کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1199797 1493571 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of perfluorinated alkyl acids in corn, popcorn and popcorn bags before and after cooking by focused ultrasound solid–liquid extraction, liquid chromatography and quadrupole-time of flight mass spectrometry
ترجمه فارسی عنوان
تعیین الکل اسیدهای پرفوره شده در ذرت، پاپ کورن و کیسه های پاپ کورن قبل و بعد از پخت و پز با استفاده از متمرکز سولدوز متمرکز، استخراج مایع، کروماتوگرافی مایع و زمان سنجی جرم طیف سنجی پرواز
کلمات کلیدی
الکل اسیدهای فروتروئید، استخراج جامد مایع فراصوتی متمرکز شده، کروماتوگرافی مایع طیف سنجی جرمی چهار ساعته، بسته بندی، ذرت بو داده
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• FUSLE and UHPLC–(QTOF)MS/MS of nine PFCAs and PFOS in corn, popcorn and packaging.
• Complete extraction in one FUSLE cycle of only 10 s.
• Microwave popcorn bags and their content are analyzed before and after cooking.
• PFAA levels from 3.50 to 750 ng/g in packaging (mainly PFHxA). PFOA and PFOS not detected.
• No PFAAs were found in corn and popcorn.

An analytical method is proposed to determine ten perfluorinated alkyl acids (PFAAs) [nine perfluorocarboxylic acids (PFCAs) and perfluorooctane sulfonate (PFOS)] in corn, popcorn and microwave popcorn packaging by focused ultrasound solid–liquid extraction (FUSLE) and ultra high performance liquid chromatography (UHPLC) coupled to quadrupole-time of flight mass spectrometry (QTOF-MS/MS). Selected PFAAs were extracted efficiently in only one 10-s cycle by FUSLE, a simple, safe and inexpensive technique. The developed method was validated for microwave popcorn bags matrix as well as corn and popcorn matrices in terms of linearity, matrix effect error, detection and quantification limits, repeatability and recovery values. The method showed good accuracy with recovery values around 100% except for the lowest chain length PFAAs, satisfactory reproducibility with RSDs under 16%, and sensitivity with limits of detection in the order of hundreds picograms per gram of sample (between 0.2 and 0.7 ng/g). This method was also applied to the analysis of six microwave popcorn bags and the popcorn inside before and after cooking. PFCAs contents between 3.50 ng/g and 750 ng/g were found in bags, being PFHxA (perfluorohexanoic acid) the most abundant of them. However, no PFAAs were detected either corn or popcorn, therefore no migration was assumed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1355, 15 August 2014, Pages 211–218
نویسندگان
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