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本文研究了PMBP—泡塑对铝土矿中15个痕量稀土元素的萃取。确定0.3克负载泡塑在50毫升pH2.5的水相介质中萃取9小时可达平衡。稀土元素回收率9 0.0—111.8%.将泡塑灰化解脱,其灰分以发射光谱法测定.共存离子铁、铝、硅对测定存在严重影响,但本法流程可消除此影响。稀土元素检出限0.5—387ppb,以不同方法对本法结果作了对照。用一个铝土矿平行测定11—14次,其RSD除镨、铽为23.3%,28.3%外,其余均在12.0—17.3%之间。
In this paper, the extraction of 15 trace rare earth elements from bauxite by PMBP-foam was studied. Make sure the 0.3g load foam is balanced for 9 hours in 50 ml of aqueous medium at pH 2.5. Recoveries of rare earth elements ranged from 9% to 11%. The ash ashing was released and its ash content was determined by emission spectrometry. Coexistence of ionized iron, aluminum and silicon had a serious impact on the determination, but this procedure eliminates this effect. The detection limit of rare earth elements 0.5-387ppb, with different methods of comparison of the results of this law. With a bauxite parallel determination of 11-14 times, the RSD except praseodymium, terbium 23.3%, 28.3%, the rest were 12.0-17.3%.