Sorption of uranium using silica gel with benzoylthiourea derivatives

被引：35

作者：

Ayata, Sevda ^{[1
]}

Aydinci, Sinem ^{[1
]}

Merdivan, Melek ^{[1
]}

Binzet, Gun ^{[2
]}

Kulcu, Nevzat ^{[2
]}

机构：

[1] Dokuz Eylul Univ, Dept Chem, Fac Arts & Sci, TR-35160 Izmir, Turkey

[2] Mersin Univ, Dept Chem, Fac Arts & Sci, TR-33343 Mersin, Turkey

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2010年 / 285卷 / 03期

关键词：

Benzoylthiourea derivative; Solid phase extraction; Uranium; Preconcentration; Silica gel; PHASE EXTRACTIVE PRECONCENTRATION; SOLID-PHASE; SEPARATION; U(VI); IONS; POLYMER; TH(IV); TRACE;

D O I：

10.1007/s10967-010-0646-x

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Benzoylthiourea derivatives (N,N-diphenyl-N'-(3-methylbenzoyl)thiourea and diphenyl-N'-(4-methylbenzoyl)thiourea) were impregnated onto silica gel. The preconcentration of uranium(VI) from aqueous solution was investigated. Extraction conditions were optimized in batch method prior to determination by uv-visible absorption spectrometry using arsenazo(III). The optimum pH for quantitative adsorption was found as 3-7. Quantitative recovery of uranium (VI) was achieved by stripping with 0.1 mol L(-1) HCl. Equilibration time was determined as 30 min for 99% sorption of U(VI). Under optimal conditions, dynamic linear range of for U(VI) was found as 0.25-10 mu g mL(-1). The relative standard deviation as percentage and detection limit were 5.0% (n = 10) for 10 mu g mL(-1) U(VI) solution and 8.7 ng mL(-1), respectively. The method was employed to the preconcentration of U(VI) ions in soil and tap water samples.

引用

页码：525 / 529

页数：5