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本文试验了三辛基氧化膦(TOPO)与硫氰酸盐和钛形成稳定的三元络合物光度测定钛的条件,并制定了纯铝、高纯铝中微量钛的测定方法,方法简便、准确、灵敏度高、选择性好。仪器及试剂 72型分光光度计。三辛基氧化膦环已烷溶液(简称TOPO):0.02M,称取3.9克试剂溶于500毫升环已烷中。钛标准溶液:称取灼烧过的光谱纯二氧化钛0.1668克置于铂坩埚中,加焦硫酸钾3克熔融、用5:95硫酸浸出熔块、溶液移入500毫升容量瓶中、用
In this paper, the conditions for the photometric determination of titanium by the formation of a stable ternary complex of trioctylphosphine oxide (TOPO), thiocyanate and titanium were studied. The method for determination of trace titanium in pure aluminum and high purity aluminum was developed and the method was simple Accurate, high sensitivity, good selectivity. Instruments and reagents 72 spectrophotometer. Trioctylphosphine oxide cyclohexane solution (referred to as TOPO): 0.02M, weighed 3.9 grams of reagent dissolved in 500 ml of cyclohexane. Titanium standard solution: Weigh the burning of pure titanium dioxide 0.1668 grams of platinum placed in a platinum crucible, add 3 g of potassium pyrosulfate melt, 5:95 sulfuric acid leaching frit, the solution into 500 ml volumetric flask with