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现有的锰铁分析方法,准确度是很高的,但由于操作时间较长,以及设备的限制,对炉前分析工作者是不很适用的。我室为了工作上需要,进行了几种快速分析方法。快速法有时须降低一些所得结果的准确度,但在检验过程中,我们试用过氯酸法认为较为适用。经几次的分析和其它方法校对(过氯酸钾法,过硫酸盐—银盐法,鉍酸钠标准法,氯酸钾法等),所得结果尚称满意,而在节省时间,减少材料,以及减少仪器设备上较为有利,操作也较简单。本法试料用HClO_4及HNO_3的混酸来分解,加H_3PO_4蒸发,然后加H_2SO_4再蒸发,锰被氧化(Mn~(+++),然后用N/10硫酸亚铁铵标准溶液加入过量还原,再用N/10高锰酸钾标准溶液滴
Existing methods of ferromanganese analysis, the accuracy is very high, but because of the long operating time, as well as equipment limitations, for the furnace front analyst is not very applicable. My room for work needs, conducted several rapid analysis methods. The fast method sometimes has to reduce the accuracy of some of the results obtained, but in the testing process, we try the perchloric acid method is more applicable. After several analyzes and other methods of proofreading (potassium perchlorate, persulfate - silver, sodium bismuthate, potassium chlorate, etc.), the results are still satisfactory, and save time, reduce the material, and reduce the instrument Equipment is more favorable, the operation is relatively simple. The sample is decomposed by the mixed acid of HClO_4 and HNO_3, H_3PO_4 is evaporated and then H_2SO_4 is re-evaporated, the manganese is oxidized (Mn ~ (+++)), then the excess is reduced by adding N / 10 ferrous ammonium sulfate standard solution, Then use N / 10 potassium permanganate standard solution drops