A simple and sensitive vortex-assisted ionic liquid-dispersive microextraction and spectrophotometric determination of selenium in food samples

作者：Bagda Esra^*; Tuezen Mustafa

来源：Food Chemistry, 2017, 232: 98-104.

DOI：10.1016/j.foodchem.2017.03.104

• Selenium
• Vortex assisted
• Ionic liquid
• Microextraction
• Spectrophotometer
• Food samples

In the present study, a novel and eco-friendly vortex-assisted ionic liquid-based microextraction method was developed for the determination of selenium in food. The microextraction method is based on the liberation of iodine in the presence of selenium; the liberated iodine reacts with I to form I-3. Anionic I-3 reacts with cationic crystal violet dye, and the product is extracted into 1-hexyl-3-methylimidazolium hexafluorophosphate phase in the presence of Triton X-114. The proposed method is linear in the range of 2.0-70 mu g L (1) and has a detection limit of 9.8 x 10 (2) mu g L (1). Relative standard deviations were 3.67% and 2.89% for the five replicate measurements of 14 and 35 mu g L (1) Se(IV), respectively. The proposed method was successfully applied to different food samples (NIST SRM 2976 mussel tissue, pepper, ginger, wheat flour, red lentil, traditional soup, cornflour, cornstarch, and garlic) after microwave digestion.

• 出版日期2017-10-1