PAN-S树脂富集钴的分光光度法测定研究

研究了PAN—S浸渍树脂对Co^2＋的吸附性能。Co^2＋吸附pH值范围为4．7—9．2，最佳pH值为5．4；达到最大吸附容量需25min，树脂对Co^2＋平衡吸附容量是98mg／g干树脂，达到最大吸附容量平衡时用0．1mol／L的HNO，洗脱，洗脱率达98％。该方法建立了PAN—S-树脂富集一分离钴离子的分光光度测定方法，结果令人满意。

Analytical Characteristics and Application of 1-(2-Pyridylazo)-2-naphthol-6-sulphnic Acid Impregnated Resin for Adsorption of Cobalt

This paper has studies theresearch of PAN-S impregnating resin on the properties of the adsorption of Co^2＋ . The adsorption pH range of Co^2 ＋ is 4.7 - 4.7 and the optimum pH is 5.4 ; the time needed to reach maximum adsorption capacity of Co^2 ＋ is 25 rain and resin adsorption capacity for Co^2 ＋ balance is 98 mg/g dry resin; elution rate was 98% when the adsorption capacity reached maximum balance and eluted with 0.1 mol/L HNO3. The spectrophotometric method of PAN-S-resin enrichment and separation of cobalt ions were established and satisfactory results were obtained.