Sodium trititanate whisker separation/pre-concentration trace cadmium in water samples
The present paper proposes the application ofsodium trititanate whisker as solid sorbent for trace cadmium pre-concentration/separation using a static system coupled with flame atomic adsorption spectrometry (FAAS). The method comprised the pre-concentration of Cd(Ⅱ) ions at a buffered solution (pH 5.0) onto 0.25 g of sorbent previously activated by 3.0 mol/L of HNO3. The elution step was carried out with 10 ml of 2.0 mol/L of HCl. The effect of the experimental parameters, such as sample pH, amount of sodium trititanate whisker and eluent were studied. Also, the effect of foreign ions on the determination of Cd(Ⅱ) was also investigated. Under the optimum conditions, the greatest static adsorption capacity of sodium trititanate whisker for Cd(Ⅱ) was 36.07 mg/g, and lower limit of detections and precision are 0.015 mg/L and 1.31%, respectively.
Yan-li Mao Feng-ming Song Jun-cao Shi Jin-song Zhang Fang Xia Quan-hui Hao Tai-zhi Zhang
Henan University of Urban Construction Pingdingshan ,Henan,467001 Guangsha Construction Engineering Limited Company of Henan Guangsha Group Pingdingshan ,Henan,467001 Land and Resources Bureau Survey Team of Pingdingshan Construction Engineering Supervision Company of Pingdingshan Pingdingshan ,Henan,467001 Henan Fifth Construction and Installation Project Limited Company Pingdingshan ,Henan,467001
国际会议
成都
英文
1-3
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）