本文拟定了一个对Purex工艺流程溶液中微量氟(1—4微克)的萃取光度测定程序。用三苯锑二氯化物-苯-正戊醇萃取氟,稀NaOH反萃,分光光度法测定氟。样品中存在的铀、铝、锆、铁、镍、铬、钛等杂质用钛铁试剂络合,不影响氟的定量萃取。本工作还用~(18)F核对了一些分光光度法的实验结果。 In this paper, a procedure for the determination of trace fluorine (1-4 μg) in Purex process flow was developed. Fluoride was extracted with triphenylammonium dichloride-benzene-n-amyl alcohol, stripped with dilute NaOH and spectrophotometrically determined. Samples of uranium, aluminum, zirconium, iron, nickel, chromium, titanium and other impurities with titanium iron reagent complex, does not affect the quantitative fluorine extraction. The work also used ~ (18) F to verify the experimental results of some spectrophotometry.