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光传感和选择性Pb (II) 提取通过丹西胺离子交换器

Konstantinos Kavallieratos¹, Jay M Rosenberg, Wei-Zhong Chen

¹Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th Street, Miami, FL 33199, USA.

Journal of the American Chemical Society

|May 5, 2005

概括

一种新型的硫胺选择性地利用离子交换机制从水中提取离子 (Pb (II)). 这一过程导致可测量的光火,证实了选择性检测.

科学领域:

分析化学分析化学
环境科学环境科学
材料科学材料科学材料科学

背景情况:

选择性金属离子提取对于环境监测和整治至关重要.
光传感器为重金属提供了敏感的检测方法.
基于硫胺的配体正在探索金属离子复合.

研究的目的:

开发一种从水溶液中选择性提取离子 (Pb (II)) 的方法.
调查使用 (二) 化硫胺作为选择性Pb (II) 提取剂.
为了将光火与Pb(II) 提取和复合形成相关联.

主要方法:

选择性液体液体提取金属离子使用 (二) 化硫胺 1.
使用感应合等离子质谱法 (ICP-MS) 量化金属离子分布比.
在金属离子提取后监测硫胺的光火.

主要成果:

(二) 丹化硫胺1对Pb(II) 提取具有较高的选择性,超过其他双价金属离子 (Co(II),Ni(II),Cu(II),Zn(II),Cd(II)).
的分布比率是其他金属的133-1410倍.
选择性Pb(II) 提取导致度依赖的光火,由非光单化对照证实.

结论:

(二) 甘化硫胺1是通过离子交换机制有效和有选择地提取Pb (II) 的提取剂.
光火是Pb (II) 协调和提取的直接指标.
选择性归因于有机阶段形成一个稳定的,低坐标的二元Pb(II) -硫胺化合物复合体.

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