کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4450340 1311696 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of nitro-polycyclic aromatic hydrocarbons in fine and coarse atmospheric particles
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
پیش نمایش صفحه اول مقاله
Study of nitro-polycyclic aromatic hydrocarbons in fine and coarse atmospheric particles
چکیده انگلیسی

The purpose of the present study was to evaluate six nitro-polycyclic aromatic hydrocarbons (NPAHs) in fine (< 2.5 μm) and coarse (2.5–10 μm) atmospheric particles in an urban and industrial area located in the Metropolitan Area of Porto Alegre (MAPA), RS, Brazil. The method used was of NPAHs isolation and derivatization, and subsequent gas chromatography by electron capture detection (CG/ECD). Results revealed a higher concentration of NPAHs, especially 3-nitrofluoranthene and 1-nitropyrene, in fine particles in the sampling sites studied within the MAPA. The diagnostic ratios calculated for PAHs and NPAHs identified the influence of heavy traffic, mainly of diesel emissions. The correlation of NPAHs with other pollutants (NOx, NO2, NO and O3) evidence the influence of vehicular emissions in the MAPA. The seasonal variation evidenced higher NPAHs concentrations in the fine particles during winter for most compounds studied.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Research - Volume 101, Issue 3, August 2011, Pages 631–639
نویسندگان
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