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1引言用卟啉类显色剂测定痕量金属含量灵敏度很高,因而备受重视。但用导数光度法研究非水溶性卟啉显色剂的报道很少。非水溶性meso-四(4-氨基苯基)卟啉[T(4-AP)P]作为锌的显色剂研究尚未见报道。本文用二阶导数光度法建立了该卟琳测定痕量锌的新方法。该?
1 Introduction Determination of trace metal content with porphyrin-based reagent High sensitivity, which received much attention. However, the derivative photometric method for the study of water-insoluble porphyrin chromogenic agents rarely reported. Studies on the chromogenic agent of zinc-free water-soluble meso-tetrakis (4-aminophenyl) porphyrin [T (4-AP) P] have not been reported yet. In this paper, a new method of determination of trace zinc with this porphyrin was established by the second derivative spectrophotometry. The?