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我们在活性氧化铝色层分离的工作中,观察到活性氧化铝对MoO_4~(2-)的吸附作用,并研究了钼的色层分离条件。提出了使用小型活性氧化铝色层吸附柱(简称吸附柱)分离富集微量钼,并消除部份离子对“胶束增溶分光光度法测定钼”的干扰。本文以CTMAB作为阳离子活性剂,在酸性溶液中同溴邻苯三酚红与钼形成蓝色的三元络合物,研究了其光度测定条件。拟定了色层分离光度测定纯铁及钢中微量钼的方法。本法的灵敏度高、重现性与准确度良好,但不适用于含钨试样的
In the work of active alumina color separation, we observed the adsorption of MoO 4 2- by activated alumina, and studied the separation conditions of molybdenum. The separation and enrichment of trace molybdenum using small activated alumina chromatographic column (adsorption column) was proposed and the interference of some ions on the determination of molybdenum by micellar solubilization spectrophotometry was proposed. In this paper, CTMAB as a cationic surfactant, with bromopyrogallol red and molybdenum in acidic solution to form a blue ternary complex, the photometric conditions were studied. A method for the determination of trace molybdenum in pure iron and steel by chromatographic separation was developed. The method of high sensitivity, reproducibility and accuracy, but does not apply to tungsten-containing samples