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在测定铁的容量法中,最快和最简单的是亚汞滴量法。方法是根据当硫氰化物存在,并且高铁离子与有高度反应能力的胶态(黑色)汞作用时,亚汞离子即定量的分解。2Hg_2~(2+)+8SCN~-=2Hg+2Hg(SCN)_4~(2-) 2Fe~(3+)+2Hg=Hg_2~(2+)+2Fe~(2+)2Fe~(3+)+Hg_2~(2+)+8SCN~-=2Fe~(2+)+2Hg(SCN)_4~(2-) 我们进行了用这个方法测定矿石中铁的各种条件的研究,并确定滴定在0.01—0.22N的硫酸溶液中进行较好。继续提高溶液的酸度时,由于汞
In the determination of iron volume method, the fastest and easiest is the mercury drop volume method. The method is based on the quantitative decomposition of the mercuric ion when the thiocyanate is present and the HSFe ion interacts with colloidal (black) mercury with high reactivity. (2 +) + 8SCN ~ - = 2Hg + 2Hg (SCN) _4 ~ (2) 2Fe ~ (3 +) + 2Hg = Hg_2 ~ (2+) +2Fe ~ (2+) 2Fe ~ ) + Hg_2 ~ (2 +) + 8SCN ~ - = 2Fe ~ (2 +) + 2Hg (SCN) _4 ~ (2-) We conducted a study of the various conditions for the determination of iron in ore by this method and determined the titration of 0.01-0.22N sulfuric acid solution is better. Continue to raise the acidity of the solution due to mercury