|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5132381||1378813||2018||6 صفحه PDF||ندارد||دانلود کنید|
â¢A centrifugeless dispersive liquid-liquid microextraction (DLLME) was introduced.â¢The method was applied for determination of six Sudan dyes.â¢The method is environmentally friendly, and is performed in just about 7â¯min.â¢The developed method is simple, fast, and sensitive.
In this work, a novel method, namely centrifugeless dispersive liquid-liquid microextraction, is introduced for the efficient extraction of banned Sudan dyes from foodstuff and water samples. In this method, which is based upon the salting-out phenomenon, in order to accelerate the extraction process, the extraction solvent (1-undecanol, 75â¯Î¼L) is dispersed into the sample solution. Then the mixture is passed through a small column filled with 5â¯g sodium chloride, used as a separating reagent. In this condition, fine droplets of the extraction solvent are floated on the mixture, and the phase separation is simply achieved. This method is environmentally friendly, simple, and very fast, so that the overall extraction time is only 7â¯min. Under the optimal experimental conditions, the preconcentration factors in the range of 90â121â¯were obtained for the analytes. Also good linearities were obtained in the range of 2.5â1200â¯ngâ¯mLâ1 (r2â¯â¥â¯0.993).
Journal: Food Chemistry - Volume 244, 1 April 2018, Pages 1-6