کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7643648 | 1494884 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A sensitive GC/MS method using cold fiber SPME to determine polycyclic aromatic hydrocarbons in spring water
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Polycyclic aromatic hydrocarbons (PAH) are carcinogenic to humans and can be found in various environments. This paper describes a cold fiber (CF) solid-phase microextraction (SPME) sampling method with gas chromatography mass spectrometry (GC/MS) to identify 16 PAH in spring water. The method yields good results for some validation parameters. The LOD and LOQ ranged from 7.10 to 57.96 ng Lâ 1 and from 23.60 to 193.19 ng Lâ 1, respectively. The intra-assay precision shows a coefficient of variation (CV) ranging from 4.38 to 17.65%, and recovery tests varied from 76 ± 13% to 99 ± 8%. The proposed method was attractive, as it extracted higher amounts of PAH in a single extraction procedure in comparison with conventional approaches. The method was applied to the analyses of PAH in twenty-four spring water samples collected in Divinópolis City, Minas Gerais, Brazil. Average PAH concentrations were in the range of 62.80 ± 10.40 ng Lâ 1 for Benzo[a]anthracene and 146.58 ± 98.98 ng Lâ 1 for Benzo[a]pyrene.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microchemical Journal - Volume 110, September 2013, Pages 209-214
Journal: Microchemical Journal - Volume 110, September 2013, Pages 209-214
نویسندگان
Helvécio C. Menezes, Maria José N. Paiva, Rosimeire R. Santos, Luciano P. Sousa, Susana F. Resende, Juliano A. Saturnino, Breno P. Paulo, Zenilda L. Cardeal,