Bacillus sp immobilized on Amberlite XAD-4 resin as a biosorbent for solid phase extraction of thorium prior to UV-vis spectrometry determination

被引：40

作者：

Ozdemir, Sadin ^{[1
]}

Erdogan, Sait ^{[2
]}

Kilinc, Ersin ^{[2
]}

机构：

[1] Univ Siirt, Dept Biol, Fac Art & Sci, TR-56100 Siirt, Turkey

[2] Dicle Univ, Chem Anal Lab, Dept Chem, Fac Sci, TR-21280 Diyarbakir, Turkey

来源：

MICROCHIMICA ACTA | 2010年 / 171卷 / 3-4期

关键词：

UV-vis spectrophotometry; Thorium determination; Preconcentration; Bacillus sp; Solid phase extraction; SPECTROPHOTOMETRIC DETERMINATION; HEAVY-METALS; SACCHAROMYCES-CEREVISIAE; DISODIUM SALT; BIOSORPTION; URANIUM; PRECONCENTRATION; SEPARATION; REMOVAL; BIOACCUMULATION;

D O I：

10.1007/s00604-010-0423-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method has been developed for the preconcentration of Th prior to its determination by UV-vis spectrophotometry after complexation with Arsenazo Ill. A column was packed with Amber lite XAD-4 resin containing immobilized Bacillus sp. as a solid phase extractant. Parameters such as pH of the solution and sample, the concentration of Th, the volume and type of eluent, flow rate and effect of matrix interference were studied. The optimum pH for the sorption of Th is 5.0, and quantitative eluation occurs with 1 mol L-1 HCl. The tolerance limits of some electrolytes were also studied. The loading capacity was determined to be 17.2 mg g(-1) The method was applied to the determination of Th in real ore sample and validated by analyzing a certified reference samples (NCS DC-73350; poplar leaves).

引用

页码：275 / 281

页数：7

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