کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6333033 | 1619802 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
PCDD/Fs and dioxin-like PCBs in surface sediments from Lake Victoria, East Africa
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: PCDD/Fs and dioxin-like PCBs in surface sediments from Lake Victoria, East Africa PCDD/Fs and dioxin-like PCBs in surface sediments from Lake Victoria, East Africa](/preview/png/6333033.png)
چکیده انگلیسی
Surface sediments (< 60 cm) from the Napoleon Gulf and Thurston Bay on the northern shore of Lake Victoria were analyzed for polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and dioxin-like polychlorinated biphenyls (dl-PCBs). Fifteen PCDD/Fs and eleven dl-PCBs were found in 75.5% of the samples. The maximum concentrations of PCDD/Fs and dl-PCBs were 44.1 and 136 pg gâ 1 dry weight (dw), respectively. Octachlorodibenzo-p-dioxin was the predominant PCDD/F congener at the Napoleon Gulf and Thurston Bay area. Regarding the dl-PCBs, a variation in levels was observed between the mono-ortho PCBs and non-ortho PCBs, with the former having higher levels than the latter. The PCDD/F and dl-PCB levels, in the sediments of Napoleon Gulf, which is near urban centers and industrial areas were markedly higher (α â¤Â 0.05) than those from the Thurston Bay, which is offshore, suggesting that human activities could be sources of the pollutants to the surrounding water resources. World Health Organization-toxic equivalency quotients (WHO-TEQs) lay in the range of 0.07-5.53 pg gâ 1 dw for PCDD/Fs and 0.01-0.23 pg gâ 1 dw for dl-PCBs. 23.1% of samples from the Napoleon Gulf had their results above the set WHOPCDD/Fs-TEQ value.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volumes 454â455, 1 June 2013, Pages 528-533
Journal: Science of The Total Environment - Volumes 454â455, 1 June 2013, Pages 528-533
نویسندگان
Patrick Ssebugere, Bernard T. Kiremire, Bernhard Henkelmann, Silke Bernhöft, John Wasswa, Gabriel N. Kasozi, Karl-Werner Schramm,