کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4425926 1309116 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anthropogenic input of polycyclic aromatic hydrocarbons into five lakes in Western China
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Anthropogenic input of polycyclic aromatic hydrocarbons into five lakes in Western China
چکیده انگلیسی

The temporal distribution of polycyclic aromatic hydrocarbons (PAHs) was examined in dated sediments from five lakes in Western China. The surficial concentrations of seven carcinogenic PAHs (BaA, Chyr, BbF, BkF, BaP, DBA and INP, hereafter denoted as PAH7) were highly site-specific. The ΣPAH7 concentrations generally increased from the deep layers to surface sediments. The temporal trends of ΣPAH7 concentrations were clearly different from those reported in developed countries. From 1950s to 1980s, which PAHs started to decrease in developed countries, is the right period that PAHs started to increase rapidly in Western China. The fluxes and mass inventories suggest that the PAH7 input over the past three decades was much more rapidly than it was before the 1980s. Source identification indicates that the PAHs were primarily from biomass burning and domestic coal combustion, and increasing vehicular and/or industrial coal combustion emission was also found.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 158, Issue 6, June 2010, Pages 2175–2180
نویسندگان
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