کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7642971 1494876 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of polycyclic aromatic hydrocarbons in artisanal cachaça by DI-CF-SPME-GC/MS
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Determination of polycyclic aromatic hydrocarbons in artisanal cachaça by DI-CF-SPME-GC/MS
چکیده انگلیسی
Polycyclic aromatic hydrocarbons (PAHs) are carcinogenic to humans and can be found in a variety of environments. This paper describes a cold fiber (CF) solid-phase microextraction (SPME) sampling method with gas chromatography mass spectrometry (GC/MS) to identify 16 PAHs in artisanal cachaça. The method yields good results for some validation parameters. The LOD and LOQ ranged from 0.01 μg L −1 to 0.08 μg L− 1 and from 0.02 μg L −1 to 0.22 μg L −1, respectively. The intra-assay precision shows a coefficient of variation (CV) ranging from 5% to 16%, and the recovery tests varied from 74 ± 12% to 95 ± 7%. The proposed method was attractive as this method extracted higher amounts of PAHs in a single extraction procedure compared with conventional approaches. The method was applied to the analyses of PAHs in 29 artisanal cachaça samples collected in the state of Minas Gerais in Brazil. Average PAH concentrations in these samples were in the range of 0.14 ± 0.06 μg L −1 fluoranthene to 5.77 ± 0.35 μg L −1 dibenzo[a,h]anthracene. The benzo[a]pyrene equivalent (BaPeq) was calculated to assess the health risks associated with PAH exposure. Principal component analysis (PCA) was used to discriminate between different sources of contamination in cachaça.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microchemical Journal - Volume 118, January 2015, Pages 272-277
نویسندگان
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