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钢铁中痕量硒的测定只有少数几篇报导,碲在铁基盐酸介质中严重地干扰硒的测定,为了消除碲等元素的干扰,我们使用了大量的掩蔽剂,如硫脲、邻菲啰琳,EDTA,抗坏血酸等试剂,结果对消除蹄的干扰均无效,最后,向反应池中加入1ml草酸钠(9g/l),才能部分地消除碲、铋、铜等元素的干扰.在酸性介质中,用硼氢化钠作用产生(与氢气一道)挥发性的氢化物,一定要在
Determination of trace selenium in steel only a few articles tellurium tellurium in iron-based hydrochloric acid medium seriously interfere with the determination of selenium, in order to eliminate the interference of tellurium and other elements, we use a large number of masking agents, such as thiourea, phenanthrene Lin, EDTA, ascorbic acid and other reagents, the results of the elimination of hoof interference are invalid, and finally, to the reaction tank by adding 1ml of sodium oxalate (9g / l), in part to eliminate the interference of tellurium, bismuth, , With sodium borohydride effect (together with hydrogen) volatile hydride, must be in