Quimica nova | |
Preconcentration of Cr(III) and speciation analysis of chromium employing montmorillonite saturated with potassium ions | |
Fernandes, Tatyane Caruso1  Frois, Sérgio Ribeiro1  Barreto, Ronaldo Adriano dos Santos1  Abate, Gilberto1  Grassi, Marco Tadeu1  | |
[1] Universidade Federal do Paraná, Curitiba, Brasil | |
关键词: clay minerals; sorption; speciation analysis.; | |
DOI : 10.1590/S0100-40422011000300018 | |
学科分类:化学(综合) | |
来源: Sociedade Brasileira de Quimica | |
【 摘 要 】
The clay mineralmontmorillonite-K10 (MT), treated under acidic medium and saturated with potassiumions (MTK), was employed in sorption and desorption studies aiming the preconcentrationof Cr(III) and the speciation analysis of chromium. The sorption process ofCr(III) was close to 100%, suggesting that MTK was a good material for Cr(III)preconcentration, although, the maximum recovery in HNO3 solutionwas near 89%. On the other hand, Cr(VI) practically was not retained in MTK,suggesting this material as an appropriate mineral phase to be used in speciationanalysis of chromium in aqueous medium.
【 授权许可】
CC BY
【 预 览 】
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RO201902011080751ZK.pdf | 259KB | download |