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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Es'haghi, Zarrin Beheshti, Hamed Reza Feizy, Javad |
| Description | Country affiliation: Iran Author Affiliation: Es'haghi Z ( Department of Chemistry, Payame Noor University, Tehran, Iran.) |
| Abstract | In this research, magnetic graphene nanoparticles were prepared and used as adsorbents for preconcentrating the aflatoxins in rice, wheat, and sesame samples. For this purpose, graphene was synthesized by Hummer's method. Magnetically modified graphene formed by the deposition of magnetite $(Fe_{3}O_{4})$ on graphene was used for the separation of aflatoxins $B_{1},$ $B_{2},$ $G_{1},$ and $G_{2}$ from the samples. The extractants were subsequently analyzed with high-performance liquid chromatography and fluorescence detection. Parameters affecting the efficiency of the method were thoroughly investigated. The measurements were done under the optimized conditions. For aflatoxins $B_{1},$ $B_{2},$ $G_{1},$ and $G_{2},$ limits of detection were 0.025, 0.05, 0.05, and 0.075 ng/g and limits of quantification were 0.083, 0.16, 0.16, and 0.23 ng/g, respectively. Accuracy was examined by the determination of the relative recovery of the aflatoxins. The relative recovery of aflatoxins $B_{1},$ $B_{2},$ $G_{1},$ and $G_{2}$ were quite satisfactory (between 64.38 and 122.21% for food samples). Relative standard deviations for within laboratory repeatability (n = 6) were in the range from 1.3 to 3.2. The application of this sorbent for the separation and concentration of the mentioned aflatoxins from food samples was examined. |
| File Format | HTM / HTML |
| ISSN | 16159306 |
| Issue Number | 18 |
| Volume Number | 37 |
| e-ISSN | 16159314 |
| Journal | Journal of Separation Science |
| Language | English |
| Publisher | Wiley-VCH |
| Publisher Date | 2014-09-01 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Analytical Discipline Chemistry Aflatoxins Isolation & Purification Food Analysis Food Contamination Analysis Graphite Chemistry Immunosorbent Techniques Magnetite Nanoparticles Adsorption Chromatography, High Pressure Liquid Instrumentation Oryza Sativa Particle Size Sesamum Solutions Surface Properties Triticum Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Analytical Chemistry Filtration and Separation |
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