Analytical chemistry council

Metody i Ob'ekty Khimicheskogo Analiza

(METHODS AND OBJECTS OF CHEMICAL ANALYSIS)

Kiev University

An international journal devoted to all aspects of Analytical chemistry

 

ISSN 1991,0290

Ukr | En | Rus

Volume 3, No. 1, 2008

Y. V. Kholin, S. V. Korneev, I. V. Khristenko, F. Pissetti, Y. Gushikem.

Silica-organic materials with immobilized xylenol orange and calcein: fabrication, physico-chemical properties, and detection of metal ions

New hybrid silicaorganic materials with immobilized dyes xylenol orange and calcein were prepared with the aid of the sol-gel method and by the sorption immobilization of dyes on silica surface. The optimum conditions of synthesis were found, and kinetics and equilibria of sorption of dyes were characterized. Also the stability of materials in respect to leaching of dyes was investigated. The complexing equilibria of immobilized xylenol orange and Cu(II), Zn(II) and Pb(II) ions were described, and the high level of energetic heterogeneity of materials was revealed. Hybrid materials with immobilized xylenol orange were found to be prospective for visual test detection of heavy metal ions in solutions. Hybrid materials with immobilized calcein can be used for detection of Cu(II) in the presence of another transition metal ions. The unreliability intervals and the detection limits were determined for the test procedures. 

Keywords: silica-organic hybrid materials xylenol orange calcein sorption  transition metal ions test detection

Publisher: Analytical Chemistry Scientific Council of Ukraine

(Analytical chemistry department at Taras Shevchenko National University, 64 Vladimirskaya STR., Kiev, 01601 UKRAINE)
analysis@univ.kiev.ua, www.achem.univ.kiev.ua, +380-44-2393345

Papers published in Methods and Objects of Chemical Analysis are considered as publications suitable for PhD thesis

The journal website: www.moca.net.ua