甲基橙指示SnCl_2还原无汞测铁法的改进

Method of no mercury salt determination iron by methyl orange indicating reduction of stannous chloride

对用甲基橙指示预氧化还原无汞测铁法的实验条件进行了探讨,改进了无汞测铁法的一些具体操作步骤,使无汞测铁法的实验现象更加明显,测定精度更高,并与经典的SnCl2_HgCl2预还原测铁法进行比较,结果令人满意。

In this paper,it were investgated on some experimental factors that determination of iron no mercury using methyl orange as indicator carry on the preoxidation-reduction reaction, some conditions of this method has been improved ,which makes the experimental phenomenon more obvious, The precision is much better. The analytical results obtained are in good agreement with those obtained by classical method.