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锰、铬、钒三种元素共存时,通常多采用分别测定的方法,但这些元素互相干扰,需预先分离或采用消除干扰的方法。亦有人采用锰、铬连测或钒、铬连测的方法。为了使方法更为快速、准确以满足生产上的要求,我们试验了锰、铬、钒的连续测定法,本法是在硫磷酸介质中,以高硫酸铵、高锰酸钾等为氧化剂,以亚铁溶液为滴定剂,经过三次滴定,分别求得此三种元素的含量。由条件试验表明:硫酸浓度为3-5％,磷酸浓度为2—5％,对测定均无影响;锰、铬、钒每一元素含量从1-10毫克变化并按任一比例组合时,均可得到良好结果;本法应用于钛铁矿、
Manganese, chromium, vanadium three elements coexist, usually using more separate determination of the method, but these elements interfere with each other, the need to pre-separation or the use of methods to eliminate interference. Some people use manganese, chromium even test or vanadium, chromium even test method. In order to make the method more rapid and accurate to meet the production requirements, we test the continuous determination of manganese, chromium, vanadium, this law is in sulfuric acid medium, ammonium sulfate, potassium permanganate as oxidant, Ferrous solution as titrant, after three titration, respectively, to obtain the content of these three elements. According to the condition test, the concentration of sulfuric acid is 3-5% and the concentration of phosphoric acid is 2-5%, which has no effect on the determination. When the content of each element of manganese, chromium and vanadium varies from 1 to 10 mg and is in any proportion, Can get good results; This method is applied to ilmenite,