Author(s)

Nelli Shalikovna Kajsheva, Alexander Shalikovich Kajshev, Borisovna Anna Samoryadova, Kristina Vladimirovna Smolenskaya, Galina Vladimirovna Smolenskaya

Pyatigorsk Medical and Pharmaceutical Institute—A Branch of Federal State-Funded Educational Institution of Higher Vocational Education VolgSMU of Health Ministry of the Russian Federation, Pyatigorsk, Russia.

By derivatography in insoluble pectins Cu²⁺ (РCu²⁺) and Pb²⁺ (РPb²⁺), the presence of “a high-temperature component” (150°C- 165°C) is established. During potentiometric alkalimetric titration of РCu²⁺ and РPb²⁺, endpoints are established at рН accordingly 4.87 and 4.95, proving acid properties of PM. Obtained data show the presence of water in the internal sphere of PM. Considering the loss of this water and the known ratio of metal cations and monomers of pectin (L^-), the simplest formulas of pectins are established: [Cu(L^-)₂(H₂O)₂], [Pb(L^-)₂(H₂O)₄].

Coordination Connections, Pectinates of Metals, Ions of Copper (II), Ions of Lead (II), Composition, Derivatography, Potentiometry

Kajsheva, N. , Kajshev, A. , Samoryadova, B. , Smolenskaya, K. and Smolenskaya, G. (2017) Identification and Quantification of Intracoordination Water in Insoluble Pectinates Cu²⁺ and Pb²⁺. American Journal of Analytical Chemistry, 8, 210-224. doi: 10.4236/ajac.2017.83017.