【摘要】 本文建立了一种测定瓷土中稀土总量的分析方法。在硝酸介质中，稀土元素与二溴邻羧基偶氮氯膦生成蓝色配合物，其最大吸收峰在６４５ ｎｍ 处，比尔定律范围是０—１６ μｇ·ＲＥ／２５ｍｌ，方法选择性好，可不经分离直接测定瓷土中稀土的总量更多还原

【Abstract】 A method for determination of total Rare earth in Ceramic earth has been developed. Rare earth elements (RE) react with DBOKCPA to form a blue complex in nitric acid medium,which gives a maximum absorption at 645 nm,the determination range is 0-16 μg of RE in 25ml solution. Most of the coexisting ions do not interfere with the reaction. It has been used to determine total rare earth in Ceramic earth更多还原