کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5133248 | 1492062 | 2017 | 7 صفحه PDF | دانلود رایگان |
- Chitosan was used as a new dispersive agent in DLLME method.
- This is a green approach for DLLME of Cu(II) from edible oil without centrifugation.
- The rapid microextraction procedure can be performed in <1Â min.
- The developed method was suitably applied for determination of Cu(II) in edible oils.
A green approach using chitosan solution as a novel bio-dispersive agent for the dispersive liquid-liquid microextraction (DLLME) of trace amounts of Cu(II) in edible oils is presented. An emulsion was formed by mixing the oil sample with 300 µL of 0.25% (w/v) chitosan solution containing 200 µL of 6 mol Lâ1 HCl. Deionized water was used to induce emulsion breaking without centrifugation. The centrifuged Cu(II) extract was collected and analyzed using an inductively coupled plasma-optical emission spectrometer. The detection and quantitation limits were 2.1 and 6.8 µg Lâ1, respectively. Trace amounts of Cu(II) in six edible oil samples were tested under optimum conditions for DLLME, with a recovery ranging from 90.3% to 109.3%. Therefore, the new dispersive agent in DLLME offers superior performance owing to the non-toxic nature of the solvent, short extraction time, high sensitivity, and easy operation.
Journal: Food Chemistry - Volume 230, 1 September 2017, Pages 398-404