کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
1227567 1494866 2016 5 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Speciation of chromium in edible animal oils after microwave extraction and liquid chromatography inductively coupled plasma mass spectrometry
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Speciation of chromium in edible animal oils after microwave extraction and liquid chromatography inductively coupled plasma mass spectrometry
چکیده انگلیسی


• Speciation of Cr(III) and Cr(VI) in edible animal oils
• Microwave assisted extraction of Cr species using HF, TritonX-100, TBAP, EDTA
• Interference free measurements of Cr using DRC with NH3 reaction gas
• Method validation with NRCC SLRS-3 Riverine Water reference material
• A new Cr compound was found could be Cr complex with fatty acid.

Speciation of chromium has been carried out using reversed phase HPLC and ICP-MS in tandem. Isocratic elution using 0.5 mmol L− 1 tetrabutyl ammonium phosphate (TBAP) and 0.3 mmol L− 1 EDTA in 1% methanol (pH 6.9) as mobile phase separated Cr(III) and Cr(VI) in less than 110 s. Spectral interferences in ICP-MS at m/z 52 and 53 were reduced using NH3 in the DRC. Detection limits were 0.045 and 0.052 ng Cr mL− 1 for Cr(III) and Cr(VI), respectively. This method has been applied to determine Cr compounds present in selected edible animal oils and NRCC SLRS-3 Riverine Water reference material. The animal oils selected are used for different applications including cooking. Chromium species were extracted from oils using microwave heating with 0.4% v/v HF and 2% Triton X-100 in mobile phase. HPLC-ICP-MS results showed good agreement with total chromium concentrations in extracts obtained by ICP-MS analysis. An unknown chromium compound was found in all oil samples with the absence of Cr(VI).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microchemical Journal - Volume 128, September 2016, Pages 274–278
نویسندگان
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