Methods of Analysis, Khimiya, Leningrad, 1986.
  • [15] A. Alexandrov, O. Budevsky and A. Dimitrov: “Investigation of the extraction equilibrium of ternary ion-association complex of thallium(III) with iodo-nitrotetrazolium chloride” J. Radioanal. Chem., Vol. 29, (1976), pp. 243–250.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
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