Solid phase extraction using silica gel modified with azo-dyes derivative for preconcentration and separation of Th(IV) ions from aqueous solutions

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 308; no. 1; pp. 81 - 91
• Main Authors: Kırkan, Bulent, Aycik, Gul Asiye
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01-04-2016; Springer
• Subjects: Chemistry; Chemistry and Materials Science; Diagnostic Radiology; Fertilizers; Hadrons; Heavy Ions; Inorganic Chemistry; Nuclear Chemistry; Nuclear Physics; Physical Chemistry; Silica; Solid phase extraction; Silica gel; Adsorption; Thorium(IV); Azo-dyes derivative
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-015-4382-0

Azo-dyes derivative (HL) sorbent was synthesized according to the literature to be used in the adsorption and preconcentration of Th(IV) ions from aqueous solution and it was exposed to immobilization, and new solid support material was obtained. For this purpose, azo-dyes derivative (HL) was chemically bonded to silica gel surface immobilized 3-chloropropyl trimethoxysilane, then analyzed by FTIR, BET, SEM and elemental analysis. The influence of the solution pH, initial Th(IV) concentration, amount of sorbent, contact time, temperature and foreign ion effect was investigated. The maximum Th(IV) uptake capacity was found to be 24.85 ± 0.2 mg/g.