ADSORPTION BEHAVIOR OF Pb(II) ON POTASSIUM HEXATITANATE WHISKER BY FAAS  

作　　者：CHENG Yonghua XU Wanzhen YAN Yongsneng JING Junjie 

机构地区：[1]College of Chemistry, Pingdingshan University, Pingdingshan 467000, China [2]School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China

出　　处：《Chinese Journal of Reactive Polymers》2008年第1期48-54,共7页中国反应性高分子（英文版）

基　　金：Science and Technical Department Innovation Fund and Graduate Student Innovation Project of Jiangsu Province.

摘　　要：Based on the advantage of high surface area and strong adsorption ability of potassium hexatitanate whisker, a method to determine trace Pb(II) content by combining solid phase extraction with Flame atomic absorption spectrometry (FAAS) was established. The adsorptive behavior of potassium hexatitanate whisker to Pb(II), primary influencing factors of adsorption and elution and effect of coexistence ions were investigated systemically. The optimal analytical conditions were discussed and examined. It was found that the adsorption rate of potassium hexatitanate whisker to Pb(II) was 100% at pH 4.0. Pb(II) could be eluted from potassium tetratitanate whisker with HCl (2mol/L) under boiling water for 30min. The detection limit was 5.75ng/mL, and relative standard deviation was 1.66% (n=9, CPb=2.0μg/mL).Based on the advantage of high surface area and strong adsorption ability of potassium hexatitanate whisker, a method to determine trace Pb（II） content by combining solid phase extraction with Flame atomic absorption spectrometry （FAAS） was established. The adsorptive behavior of potassium hexatitanate whisker to Pb（II）, primary influencing factors of adsorption and elution and effect of coexistence ions were investigated systemically. The optimal analytical conditions were discussed and examined. It was found that the adsorption rate of potassium hexatitanate whisker to Pb（II） was 100% at pH 4.0. Pb（II） could be eluted from potassium tetratitanate whisker with HCl （2mol/L） under boiling water for 30min. The detection limit was 5.75ng/mL, and relative standard deviation was 1.66% （n=9, Cpb=2.0μg/mL）.

关 键 词：Adsorption behavior Pb（II） Potassium hexatitanate whisker FAAS. 

分 类 号：TQ243.1[化学工程—有机化工]