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表面活性剂在分析化学中应用越来越广泛,其中以其对络合显色反应的增敏效应最引人注目。有关表面活性剂增敏机理的研究已有报道。如西田宏的胶束萃取理论,小原人司的电场集合体模型理论以及胶束催化理论等,多着眼于表面活性剂单方面的作用,并倾向于把增敏原因归结为高配位络合物的形成。实际上有的增敏体系并未形成高配位络合物,如镓
Surfactants are more and more widely used in analytical chemistry. Among them, sensitizing effect on complexation and color reaction is the most noticeable. Studies on the mechanism of surfactant sensitization have been reported. For example, the micellar extraction theory of Nishida Hiroshi, the theory of electric field assembly model of Kohara Hyosung and the micellar catalysis theory focus more on the unilateral action of surfactants and tend to attribute the sensitization to high coordination complex The formation of things. In fact, some sensitizing systems do not form high coordination complexes such as gallium