کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6317692 1619192 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spatial distribution of polychlorinated naphthalenes in the atmosphere across North China based on gridded field observations
ترجمه فارسی عنوان
توزیع فضایی نفتالین های پلی کربناته در جو زمین در شمال چین بر اساس مشاهدات فیلد های جدول
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی
Polychlorinated naphthalenes (PCNs) belong to a group of dioxin-like pollutants; however little information is available on PCNs in North China. In this study, gridded field observations by passive air sampling at 90 sites were undertaken to determine the levels, spatial distributions, and sources of PCNs in the atmosphere of North China. A median concentration of 48 pg m−3 (range: 10-2460 pg m−3) for ∑29PCNs indicated heavy PCN pollution. The compositional profile indicated that nearly 90% of PCNs observed were from thermal processes rather than from commercial mixtures. Regarding the source type, a quantitative apportionment suggested that local non-point emissions contributed two-thirds of the total PCNs observed in the study, whereas a point source of electronic-waste recycling site contributed a quarter of total PCNs. The estimated toxic equivalent quantity for dioxin-like PCNs ranged from 0.97 to 687 fg TEQ m−3, with the electronic-waste recycling site with the highest risk.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 180, September 2013, Pages 27-33
نویسندگان
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