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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Shi, Wei Giesy, John P. Yu, Hongxia Xia, Jie Su, Guanyong Zhang, Xiaowei |
| Spatial Coverage | China |
| Description | Country affiliation: China Author Affiliation: Xia J ( State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210089, China.) |
| Abstract | Deterioration of the general ecosystem and specifically quality of the water in Tai Lake (Ch: Taihu), the third largest freshwater in China, is of great concern. However, knowledge on status and trends of dioxin-like compounds in Tai Lake was limited. This study investigated AhR-mediated potency and quantified potential aryl hydrocarbon receptor (AhR) agonists in sediments from four regions (Meiliang Bay, Zhushan Lake, Lake Center, Corner of Zhushan Lake, and Meiliang Bay) of Tai Lake by use of the in vitro H4IIE-luc, cell-based, transactivation, reporter gene assay, and instrumental analysis. Concentrations of 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (Bio-TEQs) in sediments ranged from less than the limit of detection to 114.5 pg/g, dry weight, which indicated that organic extracts of sediments exhibited significant AhR-mediated potencies. Results of the potency balance analysis demonstrated that acid-labile, dioxin-like compounds represented a greater proportion of concentrations of Bio-TEQs in sediments from Tai Lake. Concentrations of 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents calculated as the sum of the product of concentrations of individual congeners and their respective relative potencies (Chem-TEQs) based on polycyclic aromatic hydrocarbons and/or polychlorinated biphenyls represented no more than 10% of the total concentrations of Bio-TEQs. |
| ISSN | 09441344 |
| Issue Number | 2 |
| Volume Number | 21 |
| e-ISSN | 16147499 |
| Journal | Environmental Science and Pollution Research |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2014-01-01 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Dioxins Analysis Environmental Monitoring Methods Geologic Sediments Chemistry Lakes Receptors, Aryl Hydrocarbon Metabolism Water Pollutants, Chemical Biological Assay China Toxicity Luciferases Polychlorinated Biphenyls Polycyclic Hydrocarbons, Aromatic Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine |
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