期刊
FOOD CHEMISTRY
卷 188, 期 -, 页码 619-624出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2015.05.055
关键词
Selenium speciation; Ultrasound assisted; Ionic liquid dispersive liquid liquid microextraction; Graphite furnace atomic absorption spectrometry; Beverages and food samples
资金
- Unit of the Scientific Research Projects of the Gaziosmanpasa University
- Turkish Academy of Sciences
A rapid and environmentally friendly ultrasound assisted ionic liquid dispersive liquid liquid microextraction (USA-IL-DLLME) was developed for the speciation of inorganic selenium in beverages and total selenium in food samples by using graphite furnace atomic absorption spectrometry. Some analytical parameters including pH, amount of complexing agent, extraction time, volume of ionic liquid, sample volume, etc. were optimized. Matrix effects were also investigated. Enhancement factor (EF) and limit of detection (LOD) for Se(IV) were found to be 150 and 12 ng L-1, respectively. The relative standard deviation (RSD) was found 4.2%. The accuracy of the method was confirmed with analysis of LGC 6010 Hard drinking water and NIST SRM 1573a Tomato leaves standard reference materials. Optimized method was applied to ice tea, soda and mineral water for the speciation of Se(IV) and Se(VI) and some food samples including beer, cow's milk, red wine, mixed fruit juice, date, apple, orange, grapefruit, egg and honey for the determination of total selenium. (C) 2015 Elsevier Ltd. All rights reserved.
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