Spatio-temporal distribution and environmental risk of arsenic in sediments of the East China Sea
文献类型：期刊论文
| 作者 | Duan, Liqin; Song, Jinming ; Yuan, Huamao; Li, Xuegang; Li, Ning; Song, JM
|
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2013-02-24 |
| 卷号 | 340页码:21-31 |
| 关键词 | Arsenic Sources Risk assessment Burial fluxes Sediments The East China Sea |
| ISSN号 | 0009-2541 |
| 通讯作者 | Song, JM |
| 中文摘要 | To understand the spatial and temporal distributions, environmental risks and sources of As, 38 surface sediments and three sediment cores were collected in the East China Sea (ECS). As concentrations in sediments ranged from 1.70 to 22.1 mu g/g with an average of 11.5 mu g/g. As concentration had positive correlations with clay + silt and total organic carbon (TOC) content with higher As values near the Changjiang Estuary and Hangzhou Bay mouth, indicating fine-grained sediments and riverine inputs as the main factors controlling As distribution. Chemical fraction analysis, sediment quality guidelines, together with geoaccumulation index, suggested that As in sediments of the ECS was at low risk, low adverse effect and moderately polluted level. Vertical profiles of As concentrations and burial fluxes, combined with Pb-210 dating, reflected the As pollution history in the ECS within the last one hundred years. It showed a stable trend before one hundred years ago, a slight increase from the 1900s to 1990s, with peak values in the 1980s and 1990s, and a declining trend after the 1990s to 2009 with a relatively low value in 1998. These trends were closely associated with both natural and anthropogenic activities. (c) 2012 Elsevier B.V. All rights reserved. |
| 英文摘要 | To understand the spatial and temporal distributions, environmental risks and sources of As, 38 surface sediments and three sediment cores were collected in the East China Sea (ECS). As concentrations in sediments ranged from 1.70 to 22.1 mu g/g with an average of 11.5 mu g/g. As concentration had positive correlations with clay + silt and total organic carbon (TOC) content with higher As values near the Changjiang Estuary and Hangzhou Bay mouth, indicating fine-grained sediments and riverine inputs as the main factors controlling As distribution. Chemical fraction analysis, sediment quality guidelines, together with geoaccumulation index, suggested that As in sediments of the ECS was at low risk, low adverse effect and moderately polluted level. Vertical profiles of As concentrations and burial fluxes, combined with Pb-210 dating, reflected the As pollution history in the ECS within the last one hundred years. It showed a stable trend before one hundred years ago, a slight increase from the 1900s to 1990s, with peak values in the 1980s and 1990s, and a declining trend after the 1990s to 2009 with a relatively low value in 1998. These trends were closely associated with both natural and anthropogenic activities. (c) 2012 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Geochemistry & Geophysics |
| 类目[WOS] | Geochemistry & Geophysics |
| 研究领域[WOS] | Geochemistry & Geophysics |
| 关键词[WOS] | HEAVY-METALS ; ORGANIC-CARBON ; BOHAI BAY ; INTERTIDAL SEDIMENTS ; SURFICIAL SEDIMENTS ; ALPHA-SPECTROMETRY ; QUALITY GUIDELINES ; SURFACE SEDIMENTS ; MARINE-SEDIMENTS ; YANGTZE-RIVER |
| 收录类别 | SCI |
| 原文出处 | 10.1016/j.chemgeo.2012.12.009 |
| 语种 | 英语 |
| WOS记录号 | WOS:000319238900003 |
| 公开日期 | 2014-07-17 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/16495]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 通讯作者 | Song, JM |
| 作者单位 | Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Duan, Liqin,Song, Jinming,Yuan, Huamao,et al. Spatio-temporal distribution and environmental risk of arsenic in sediments of the East China Sea[J]. CHEMICAL GEOLOGY,2013,340:21-31. |
| APA | Duan, Liqin,Song, Jinming,Yuan, Huamao,Li, Xuegang,Li, Ning,&Song, JM.(2013).Spatio-temporal distribution and environmental risk of arsenic in sediments of the East China Sea.CHEMICAL GEOLOGY,340,21-31. |
| MLA | Duan, Liqin,et al."Spatio-temporal distribution and environmental risk of arsenic in sediments of the East China Sea".CHEMICAL GEOLOGY 340(2013):21-31. |
入库方式： OAI收割
来源：海洋研究所
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