کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4416029 1307767 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Size distribution of black (BC) and total carbon (TC) in Vienna and Ljubljana
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Size distribution of black (BC) and total carbon (TC) in Vienna and Ljubljana
چکیده انگلیسی

During two campaigns in winter 2004, size segregated impactor samples (0.1–10 μm) and filter samples were taken in two Central European cities (Vienna, Austria and Ljubljana, Slovenia). The impactor samples were analyzed for major inorganic ions and short-chain organic acids, total carbon (TC) and black carbon (BC). Maximum concentrations of total mass were 71.6 μg m−3 in Vienna and 73.1 μg m−3 in Ljubljana. Minimum concentrations in Vienna were only half those in Ljubljana. The BC content of the aerosol was similar (ca. 8%), but the BC/TC ratio was higher in Vienna than in Ljubljana (0.39 vs. 0.29), reflecting the different contribution of diesel traffic emissions. The mass median diameters of the submicron size distributions of all major fractions (total mass, TC, BC and SO42-) were smaller in Vienna (0.43 μm, 0.41 μm, 0.38 μm and 0.48 μm, respectively) than in Ljubljana (0.55 μm, 0.44 μm, 0.42 μm and 0.60 μm, respectively). Impactor/filter ratios for total mass were 0.79 in Vienna and 0.82 in Ljubljana, while the ratios for BC were 0.56 in Vienna and 0.49 in Ljubljana. An estimation of the mixing state of accumulation mode BC indicated that 33% and 37% of BC, respectively, are mixed externally to the aerosol in the accumulation size range in Vienna and Ljubljana.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 65, Issue 11, December 2006, Pages 2106–2113
نویسندگان
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