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出 处:《复旦学报(自然科学版)》1992年第2期221-226,共6页Journal of Fudan University:Natural Science
基 金:国家自然科学基金
摘 要:建立了测定萃取剂石油亚砜浓度的实验方法.采用高氯酸电位滴定法,测定了乙酸酐非水体系中石油亚砜浓度.该法稳定可靠、操作简便.运用对应淬液法原理,测定了石油亚砜-煤油-硝酸体系中石油亚砜对硝酸的萃取平衡常数.同时,探讨了石油亚砜萃取硝酸的机理.A experimental method to determine the concentration of extractant petroleum sulphoxides (PSO) has been established. Using perchlorate potential titration method, the concentration of PSO in acetic anhydride non-aqueous system has been measured. The method is easy to operate and reliable. The equilibrium constant of the extraction of nitric acid with PSO in PSO-kerosene-nitric acid system has been obtained by using the corresponding solution principle. The mechanism of PSO extracting nitric acid has also been explored.
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