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目前测定微量锑的方法,不论比色法或原子吸收法几乎都需用有机溶剂萃取分离后才能测定。因此方法手续冗长,而且影响操作人员的健康。我们在探索次甲基蓝-甲基橙-硫酸铈体系中次甲基蓝的催化历程时,发现次甲基蓝不仅可作硫酸铈氧化甲基橙的催化剂,而且可作硫酸铈氧化微量锑的催化剂,甚至几微克锑也可以定量地反应(若不加次甲基蓝则无法
The current method for the determination of trace amounts of antimony, regardless of colorimetric or atomic absorption almost all need to use organic solvent extraction and separation before the determination. Therefore, the procedure is lengthy and affects the health of the operator. When we explored the catalytic course of methylene blue in methyl blue-methyl orange-cerium sulfate system, we found that methyl blue not only can be used as catalyst of cerium sulfate oxidation of methyl orange, but also can be used as a catalyst for oxidation of trace antimony Of the catalyst, even a few micrograms of antimony can also be quantitative reaction (without methine blue can not