在金属离子和有机显色剂的二元体系中,加入长碳链的有机表面活性剂,能有效地提高反应的灵敏度、增大对比度、改善试验条件,为痕量金属分析提供了方便的条件,现已建立了许多有实用价值的分析方法.但应用于镁的分光光度法却报导甚少,我们在工作中发现,镁与漂蓝6B在溴化十六烷基三甲铵的存在下能立即形成绿色 In the binary system of metal ions and organic chromogenic agents, the addition of long chain carbon organic surfactant can effectively improve the sensitivity of the reaction, increase the contrast, improve the test conditions, and provide convenient conditions for the analysis of trace metals , Many practical analytical methods have been established, but little is known about the spectrophotometric method applied to magnesium. We found at work that magnesium and bleached blue 6B can be present in the presence of cetyltrimethylammonium bromide Immediately form a green