Spatial distribution, conversion, and ecological risk assessment of hexabromocyclododecanes in the sediments of black-odorous urban rivers nationwide in China
文献类型：期刊论文
| 作者 | Huang, Chenchen3,4; Guan, Kelan1,4; Qi, Xuemeng1,4; Liu, Yin -E3,4; Lu, Qihong5; Zeng, Yanhong1,2,4; Wang, Shanquan5; Luo, Xiaojun1,4 ; Mai, Bixian1,4
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2024-01-10 |
| 卷号 | 907页码:10 |
| 关键词 | Hexabromocyclododecanes Black-odorous urban river Surface sediment Pollution characteristics |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2023.168057 |
| 英文摘要 | Hexabromocyclododecanes (HBCDs) have become a global pollution problem, particularly in China-a major producer and user of HBCDs. However, little is known about the HBCD pollution status in urban rivers nationwide in China. In this study, we comprehensively investigated the pollution characteristics of HBCDs in 173 sediment samples from black-odorous urban rivers across China. Total HBCD concentrations ranged from not-detected to 848 ng/g dw, showing significant differences among the various sampling cities, but generally increasing from west to east China. This distribution pattern of HBCDs was strongly associated with the local industrial output, gross domestic product, and daily wastewater treatment capacity. alpha-HBCD was the predomi-nant diastereoisomer in most sediments, with an average proportion of 63.8 +/- 18.8 %, followed by gamma-HBCD (23.8 +/- 19.5 %) and beta-HBCD (12.4 +/- 6.49 %), showing a significant increase of the alpha-HBCD proportions relative to those in HBCD commercial mixtures and an opposite trend for that of gamma-HBCD. These results suggested that HBCDs might undergo isomerization from gamma-to alpha-HBCD and biotic/abiotic degradation with preference for gamma-HBCD. Of these conversions, the microbial degradation of HBCDs was further verified by the preferential transformation of (- )-alpha-, (+)-13-, and (- )-gamma-HBCDs and the detection of HBCD-degrading bacteria, including Dehalococcoides, Bacillus, Sphingobium, and Pseudomonas. A risk assessment indicated that HBCDs pose low to moderate risks to aquatic organisms in most black-odorous urban river sediments. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001102487500001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/79043]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Zeng, Yanhong |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong MaCao Joint Lab Environm Pollu, Guangzhou 510640, Peoples R China 2.China Univ Min & Technol, Sch Environm Sci & Spatial Informat, Xuzhou 221116, Jiangsu, Peoples R China 3.China Univ Min & Technol, Sch Environm Sci & Spatial Informat, Xuzhou 221116, Jiangsu, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangdong Prov Key Lab Environm Protect & Resource, Guangzhou 510640, Peoples R China 5.Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Chenchen,Guan, Kelan,Qi, Xuemeng,et al. Spatial distribution, conversion, and ecological risk assessment of hexabromocyclododecanes in the sediments of black-odorous urban rivers nationwide in China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,907:10. |
| APA | Huang, Chenchen.,Guan, Kelan.,Qi, Xuemeng.,Liu, Yin -E.,Lu, Qihong.,...&Mai, Bixian.(2024).Spatial distribution, conversion, and ecological risk assessment of hexabromocyclododecanes in the sediments of black-odorous urban rivers nationwide in China.SCIENCE OF THE TOTAL ENVIRONMENT,907,10. |
| MLA | Huang, Chenchen,et al."Spatial distribution, conversion, and ecological risk assessment of hexabromocyclododecanes in the sediments of black-odorous urban rivers nationwide in China".SCIENCE OF THE TOTAL ENVIRONMENT 907(2024):10. |
入库方式： OAI收割
来源：广州地球化学研究所
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