کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6310055 | 1307460 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Atmospheric partitioning and the air-water exchange of polycyclic aromatic hydrocarbons in a large shallow Chinese lake (Lake Chaohu)
ترجمه فارسی عنوان
تقسیم جوی و مبادله هوا و آب از هیدروکربن های آروماتیک چند حلقه ای در یک دریاچه کوچک کم چینی (دریاچه چائوو)
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
The residual levels of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere and in dissolved phase from Lake Chaohu were measured by (GC-MS). The composition and seasonal variation were investigated. The diffusive air-water exchange flux was estimated by a two-film model, and the uncertainty in the flux calculations and the sensitivity of the parameters were evaluated. The following results were obtained: (1) the average residual levels of all PAHs (PAH16) in the atmosphere from Lake Chaohu were 60.85 ± 46.17 ng mâ3 in the gaseous phase and 14.32 ± 23.82 ng mâ3 in the particulate phase. The dissolved PAH16 level was 173.46 ± 132.89 ng Lâ1. (2) The seasonal variation of average PAH16 contents ranged from 43.09 ± 33.20 ng mâ3 (summer) to 137.47 ± 41.69 ng mâ3 (winter) in gaseous phase, from 6.62 ± 2.72 ng mâ3 (summer) to 56.13 ± 22.99 ng mâ3 (winter) in particulate phase, and 142.68 ± 74.68 ng Lâ1 (winter) to 360.00 ± 176.60 ng Lâ1 (summer) in water samples. Obvious seasonal trends of PAH16 concentrations were found in the atmosphere and water. The values of PAH16 for both the atmosphere and the water were significantly correlated with temperature. (3) The monthly diffusive air-water exchange flux of total PAH16 ranged from â1.77 Ã 104 ng mâ2 dâ1 to 1.11 Ã 105 ng mâ2 dâ1, with an average value of 3.45 Ã 104 ng mâ2 dâ1. (4) The results of a Monte Carlo simulation showed that the monthly average PAH fluxes ranged from â3.4 Ã 103 ng mâ2 dâ1 to 1.6 Ã 104 ng mâ2 dâ1 throughout the year, and the uncertainties for individual PAHs were compared. (5) According to the sensitivity analysis, the concentrations of dissolved and gaseous phase PAHs were the two most important factors affecting the results of the flux calculations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 93, Issue 9, November 2013, Pages 1685-1693
Journal: Chemosphere - Volume 93, Issue 9, November 2013, Pages 1685-1693
نویسندگان
Ning Qin, Wei He, Xiang-Zhen Kong, Wen-Xiu Liu, Qi-Shuang He, Bin Yang, Hui-Ling Ouyang, Qing-Mei Wang, Fu-Liu Xu,