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三氯化铁法测定金属铁,虽也属公认的常用方法之一,但对其评价问题,至今似仍未见有统一结论.多数人认为,与硫酸铜法一样,与金属铁共存的富氏体有干扰.也有作者指出,三氯化铁法对金属铁的浸取率偏低,所以他们仍推荐硫酸铜法.至于硫酸铜法存在的问题,前文已有结论,兹不赘述.本文在发现磁效应对提高金属铁的浸取率有特殊效果的前提下,研究了三氯化铁法的优越性,从而给该方法以新的评价.指出,由于富氏体、磁铁矿和赤铁
Ferric chloride method for the determination of metallic iron, although it is also recognized as one of the commonly used methods, but evaluation of its problems, so far seems to have no unanimous conclusion most people think, as with the copper sulfate method, the coexistence with the metal iron There is interference of the body.Also the author pointed out that the law of ferric chloride leaching rate of metal iron is low, so they still recommend the copper sulfate method .As for the copper sulfate method, the previous conclusion has been concluded, not repeat them. On the premise of finding that the magnetic effect has a special effect on increasing the leaching rate of metallic iron, the superiority of the ferric trichloride method is studied, and a new evaluation is given to the method. Hematite