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1苯基—3甲基—4苯甲酰基吡唑酮(PMBP)作为金属离子的螯合萃取剂,已得到不少应用。PMBP在分析化学上的某些应用曾有报导。用PMBP萃取示踪量锆~(95)的工作提供了从复杂组份中用PMBP萃取分离微量锆的可能性。在本工作进行中,看到了用PMBP萃取分离后测定矿石中少量锆的报告。本文着重研究了0.01M PMBP的苯溶液对微量锆在盐酸、硝酸和高氯酸介质中完全萃取的有关条件,以及在6N盐酸、3N硝酸和3N过氯酸中进行萃取时水相中共存离子对微量锆测定的影响,对铜-锡合金、镍-锆-铁合金、低合金钢和金属钒中微量锆的分析,提出了在适宜浓度的酸介质中用PMBP萃取分离,用验证了的偶氮砷Ⅲ法进行比色测定的方案,取得了较为满意的结果。
1 Phenyl-3-methyl-4-benzoylpyrazolone (PMBP) has been widely used as a chelating agent for metal ions. Some applications of PMBP in analytical chemistry have been reported. The extraction of tracer Zirconium (95) with PMBP provides the possibility of extracting trace amounts of zirconium from PMBP using complex components. In the course of this work, we have seen the report of a small amount of zirconium in ore measured by PMBP extraction and separation. This article focuses on the conditions for the complete extraction of trace amounts of zirconium in hydrochloric acid, nitric acid and perchloric acid medium by benzene solution of 0.01M PMBP and the coexistence of ions in aqueous phase when extracted in 6N hydrochloric acid, 3N nitric acid and 3N perchloric acid On the determination of trace zirconium, copper-tin alloy, nickel-zirconium-iron alloy, low alloy steel and vanadium in trace amounts of zirconium was proposed in the appropriate concentration of acid medium with PMBP extraction and separation, with the proven even Nitrogen arsenic Ⅲ colorimetric assay program, and achieved satisfactory results.