Thermodynamics of Zinc and Cadmium Complexation
with 2-Oxypropylene-1,3-Diamine-N, N, N ', N '-Tetraacetic Acid

S. N. Gridchin*, L. A. Kochergina**, and D. F. Pyreu*

* Ivanovo State Chemical Engineering University, pr. F. Éngel’sa 7, Ivanovo, 153460 Russia

** Ivanovo State University, ul. Ermaka 39, Ivanovo, 153025 Russia

Received June 05, 2003

Abstract—Calorimetric heats of reaction were determined for the formation of zinc and cadmium oxypropy-
lenediaminetetraacetates at 298.15 K and ionic strengths of 0.1, 0.5, and 1.0 (KNO₃), and the corresponding
standard thermodynamic characteristics were calculated.

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