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本文研究了meso-四(4-甲基-3-磺基苯)卟啉[T(4M-3SP)P]与镍(Ⅱ)的显色反应.在表面活性剂氯化十六烷基吡啶(CPC)与吐温-60,镉盐和咪唑存在下,在pH8.0～9.0的弱碱性介质中,沸水浴加热,镍(Ⅱ)与T(4M-3SP)P形成灵敏度很高的1:1配合物,ε_(418)=2.27×10~5.在0～1.5μg Ni(Ⅱ)/10ml范围内符合比尔定律.应用本法测定了工业废水及合金中低含量镍,获得了满意的结果.
The color reaction of meso-tetrakis (4-methyl-3-sulfophenyl) porphyrin [T (4M-3SP) P] with nickel (Ⅱ) was studied in this paper.After the surfactant cetylpyridinium chloride In the presence of CPC and Tween-60, cadmium salts and imidazole, Ni (Ⅱ) is highly sensitive to T (4M-3SP) P in a weak alkaline medium at pH 8.0-9.0. Beer’s law was obeyed in the range of 0 ~ 1.5μg Ni (Ⅱ) / 10ml. This method was applied to the determination of low content of nickel in industrial wastewater and alloy Satisfying result.