期刊
ANALYTICAL METHODS
卷 5, 期 19, 页码 4991-4998出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ay41251b
关键词
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资金
- EPSRC through a Doctoral Training Centre in Plastic Electronics [EP/G037515/1]
- Royal Commission for the Exhibition of 1851
- EU Framework 7 Project SiNAPS
- EPSRC [EP/J021199/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [1104262, 1030417, EP/J021199/1] Funding Source: researchfish
We describe a simple method for the direct inline separation of two immiscible liquids based on the selective wetting and permeation of a porous polytetrafluoroethylene capillary by one of the liquids. Using water dispersed in fluorous carrier fluid as a test system, quantitative recovery of the water from the carrier fluid is achieved over a wide range of flow conditions, with no contamination by the fluorous component even when present in large (ten-fold) excess. The exiting water stream may be readily redispersed by injecting additional carrier fluid downstream, allowing for repeated switching between the segmented and continuous flow regimes - a critical requirement for multistep chemical processing. The separator is shown to simplify in-line sample analysis by allowing measurements to be carried out quasi-statically without the need for fast instrumentation synchronised to the segmented water flow.
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