New Approach to Synthesis of Silica with Chemically Bound Guanidine Hydrochloride for Preconcentration of Metal IonsReportar como inadecuado




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Guanidine hydrochloride was chemically bonded to surface of modified silica by means of condensation with grafted amino groups. Ion-exchanging and complexing properties of the obtained adsorbent have been studied with respect to cations of ZnII, CuII, PbII, CdII, CoII and metal-containing oxoanions of WVI, MoVI, CrVI, VV. Optimum conditions for quantitative extraction of the studied ions were determined. The structure and composition of CoII and CuII complexes on the surface of the synthesized adsorbent have been investigated. The possibility of quantitative determination of cobaltII and copperII trace amounts after their preconcentration by the synthesized adsorbent was demonstrated.

KEYWORDS

Silica, Guanidine Hydrochloride, Immobilization, Adsorption, Cations and Oxoanions of Transition Metals

Cite this paper

Dadashev, A. , Tertykh, V. , Yanovska, E. and Yanova, K. 2016 New Approach to Synthesis of Silica with Chemically Bound Guanidine Hydrochloride for Preconcentration of Metal Ions. American Journal of Analytical Chemistry, 7, 411-420. doi: 10.4236-ajac.2016.75038.





Autor: Arsentii D. Dadashev1, Valentyn А. Tertykh1, Elina S. Yanovska2, Karolina V. Yanova3

Fuente: http://www.scirp.org/



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