铁—磺基水杨酸—二甲氧基羟基苯基荧光酮—TritonX—100体系的光度研究 …
Study on Multi-component Complex of Fe-Sulphosalicylic Acid-DMH-PF-Triton X-100 by Spectrophotometric Method and Its Analytical Application
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摘要: 研究了在表面活性剂存在下,铁与新显色剂二甲氧基羟基苯基荧光酮(DMHPF)的显色反应。在pH9.0~10.5的氨性介质中,有磺基水杨酸(Sal)存在下,形成Fe3+SalDMHPFTritonX100四元混配配合物,其最大吸收峰在590nm,测定波长选择610nm,表观摩尔吸光系数分别为1.3×105L·mol-1·cm-1和9.4×104L·mol-1·cm-1。配合物组成比nFe3+∶nDMHPF=1∶2,Fe3+的质量浓度为0~600μg/L时符合比尔定律。以直接光度法测定工业硅和石灰Abstract: The color reaction of Fe3 with a new chromogenic agent dimethoxyhydroxyphenylflurone (DMHPF) has been investigated in presence of surfactants. The Fe3 SalDMHPFTritonX100 quaternary complex is formed in the medium of NH3H2O at pH 9.010.5 in presence of su