Preparation of Manual-controlled Injection Nano-barium-strontium Titanate Based on Glass Fiber Filter Enricher and Its Application in Speciation Analysis of Chromium in Environmental Waters
A manual-controlled injection barium—strontium titanate based on glass fiber filter enricher(MIBSTE) was prepared,and its application in speciation of Cr(III) and Cr(VI)from water was studied．The optimum experimental parameters for preconcentration and separation of the Cr(III) and Cr(VI) have been investigated．The results showed that the BBST had adsorption capacity towards the Cr(III)and Cr(VI) at the different conditions．And two forms of chromium show different adsorption capacities at different pH values,Cr (III) could be adsorbed at pH≥10,but Cr(VI)can’t be adsorbed． Whereas Cr(VI)retained at pH≤ 2，but Cr(IlI)can’t be adsorbed．Therefore．jt iS possible that the two forms of chromium are complete separated．The Cr(III) and Cr (VI) could be completely eluted with 1 mol·L-1 HCI and 1 tool·L-1 NaOH．respectively．The chromium concentration was measured by atomic absorption spectroscopy．A new method for determination of the speciation 0f chromium in environmental water samples based on the manualcontrolled injection enricher and atomic absorption spectroscopy determination was proposed．The method was successfully applied for the determination of Cr(III)and Cr(VI) in environmental waters with satisfactory．results．
Nano-barium-strontium Titanate Manual controlled injection enricher Speciation Chromium Flame atomic absorption spectrometry
Dong Zhang
School of Environmental and Chemical Engineering Shenyang Li-gong University Shenyang 110159 PR China
国际会议
海口
英文
122-124
2011-02-22（万方平台首次上网日期，不代表论文的发表时间）