测定钢中锰、铬和钒的原用方法很麻烦,要有两份或两份以上的试液,还要有数倍于这些金属的选择性氧化物。一种改进的方法可连续测定同一份溶液中的锰、铬和钒。该方法是用苯并氧肟酸(BHA)直接滴定法快速测定钢中的锰和铬,在同一溶液中再用砷酸(BHA作指示剂)滴定钒。该方法不受钢中存在的普通合金元素的干扰,已分析过一些 BCS 钢样,精度良好。 Determination of manganese, chromium and vanadium in the original method is very troublesome, to have two or more than two test solution, but also several times more than the selective oxidation of these metals. An improved method for the continuous determination of manganese, chromium and vanadium in the same solution. This method uses the direct titration of benzohydroxamic acid (BHA) to determine the content of manganese and chromium in the steel and titrate arsenic (BHA as an indicator) titration of vanadium in the same solution. This method is not disturbed by the common alloying elements present in the steel. Some BCS steels have been analyzed with good accuracy.