کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7592637 | 1492114 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improved sample preparation for GC-MS-SIM analysis of ethyl carbamate in wine
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
An improved sample preparation procedure for analysis of carcinogenic ethyl carbamate (EC) in wine by GC-MS-SIM is proposed. Differences over AOAC reference procedure were: (1) use of EC-d5 as internal standard instead of less similar propyl carbamate; (2) extraction by diethyl ether instead of more toxic dichloromethane, and (3) concentration by vacuum automated parallel evaporation instead of more time and work consuming rotary evaporation. Mean recovery was 104.4%, intraday precision was 6.7% (3.4 μg Lâ1) and 1.7% (88.5 μg Lâ1), regression coefficient was 0.999 in the linear working range of 3-89 μg Lâ1, and limits of detection and quantification were 0.4 and 1.2 μg Lâ1. Applicability was demonstrated by analysis (in triplicate) of 5 wine samples. EC concentration ranged from 5.2 ± 0.2 to 29.4 ± 1.5 μg Lâ1. The analytical method is selective, accurate, repeatable, linear, and has similar method performance as the reference method along with the several mentioned advantages.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 177, 15 June 2015, Pages 23-28
Journal: Food Chemistry - Volume 177, 15 June 2015, Pages 23-28
نویسندگان
Ian C.C. Nóbrega, Giuliano E. Pereira, Marileide Silva, Elainy V.S. Pereira, Marcelo M. Medeiros, Danuza L. Telles, Eden C. Jr., Juliane B. Oliveira, Dirk W. Lachenmeier,