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一、概述金属的二硫代胺基甲酸螯合物(以下简称DTC),随其中含氮基团的组成不同,可以区分为两类: 1.二级胺基团的R是憎水的烷基、芳香基等。这种配体与金属螯合之后,产物不溶于水,易溶于有机溶剂,如三氯甲烷、四氯化碳、二氯甲烷、乙醚、丙酮等。因而适于用萃取方法分离富集。 2.二级胺基团的R是亲水的羟基、羧基等,产物可溶于水、不溶于有机溶剂。上述两类螯合物,多具有一定的颜色,因而适于用分光光度法检测。另外,DTC螯合物一
I. Overview Metal dithiocarbamic acid chelates (hereinafter referred to as DTC), with the nitrogen-containing groups in which the composition is different, can be divided into two categories: 1. Secondary amine group R is hydrophobic alkyl Based, aromatic and so on. After chelation of the ligand with metal, the product is insoluble in water and soluble in organic solvents such as chloroform, carbon tetrachloride, methylene chloride, diethyl ether, acetone and the like. Thus suitable for separation and enrichment by extraction method. 2. Secondary amine group R is a hydrophilic hydroxyl, carboxyl, etc., the product is soluble in water, insoluble in organic solvents. The above two types of chelates, many with a certain color, are therefore suitable for spectrophotometric detection. In addition, DTC chelates one