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Thermochemical study of the complex formation of mercury(II) with nitrilotriacetic acid in an aqueous solution

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Abstract

The formation constant of the Hg(Nta) 4−2 complex, where Nta3− is the nitrilotriacetate ion, is determined by pH-metric titration at 298.15 K and ionic strength I = 0.5 (KNO3) (logβ = 21.49 ± 0.10). The thermal effects for the formation of the Hg(NTa) i2−3i complexes (i = 1, 2) are determined by a direct calorimetric method (−56.69 ± 1.04 and −85.88 ± 1.32 kJ/mol for i = 1 and 2, respectively).

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Authors and Affiliations

  1. Ivanovo State University, Ivanovo, Russia

    D. F. Pyreu & E. V. Kozlovskii

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  1. D. F. Pyreu
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  2. E. V. Kozlovskii
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Correspondence to D. F. Pyreu.

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Original Russian Text © D.F. Pyreu, E.V. Kozlovskii, 2009, published in Koordinatsionnaya Khimiya, 2009, Vol. 35, No. 1, pp. 47–51.

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Pyreu, D.F., Kozlovskii, E.V. Thermochemical study of the complex formation of mercury(II) with nitrilotriacetic acid in an aqueous solution. Russ J Coord Chem 35, 47–51 (2009). https://doi.org/10.1134/S1070328409010102

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  • DOI: https://doi.org/10.1134/S1070328409010102

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