ICP-AES法研究六钛酸钾晶须对Cu(Ⅱ)，Pb(Ⅱ)，Cd(Ⅱ)的吸附性能

doi:10.3964/j.issn.1000-0593(2009)03-0801-04

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Abstract A new method for the determination of free Cu2+, Pb²⁺ and Cd²⁺ in environmental sample using potassium hexatitanate whisker as a solid-phase extractant and inductively coupled plasma-atomic emission spectrometry (ICP-AES) as a sensitive detector has been developed. The adsorption rate of Cu²⁺,Pb²⁺ and Cd²⁺ by potassium hexatitanate whisker was 98% at pH 5.0, and Cu²⁺,Pb²⁺ and Cd²⁺ could be eluted from potassium hexatitanate whisker with HNO₃ (C: 3 mol·L^-1). The Cu²⁺,Pb²⁺ and Cd²⁺ in environmental samples were preconcentrated with potassium hexatitanate whisker and determined by ICP-AES, the detection limits of Cu²⁺,Pb²⁺ and Cd²⁺ (3σ, n=9) were 0.007 1，0.006 8 and 0.007 1 μg·mL^-1,and the relative standard deviations (RSD) were 0.63%, 0.61% and 0.50%, respectively. The method was applied to the determination of analytes in real samples, such as chrysanthemum and loquat leaf. And good results were obtained (recoveries were 90%-102.9%). The results obtained indicate that the potassium hexatitanate whisker has good regenerate capability.

Key words：ICP-AES;Cu²⁺;Pb²⁺;Cd²⁺;Adsorption behavior;Potassium hexatitanate whisker

Received: 2007-08-10 Accepted: 2007-11-20

ZTFLH:

O657.3

Corresponding Authors: YAN Yong-sheng E-mail: xuwanzhen1212@163.com

Cite this article:

XU Wan-zhen,LI Chun-xiang,LIU Ai-qin, et al. ICP-AES Determination of Cu²⁺,Pb²⁺ and Cd²⁺ with Adsorption Behavior of Potassium Hexatitanate Whisker[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(03): 801-804.

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http://www.gpxygpfx.com/EN/10.3964/j.issn.1000-0593(2009)03-0801-04 OR http://www.gpxygpfx.com/EN/Y2009/V29/I03/801

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