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矿石中高含量铁一般均采用容量法进行测定,虽然近年来铁的容量法进行了改进,均采用无汞测铁的方法,改去汞对环境的污染,但滴定的标准溶液还是用重铬酸钾溶液,而铬也将对环境带来一定的污染。为此考虑到铁在氢氧化钠—三乙醇胺,或盐酸溶液中均能得到很好还原波的性能,利用金电极在硫磷混酸—盐酸溶液中对三价铁
Although the iron content in iron ore is generally determined by the volumetric method, although the iron capacity method has been improved in recent years, the mercury-free method is used to change the mercury pollution to the environment. However, the titration standard solution is also treated with dichromic acid Potassium solution, while chromium will also bring some pollution to the environment. For this reason, taking into account the iron in sodium hydroxide - triethanolamine, or hydrochloric acid solution can be very good reduction of the wave performance, the use of gold electrode in phosphoric acid mixed acid - hydrochloric acid solution of ferric