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新试剂偶氮氯膦mN(理化检验16,1980)是在磷酸-草酸-焦磷酸钠体系中,可在钇组稀土存在下,测定铈组稀土。由于这一特点也改善了地质样品中测定铈组稀土元素的条件。为了适应地质样品中的复杂情况,我们做了30个干扰离子的试验,在下列微克数以内者如钾(Ⅰ)2500、铵(Ⅰ)2500、镉(Ⅱ)500、锰(Ⅱ)500、镁(Ⅱ)500、钼(Ⅳ)500、铋(Ⅱ)500、铅(Ⅱ)500、镍(Ⅱ)200、钨(Ⅵ)150、钡(Ⅱ)
The new reagent chlorophosphonazo mN (physical and chemical test 16,1980) is phosphoric acid - oxalic acid - sodium pyrophosphate system, rare earths in the presence of yttrium group, the determination of rare earth cerium group. As a result of this feature, the conditions for the determination of rare earth elements in the cerium group in geological samples are also improved. In order to adapt to the complex situation in geological samples, we have done 30 experiments of interfering ions, such as potassium (I) 2500, ammonium (I) 2500, cadmium (II) 500, manganese (II) (Ⅱ) 500, Molybdenum (Ⅳ) 500, Bismuth 500, Lead 500, Nickel 200, Tungsten 150, Barium II,