| Spatiotemporal variability of hydrocarbons in surface sediments from an intensively human-impacted Xiaoqing River-Laizhou Bay system in the eastern China: Occurrence, compositional profile and source apportionment | |
He, Ding; Zhang, Kai; Cui, Xingqian; Tang, Jianhui ; Sun, Yongge
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| 发表期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
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| ISSN | 0048-9697 |
| 2018-12-15 | |
| 卷号 | 645页码:1172-1182 |
| 关键词 | River-estuary system Laizhou Bay Sedimentary hydrocarbons Spatiotemporal variability Source apportionment |
| 研究领域 | Environmental Sciences & Ecology |
| DOI | 10.1016/j.scitotenv.2018.07.193 |
| 产权排序 | [He, Ding; Zhang, Kai; Sun, Yongge] Zhejiang Univ, Sch Earth Sci, Inst Environm & Biogeochem eBig, Hangzhou 310027, Zhejiang, Peoples R China; [Cui, Xingqian] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA; [Tang, Jianhui] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China |
| 作者部门 | 海岸带环境过程实验室 |
| 英文摘要 | Hydrocarbons in coastal sediments record organic matter sources, and thus are widely used to elucidate both natural and anthropogenic inputs and for the estimation of pollution levels. Surface sediments were taken from Xiaoqing River and Laizhou Bay of eastern China in spring and summer of 2014, and were analyzed to determine the characteristics of aliphatic and aromatic hydrocarbons. Various hydrocarbons were identified, including n-alkanes, monomethylated alkanes (MMAs), isoprenoid alkanes, linear alkylbenzenes (LABs), hopanes, steranes and polycyclic aromatic hydrocarbons (PAHs). They were used to track both biogenic (terrestrial plant and microbial inputs) and anthropogenic inputs (petroleum and fossil fuel or biomass burning) in this ecosystem. The major part of hydrocarbons identified came from anthropogenic inputs including petroleum residues and synthetic detergents related hydrocarbons (16.2-90.3%), followed by higher plant (4.5-80.5%) and microbial inputs (0.8-57.5%). Interestingly, significant differences in hydrocarbon concentrations and distributions were observed between spring and summer. In particular, significant higher percentages of microbially derived hydrocarbons, but lower percentages of anthropogenic and vascular plant derived hydrocarbons were observed in summer than spring. Further principal component analyses suggested that the overall distribution of aliphatic hydrocarbons was mainly controlled by seasonality instead of spatiality. In contrast, the distribution of PAHs showed insignificant spatial and seasonal differences. Physical processes such as atmospheric transportation and further deposition, may be factors influencing the distribution of PAHs in the study area with widely biomass and fossil fuel burning. The decoupled distributions of aliphatic and aromatic hydrocarbons warrant further study for a comprehensive understanding of long term sedimentary hydrocarbon sources and input dynamics with increasing human activities. Major finding: Seasonal difference in aliphatic hydrocarbon composition was observed in surface sediments of Laizhou Bay, which is mainly caused by stronger phytoplankton and microbial inputs in summer under the overall high pollution background. (C) 2018 Elsevier B.V. All rights reserved. |
| 文章类型 | Article |
| 资助机构 | National Science Foundation of China [41773098, 41372131] ; Chinese Academy of Sciences [KZZD-398 EW-14] ; "100" talent program of Zhejiang University [188020*194231701/008, 188020-193810201/102] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | POLYCYCLIC AROMATIC-HYDROCARBONS ; NORTHEASTERN TIBETAN PLATEAU ; CARBON ISOTOPIC COMPOSITION ; ORGANIC-MATTER ; ALIPHATIC-HYDROCARBONS ; COASTAL SEDIMENTS ; BOHAI SEA ; POLYAROMATIC HYDROCARBONS ; PETROLEUM-HYDROCARBONS ; SOURCE ROCKS |
| 研究领域[WOS] | Environmental Sciences |
| WOS记录号 | WOS:000445164200117 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/24603 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室 中国科学院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.Zhejiang Univ, Sch Earth Sci, Inst Environm & Biogeochem eBig, Hangzhou 310027, Zhejiang, Peoples R China; 2.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA; 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Ding,Zhang, Kai,Cui, Xingqian,et al. Spatiotemporal variability of hydrocarbons in surface sediments from an intensively human-impacted Xiaoqing River-Laizhou Bay system in the eastern China: Occurrence, compositional profile and source apportionment[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,645:1172-1182. |
| APA | He, Ding,Zhang, Kai,Cui, Xingqian,Tang, Jianhui,&Sun, Yongge.(2018).Spatiotemporal variability of hydrocarbons in surface sediments from an intensively human-impacted Xiaoqing River-Laizhou Bay system in the eastern China: Occurrence, compositional profile and source apportionment.SCIENCE OF THE TOTAL ENVIRONMENT,645,1172-1182. |
| MLA | He, Ding,et al."Spatiotemporal variability of hydrocarbons in surface sediments from an intensively human-impacted Xiaoqing River-Laizhou Bay system in the eastern China: Occurrence, compositional profile and source apportionment".SCIENCE OF THE TOTAL ENVIRONMENT 645(2018):1172-1182. |
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