کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8871671 | 1622709 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pollution levels of DDTs and their spatiotemporal trend from sediment records in the Southern Yellow Sea, China
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
اقیانوس شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Pollution levels of DDTs and their spatiotemporal trend from sediment records in the Southern Yellow Sea, China Pollution levels of DDTs and their spatiotemporal trend from sediment records in the Southern Yellow Sea, China](/preview/png/8871671.png)
چکیده انگلیسی
In order to study the pollution levels and spatiotemporal trend of Dichlorodiphenyltrichloroethanes (DDTs) in the Southern Yellow Sea (SYS), thirty-two surface sediment samples and a sediment core have been analyzed, and our results have been compared with previous reports. DDTs contents in our samples ranged from below detection limit to 5.1 ng/g dry weight (d.w.), which presented lower ecological risks in the SYS. Surface sediment results show a seaward increasing trend with high values in the northern region of the central basin of the SYS. Our reconstructed core record and historical data from previous reports reveal an increasing trend from 1905 to 1955 but a decline trend since 1985 for DDTs, which is consistent of the production, usage and banning of DDTs in China. The source identification, based on (DDE + DDD) / DDTs, suggested that aged DDTs were the major contributor, though there were some inputs of fresh DDTs from the usage of 1,1-bis(p-Chlorophenyl)-2,2,2-trichloroethanol (dicofol).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 127, February 2018, Pages 359-364
Journal: Marine Pollution Bulletin - Volume 127, February 2018, Pages 359-364
نویسندگان
Zongshan Zhao, Jiaojiao Jia, Jiaokai Wang, Aifeng Liu, Jing Lan, Hailong Zhang, Meixun Zhao,