Article: γ-Fe2O3 magnetic nanoparticle functionalized withcarboxylatedmultiwalledcarbon nanotube for magnetic solid phase extractions and determinations of Sudan dyes and Para Red in food samples
2017
Abstract: Hybrid nanostructures composed of γ-Fe2O3 (maghemite) and carboxylated-multi walled carbon nanotube (cMWCNT) were used for the magnetic solid phase extractions and determination of Sudan I, II, III, IV, Para Red, Sudan Black B and Sudan Red 7B in chili ... ...
| Abstract | Hybrid nanostructures composed of γ-Fe2O3 (maghemite) and carboxylated-multi walled carbon nanotube (cMWCNT) were used for the magnetic solid phase extractions and determination of Sudan I, II, III, IV, Para Red, Sudan Black B and Sudan Red 7B in chili products. High performance liquid chromatography (HPLC) was employed for the measurements. Limit of quantification (LOQ) values were found in the range 0.44-2.82 ng mL-1 for analytes. The best extraction parameters were determined as pH 8.0, 40 mg of magnetic nanoparticle, 4.0 min of contact time, 0.3 mL desorption by acetonitrile. The samples were dissolved in acetone-dichlorometane-methanol (3:2:1, v/v/v) and diluted with acetonitrile-methanol (v/v; 80:20) before the method was applied. Concentrations of Sudan dyes and Para Red were determined in four samples of chili powder from less than LOQ to 31.21±1.6 ng g-1, two samples of chili tomato sauces (lower than LOQ) and two samples of ketchup (lower than LOQ). |
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| Keywords | Sudan dyes ; acetonitrile ; carbon nanotubes ; desorption ; high performance liquid chromatography ; ketchup ; maghemite ; magnetism ; nanoparticles ; pH ; tomato sauce | |||||
| Language | English | |||||
| Size | p. . | |||||
| Publishing place | Elsevier Ltd | |||||
| Document type | Article | |||||
| Note | Pre-press version | |||||
| ZDB-ID | 243123-3 | |||||
| ISSN | 1873-7072 ; 0308-8146 | |||||
| ISSN (online) | 1873-7072 | |||||
| ISSN | 0308-8146 | |||||
| DOI | 10.1016/j.foodchem.2017.09.039 | |||||
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| Database | NAL-Catalogue (AGRICOLA) |
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