Apps, PTock, MLA2007-01-112007-06-072007-01-112007-06-072005-08-12Apps, P and Tock, MLA. 2005. Enhanced flavour extraction in continuous liquid-liquid extractors. Journal of chromatography A, vol 1083, 2 January, pp 215-2180021-9673http://hdl.handle.net/10204/1380http://hdl.handle.net/10204/1380Continuous liquid-liquid extraction is a versatile, reliable and robust sample preparation technique, but there is a tendency for the solvent to make channels through the sample, causing uneven and incomplete extraction. A simple, cheap magnetic stirrer that prevents channelling improves extraction efficiency by between 2.8 and 17.6 times. Use of the stir bar extends the application of CLLE to samples that are not free-running liquids, thereby reducing sample manipulations with their associated artefacts. The stir bar can be sealed inside the glass tube, but this has the disadvantage that the end of the glass tube then tends to scratch the bottom of the extractor. Adding fins or other projections to the sides of the bar increases its stirring action. A polyethylene disc encircling the stir bar about half way up was a fast and simple modification that helped if samples contain suspended solids217730 bytesapplication/pdfenElsevier Science BVLiquid-liquid extraction sample techniquesSolvent extractionsChemical sciencesSample preparationMagnetic stirring rodsArticleApps, P., & Tock, M. (2005). Enhanced flavour extraction in continuous liquid-liquid extractors. http://hdl.handle.net/10204/1380Apps, P, and MLA Tock "Enhanced flavour extraction in continuous liquid-liquid extractors." (2005) http://hdl.handle.net/10204/1380Apps P, Tock M. Enhanced flavour extraction in continuous liquid-liquid extractors. 2005; http://hdl.handle.net/10204/1380.TY - Article AU - Apps, P AU - Tock, MLA AB - Continuous liquid-liquid extraction is a versatile, reliable and robust sample preparation technique, but there is a tendency for the solvent to make channels through the sample, causing uneven and incomplete extraction. A simple, cheap magnetic stirrer that prevents channelling improves extraction efficiency by between 2.8 and 17.6 times. Use of the stir bar extends the application of CLLE to samples that are not free-running liquids, thereby reducing sample manipulations with their associated artefacts. The stir bar can be sealed inside the glass tube, but this has the disadvantage that the end of the glass tube then tends to scratch the bottom of the extractor. Adding fins or other projections to the sides of the bar increases its stirring action. A polyethylene disc encircling the stir bar about half way up was a fast and simple modification that helped if samples contain suspended solids DA - 2005-08-12 DB - ResearchSpace DP - CSIR KW - Liquid-liquid extraction sample techniques KW - Solvent extractions KW - Chemical sciences KW - Sample preparation KW - Magnetic stirring rods LK - https://researchspace.csir.co.za PY - 2005 SM - 0021-9673 T1 - Enhanced flavour extraction in continuous liquid-liquid extractors TI - Enhanced flavour extraction in continuous liquid-liquid extractors UR - http://hdl.handle.net/10204/1380 ER -