کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7598267 | 1492138 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of a modified QuEChERS method for analysis of mycotoxins in rice
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A simple and efficient QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) sample preparation method was modified to provide good analytical results for 14 mycotoxins in rice. The method involved mixing sample with acidified aqueous acetonitrile, followed by salt-out liquid partitioning using MgSO4, NaCl, and citrate buffer salts. The extract was cleaned-up by dispersive solid-phase extraction with MgSO4, PSA, C18, and alumina-neutral. The analysis was performed using ultra-high performance liquid chromatography coupled to triple-quadrupole tandem mass spectrometry (UHPLC-MS/MS). Throughout the validation experiments, 70-98% overall recoveries were achieved with RSDs ⩽7% for most analytes at concentrations 10-100 μg kgâ1. Limit of detections were 0.5-15 μg kgâ1. Inter-laboratory precision was performed by proficiency testing, |z| ⩽2 was considered satisfactory. We compared our modified QuEChERS method against sample preparation using an immunoaffinity column; the recovery and specificity were comparable for the two methods, but the QuEChERS approach was more time- and cost-effective.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 153, 15 June 2014, Pages 44-51
Journal: Food Chemistry - Volume 153, 15 June 2014, Pages 44-51
نویسندگان
Urairat Koesukwiwat, Kunaporn Sanguankaew, Natchanun Leepipatpiboon,