کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5132636 1378816 2018 5 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله
γ-Fe2O3 magnetic nanoparticle functionalized with carboxylated multi walled carbon nanotube for magnetic solid phase extractions and determinations of Sudan dyes and Para Red in food samples
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
γ-Fe2O3 magnetic nanoparticle functionalized with carboxylated multi walled carbon nanotube for magnetic solid phase extractions and determinations of Sudan dyes and Para Red in food samples
چکیده انگلیسی


- - γ-Fe2O3 (maghemite) and carboxylated-multi walled carbon nanotube (cMWCNT) was used for the magnetic solid phase extraction.
- -Sudan I, II, III, IV, Para Red, Sudan Black B and Sudan Red 7B were determined in chilli products.
- -The cMWCNT-γ-Fe2O3 can be reused at least 20 times without a significant loss of the sorption capacity.

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-dichloromethane-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).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 242, 1 March 2018, Pages 533-537
نویسندگان
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