Separation/enrichment of Trace Nickel(II) by Potassium Bromide—8-Hydroxyquinoline—Phenolphthalein System

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Zhong, Yujun^1 ; Tu, Changqing^2 ; Wen, Xinrong^2

College of Medicine, Jiaying University, Meizhou

514015, China^1

College of Chemistry and Environment, Jiaying University, Meizhou

514015, China^2

关键词: 8-Hydroxyquinoline;    Optimum conditions;    Potassium bromide;    Synthetic waters;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/3/012049/pdf
DOI  :  10.1088/1755-1315/186/3/012049

来源: IOP

【 摘 要 】

A novel method for the separation/enrichment of trace Ni2+ by potassium bromide - 8-hydroxyquinoline - phenolphthalein system was studied. The effects of different parameters on the enrichment yield of Ni2+ have been investigated. The possible enrichment mechanism of Ni2+ was discussed. The results showed that under the optimum conditions, the chelate precipitate of Ni(HQ)2 which produced by Ni2+ and HQ was quantificationally absorbed on the surface of microcrystalline phenolphthalein, while Zn2+, Cd2+, Co2+, Mn2+ and Bi3+ could not be adsorbed. A new method for the separation/enrichment of trace Ni2+ was established. The proposed method has been successfully applied to the separation/enrichment of Ni2+ in the samles of synthetic water, and the enrichment yield was 95.2%∼99.2%.