用X射线光电子能谱(XPS)研究巯基棉对于水溶液中CH_3Hg~+和Hg~(2+),Se~(4+)和Se~(6+) 及Cr~(3+)和Cr~(6+)的吸附作用

• 作 者: 王当憨 刘世宏 赵良仲
• 机 构: 中国科学院化学研究所,中国科学院化学研究所,中国科学院化学研究所,
• 出 处: 分析化学
• 发表日期: 1984年04期
• 关键词: 吸附作用 巯基 光电子能谱 吸附剂 原富 还原作用 富集水 水溶液 饱和吸附 金属离子

巯基棉作为一种富集水溶液中重金属离子的吸附剂,已有文献记载。但将其作为一种吸附还原富集剂,报导还甚少。本文用XPS测定了已饱和吸附CH_3Hg~+和Hg~(2+),Se~(4+)和Se~(6+)及Cr~(8+)和Cr~(6+)的各种巯基棉。结果表明,巯基棉在吸附CH_3Hg~+和Hg~(2+)时仅起了一个吸附剂的作用,但在吸附Se~(4+)和Se~(6+)及Cr~(6+)时,除吸附外还产生了强还原作用,并能将前二者均还原为Se~0,后者还原为Cr~0。

Sulfhydryl cotton as an enrichment of heavy metal ions in aqueous solution adsorbent, has been documented. However, there are few reports about it as an adsorption-reduction enrichment agent. In this paper, the adsorption of various thiol groups saturated with CH_3Hg ~ + and Hg ~ (2 +), Se ~ (4+), Se ~ (6+), Cr ~ (8+) and Cr ~ (6+) cotton. The results showed that the mercapto cotton played only an adsorbent role in the adsorption of CH_3Hg ~ + and Hg ~ (2+). However, adsorption of Se ~ (4+), Se ~ (6+) and Cr ~ (6+) , In addition to the adsorption also produced a strong reduction effect, and can both be reduced to Se ~ 0, the latter reduced to Cr ~ 0.