Spectroscopy and Spectral Analysis, Volume. 29, Issue 2, 522(2009)

Flame Atomic Absorption Spectrometry Determination of Cadmium in Environmental Water with Preconcentration and Separation by Sodium Trititanate Whisker

XU Wan-zhen*, YU Shen-luan, LIU Ai-qin, and YAN Yong-sheng
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    Sodium tertitanate whisker is a new material for preconcentration.The adsorption properties of sodium trititanate whisker for Cd(Ⅱ) were studied and a new method for preconcentration and separation of Cd(Ⅱ) was proposed.The adsorption rate of Cd(Ⅱ) by sodium trititanate whisker was 98% at pH 5.0 and Cd(Ⅱ) could be eluted from sodium trititanate whisker with hydrochloric acid (C:0.1 mol·L-1).The Cd(Ⅱ) in environmental water was preconcentrated with sodium trititanate whisker and determined by flame atomic absorption spectrometry (FAAS).The detection limit (3σ,n=9) was 3.1 ng·L-1,and the relative standard deviation (RSD) was 2.6%.The response of proposed method is linear in the concentration range of 0.01-1.0 μg·mL-1 of Cd(Ⅱ).The method was applied to the determination of analytes in real samples,such as Changjiang River water,Canal water,Yudai River water etc.Good results were obtained (relative standard deviations were 1.5%-4.7%,while recoveries were 98%-102.0%).

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    XU Wan-zhen, YU Shen-luan, LIU Ai-qin, YAN Yong-sheng. Flame Atomic Absorption Spectrometry Determination of Cadmium in Environmental Water with Preconcentration and Separation by Sodium Trititanate Whisker[J]. Spectroscopy and Spectral Analysis, 2009, 29(2): 522

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    Paper Information

    Received: Oct. 12, 2007

    Accepted: --

    Published Online: Dec. 9, 2009

    The Author Email: Wan-zhen XU (xuwanzhen1212@163.com)

    DOI:10.3964/j.issn.1000-0593(2009)02-0522-04

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