Spectrophotometric determination of soluble complexes with 1-(2-pyridylazo)-2-naphthol in water at different pH

doi:10.26565/2220-637X-2012-21-21

Anatoliy V. Drozd V.N. Karazin Kharkiv National University
Nataliia A. Leonova V.N. Karazin Kharkiv National University https://orcid.org/0000-0001-7904-8311

DOI: https://doi.org/10.26565/2220-637X-2012-21-21

Keywords: the solubility product, solubility, complex, 1-(2-pyridylazo)-2-naphthol

Abstract

The formation of neutral chelates of Fe (II), Co (III), Ni (II), Cu (II) with 1-(2-pyridylazo)-2-naphthol in water at pH=1.5÷6 by the extraction-spectrophotometric method was investigated. The solubility constants of complexes Fe(PAN)₂ and Ni(PAN)₂, CuPANCl, Co(PAN)₂Cl as well as the formation constants of the complex ions CuPAN⁺ and Co(PAN)₂⁺ were calculated using the program Clinp.

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References

A. V. Vinogradov, S. V. Elinson. 8-oksihinolin - M. : Nauka, 1979. - 329 s.

By'r'ko V. M. Ditiokarbamaty'. - M. : Nauka, 1984. - 342 s.

Kari Y. Effects of iron (III) chelates on the solubility of heavy metals in calcareous soils. En-vironmental Pollution. - 2010. - N 158. - P. 3194-3200.

L. Hauser, S. Tandy, R. Schulin, B. Nowack. Column extraction of heavy metals from soils using the biodegradable chelating agent EDDS. Environmental Science and Technology. - 2005. - N 39. - P. 6819-6824.

S. Tandy, K. Bossart, R. Mueller [et. al]. Extraction of heavy metals from soils using biode-gradable chelating agents. Environmental Science and Technology. - 2004. - N 38. - P. 937-944.

S. Tandy, A. Ammann, R. Schulin, B. Nowack. Biodegradation and speciation of residual SS-ethylenediaminedisuccinic acid (EDDS) in soil solution left after soil washing. Environmental Pollution. - 2006. - N 142. - P. 191-199.

Analiz metallov: spravochnik / A. I. Lazarev, I. P. Harlamov. - M. : Metallurgiya, 1987. - 320 s.

Bugae''vs'kiy O. A., Drozd A. V., Naumenko V. A., Yurchenko O. I. Laboratorniy praktikum z anali'tichnoi` hi'mi'i` / pi'd red. O. A. Bugae''vs'kogo i' A. V. Drozda. - H. : HDU, 1999. - 140 s.

Kolichestvenny'y fiziko-himicheskiy analiz kompleksoobrazovaniya v rastvorah i na poverh-nosti himicheski modificirovanny'h kremnezemov: soderjatel'ny'e modeli, matematicheskie metody' i ih prilojeniya / [Yu. V. Holin]. - H. : Folio, 2000. - 288 s.