为同时测定高铬钢中的铬和锰,分别把铬氧化为Cr_2O_7~-,把锰氧化为MnO_4~-然后进行分光光度测定。以往测定需经复杂的计算,本法采用高氯酸溶样并氧化铬,高碘酸盐氧化锰,以双波长法同时测定铬和锰,方法快速准确。可以满足生产试验要求。测定范围Cr2～25％,Mn0.1～2％。 实验部分 For simultaneous determination of chromium and manganese in high-chromium steels, chromium was oxidized to Cr 2 O 7 -, respectively, and manganese was oxidized to MnO 4 - and then spectrophotometric determination was performed. In the past to be complicated by the calculation of the determination of the law using perchloric acid dissolved samples and chromium oxide, manganese oxide periodate, dual-wavelength simultaneous determination of chromium and manganese, the method is fast and accurate. Can meet the production test requirements. Measurement range Cr2 ~ 25%, Mn0.1 ~ 2%. Experimental part