摘要
研究了Hg2 + 在自合成的新型含硫螯合树脂 聚 [对乙烯苄基 (2 羟乙基 )硫醚 ](PSME)上的吸附机理。静态吸附结果表明 :吸附属于液膜扩散控制机理 ;树脂对Hg2 + 的等温吸附过程可以用Freundlich方程描述 ;在吸附过程中存在着明显的氧化还原现象。在较低浓度下 ,Hg2 + 主要被还原成Hg2 + 2 和Hg0 ;而在较高浓度下Hg2 + 则主要被还原成Hg2 + 2 。在两种情况下 ,S 均被氧化成 SO2 键。
The sorption mechanism of a novel chelate resin bearing thio ether, poly[p vinylbenzyl (2 hydroxyethyl) sulfide] (PSME), for Hg 2+ was investigated. The results showed that the sorption was controlled by the liquid film diffusion; the isothermal process could be described by Freundlich equation. A redox phenomenon could be found in the process of sorption, Hg 2+ was mainly reduced into Hg 2+ 2 and Hg 0 in the lower concentration, and mainly reduced into Hg 2+ 2 in the higher concentration. At the same time,S bond in chelate resin was oxidized into SO 2 in the both of above mentioned conditions.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2004年第4期445-450,共6页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金 (No .2 990 60 0 8)
中国博士后科学基金 (No .2 0 0 3 0 3 43 0 )
山东省自然科学基金 (No .Q99B15 )资助项目
