利用锰的氧化还原性质进行锰的测定甚为方便,尤其是先将锰氧化至七价状态,然后用不同还原剂作锰的测定,这一分析方法经很多人的研究改进已臻完善,并被广泛的应用。但在铬、钴含量高时,利用这个方法是有一定困难的,特别是在矿物中作锰的测定时常因对复杂程度估计不足而造成误差。一些学者为克服这个困难曾研究了很多的方法,现在比较广泛和受注意的方法是在络合剂存在下,采用适宜的氧化剂将锰氧化至三价状态,然后用还原剂来滴定。作为络合剂的有偏磷酸盐、焦磷酸盐、磷酸和氟化物等。均能与三价锰生成络合物使三价锰得以稳定。作为氧化剂的有 The use of redox properties of manganese for the determination of manganese is very convenient, especially the first oxidation of manganese to the seven state, and then use different reductants for the determination of manganese, this analysis has been improved by many people’s research and has been improved, and Is widely used. However, when chromium and cobalt are high, it is somewhat difficult to utilize this method. In particular, the determination of manganese in a mineral often causes errors due to insufficient estimation of the degree of complexity. Some scholars have studied a lot of ways to overcome this difficulty. Now, a more widespread and notable method is to oxidize manganese to a trivalent state with a suitable oxidant in the presence of a complexing agent, and then titrate with a reducing agent. As a complexing agent metaphosphate, pyrophosphate, phosphoric acid and fluoride. Can form complexes with trivalent manganese to stabilize the trivalent manganese. There are as oxidants