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Magnetic effervescent tablet-assisted ionic liquid dispersive liquid–liquid microextraction of selenium for speciation in foods and beverages
- Source :
- Food Additives & Contaminants: Part A. 33:1190-1199
- Publication Year :
- 2016
- Publisher :
- Informa UK Limited, 2016.
-
Abstract
- A novel, simple and rapid method based on magnetic effervescent tablet-assisted ionic liquid dispersive liquid-liquid microextraction (MEA-IL-DLLME) followed by graphite furnace atomic absorption spectrometry (GFAAS) determination was established for the speciation of selenium in various food and beverage samples. In the procedure, a special magnetic effervescent tablet containing CO2 sources (sodium carbonate and sodium dihydrogenphosphate), ionic liquids and Fe3O4 magnetic nanoparticles (MNPs) was used to combine extractant dispersion and magnetic recovery procedures into a single step. The parameters influencing the microextraction efficiency, such as pH of the sample solution, volume of ionic liquid, amount of MNPs, concentration of the chelating agent, salt effect and matrix effect were investigated and optimised. Under the optimised conditions, the limits of detection (LODs) for Se(IV) were 0.021 μg l(-)(1) and the linear dynamic range was 0.05-5.0 μg l(-)(1). The relative standard deviation for seven replicate measurements of 1.0 μg l(-)(1) of Se(IV) was 2.9%. The accuracy of the developed method was evaluated by analysis of the standard reference materials (GBW10016 tea, GBW10017 milk powder, GBW10043 Liaoning rice, GBW10046 Henan wheat, GBW10048 celery). The proposed method was successfully applied to food and beverage samples including black tea, milk powder, mushroom, soybean, bamboo shoots, energy drink, bottled water, carbonated drink and mineral water for the speciation of Se(IV) and Se(VI) with satisfactory relative recoveries (92.0-108.1%).
- Subjects :
- Liquid Phase Microextraction
Health, Toxicology and Mutagenesis
Bambusa
Carbonates
Ionic Liquids
chemistry.chemical_element
Carbonated Beverages
010402 general chemistry
Toxicology
01 natural sciences
Phosphates
Selenium
chemistry.chemical_compound
Limit of Detection
Vegetables
Carbonated drink
Animals
Humans
Effervescent tablet
Magnetite Nanoparticles
Detection limit
Chromatography
Spectrophotometry, Atomic
010401 analytical chemistry
Public Health, Environmental and Occupational Health
food and beverages
General Chemistry
General Medicine
Ferrosoferric Oxide
0104 chemical sciences
Mineral water
Milk
chemistry
Ionic liquid
Sodium carbonate
Graphite furnace atomic absorption
Plant Shoots
Tablets
Food Science
Subjects
Details
- ISSN :
- 19440057 and 19440049
- Volume :
- 33
- Database :
- OpenAIRE
- Journal :
- Food Additives & Contaminants: Part A
- Accession number :
- edsair.doi.dedup.....848b284d435cfdb3283f2d646bef7f00