کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6307565 | 1618833 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Concentrations and patterns of polychlorinated naphthalenes in surface sediment samples from Wuxi, Suzhou, and Nantong, in East China
ترجمه فارسی عنوان
غلظت و الگوهای نفتالین پلی کربنات در نمونه های سطحی رسوب از وکیسی، سوچو و ننتونگ در شرق چین
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کلمات کلیدی
نفتالین نفتالین، رسوب، وکسسی، سوژو، نانتونگ،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
The concentrations and patterns of polychlorinated naphthalenes (PCNs) were determined in surface sediment samples from Wuxi, Suzhou, and Nantong, in the Yangtze River Delta (East China), which has become urbanized rapidly. The total PCN (tri- to octachlorinated naphthalenes) concentrations in the samples from Wuxi, Suzhou, and Nantong were 0.89-40, 2.8-4600, and 0.60-34 ng/g dry weight, respectively. Unexpectedly high PCN concentrations were found in four of the sediment samples. The PCN concentrations were much higher in the samples from the Beijing-Hangzhou Grand Canal than in the samples from the Yangtze River. The toxic equivalent (TEQ) concentrations (determined from the concentrations of the “dioxin-like” PCNs) ranged from 1.45 Ã 10â7 to 2.16 ng TEQ/g, and the congeners CN-66/67 and CN-73 were the predominant contributors to the TEQs. Independent samples t-tests were performed, and no significant differences were found between the PCN concentrations in the samples from the metropolitan area and the development zone when the four development-zone samples that contained very high PCN concentrations were excluded. The PCN profiles were dominated by the hexa- to octachlorinated naphthalene homologs. The CN-66/67 to CN-71/72 and CN-66 to CN-67 concentration ratios were used to identify specific PCN sources. Emissions from chemical and other industrial plants were found to have strongly influenced the PCN concentrations in sediment in the study area.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 138, November 2015, Pages 668-674
Journal: Chemosphere - Volume 138, November 2015, Pages 668-674
نویسندگان
Linli Zhang, Lifei Zhang, Liang Dong, Yeru Huang, Xiaoxiu Li,