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在强碱性介质中,镉离子能与镉试剂1B及邻氮杂菲形成橙红色的三元络合物,该络合物为氯仿所萃取,最大吸收波长为498nm,摩尔吸光系数为7.0×10~41mol~(-1)cm~(-1),本方法适用于工业废水及被污染水体中镉的测定。
In strong alkaline medium, cadmium ions can form orange-red ternary complexes with cadmium reagent 1B and orthophenanthroline. The complex is extracted by chloroform with a maximum absorption wavelength of 498 nm and a molar absorptivity of 7.0 × 10 ~ 41mol ~ (-1) cm ~ (-1). The method is suitable for the determination of cadmium in industrial wastewater and polluted water.