Separation and Determination of Trace Amounts of Thallium by Nano-TiO2 Combined with Microwave Irradiation |
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Authors: | ZHANG Lei HUANG Ting GUO Xing-jia and LIU Xue-yan |
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Institution: | College of Chemistry, Liaoning University, Shenyang 110036, P. R. China |
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Abstract: | Nano-TiO2 was employed for the separation and preconcentration of thallium. It was found that the adsorption ratio of thallium ions was more than 98% at pH 4.5 and the desorption ratio reached 99% under microwave irradiation for 3 min at 350 W. The adsorption equilibrium was well described by the Langmuir isotherm model with a maximum adsorption capacity of 4.09 mg/g(20±0.1) °C]. The nano-TiO2 was successfully applied to the determination of element thallium in the certified reference material polymetallic nodule and water samples. |
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Keywords: | Tl(III) Preconcentration Nano-TiO2 Microwave irradiation desorption |
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