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将钍试剂Ⅰ吸着在Ionenaustauscner Ⅲ阴离子交换树脂上,制成“化学改性树脂”,对钍有很高的选择性。用浴一平衡法试验了交换速率、钍试剂Ⅰ在树脂上的浓度和溶液的酸度对钍的吸着的影响。钍的分离和测定系在装有化学改性树脂(每克含钍试剂Ⅰ128毫克)的柱上,在pH2和流速0.25毫升/分完成的。微克级纯钍的平均回收率为96％(七次试验,变动系数3％)镧中微克级钍(钍:镧=3:10~5)的平均回收率为93％(七次试验,变动系数2％)。
The thorium reagent I adsorbed Iononaustauscner Ⅲ anion exchange resin, made of “chemically modified resin”, a high selectivity of thorium. The bath-equilibrium method was used to test the effect of exchange rate, the concentration of thoron I on the resin and the acidity of the solution on the sorption of thorium. Thorium was isolated and assayed on a column containing a chemically modified resin (I288 mg per gram thoron-containing reagent) at a flow rate of 0.25 mL / min at pH 2. The average recovery of micrograms of pure thorium was 96% (seven trials with 3% variation). The average recovery of micrograms of thorium (thorium: lanthanum = 3: 10-5) in lanthanum was 93% Coefficient of 2%).