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本文对支撑液膜萃取用于流动注射在线分离进行了探索。支撑液膜分离的原理是将有机相吸附到能将两种水相分开的微孔膜中，使待分离的物质从一种水相转移到另一水相，从而达到分离的目的。以铀（Ⅵ）为研究对象表明，支撑液膜萃取分离可用于流动注射分析，为复杂体系微量组分提供了又一快速、自动的分析方法。在流动注射系统中，试样中微量铀经磷酸三丁酯（TBP）支撑液膜萃取分离后，在已有的测铀（Ⅵ）条件下测定，方法的测定范围为10～100μg／mL铀（Ⅵ），测定的相对标准偏差为0.9％，每小时可以完成20次样品测定，膜使用寿命为1个月（100个样品次以上）。
This article explores the use of supported liquid membrane extraction for online separation of flow injection. The principle of supporting liquid membrane separation is that the organic phase is adsorbed into the microporous membrane which separates the two water phases, so that the substance to be separated is transferred from one aqueous phase to another aqueous phase for the purpose of separation. Taking uranium (Ⅵ) as the research object, the support liquid membrane extraction and separation can be used for flow injection analysis, providing another rapid and automatic analysis method for the trace components of complex systems. In the flow injection system, the trace amount of uranium in the sample is extracted and separated by the supported liquid membrane of tributyl phosphate (TBP), and then the uranium (10 ~ 100μg / mL) is measured under the existing uranium (Ⅵ) (Ⅵ). The relative standard deviation was 0.9%, and the determination of 20 samples per hour was completed. The service life of membrane was 1 month (more than 100 samples).