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Spatial distributions and sources of heavy metals in sediments of the Changjiang Estuary and its adjacent coastal areas based on mercury, lead and strontium isotopic compositions
Cheng, Yaxin1; Zhang, Rui1,2,3,4,5,6; Li, Tiegang7,8,9; Zhang, Fan10; Russell, James4; Guan, Minglei1; Han, Qi11; Zhou, Yurou10; Xiao, Xin10; Wang, Xiqi10
2019-03-01
Source PublicationCATENA
ISSN0341-8162
Volume174Pages:154-163
Corresponding AuthorZhang, Rui(rzhang_838@163.com) ; Li, Tiegang(tgli@fio.org.cn)
AbstractThe distribution, source and fate of the heavy metals mercury (Hg) and lead (Pb) in surface sediments from the East China Sea (ECS) were studied using mercury, lead and strontium (Sr) isotopic ratios. Hydrodynamic circulation and the sedimentary depositional process within the ECS were the dominant factors controlling the distribution and fate of heavy metals, referring from relationships of heavy metals (Hg and Pb) concentrations and total organic carbon (TOC) and clay contents. Spatial variations in Hg isotopic compositions (delta Hg-220) were observed in the ECS, with delta Hg-202 ranging from -1.86 to -0.83 parts per thousand and Delta Hg-199 ranging from -0.07 to +0.26 parts per thousand. The high delta Hg-202 values and relatively negative Delta Hg-199 values in estuarine and inner shelf sites indicated that the riverine inputs from Changjiang River played an important role in delivering Hg to ECS. In contrast, Hg isotopic signatures in outer shelf sediments had relatively low delta Hg-202 and positive Delta Hg-199, implying that atmospheric Hg deposition could be a relatively dominant source for Hg. Using these Hg isotope compositions, the source attributions of sediments in ECS were estimated based on a triple mixing model, suggesting that river-dominated inputs, discharging pollutants from industrial sources, and atmospheric deposition could dominate in the occurrence and fate of Hg in surface sediments of ECS. Moreover, the results of Pb and Sr isotopic ratios in surface sediment samples and potential sources showed that the Pb accumulated in the ECS was mainly from background and anthropogenic sources, with the contribution rates of 45% and 55%, respectively.
KeywordMercury Lead Isotopic tracer Source identification East China Sea Anthropogenic inputs
DOI10.1016/j.catena.2018.10.039
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41406055] ; National Natural Science Foundation of China[41230959] ; National Natural Science Foundation of China[41476043] ; National Natural Science Foundation of China[41506106] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA11030104] ; National Program on Global Change and Air-Sea Interaction[GASI-GEOGE-06-02] ; National Program on Global Change and Air-Sea Interaction[GASI-GEOGE-04] ; International Postdoctoral Exchange Fellowship Program[20160073] ; Natural Science Foundation of Jiangsu Province[BK20170451] ; Natural Science Foundation of Jiangsu Province[BE2016701] ; Six Talent Peaks Project in Jiangsu Province[JNHB-143] ; Natural Science Foundation of Lianyungang City[SH1506] ; Natural Science Foundation of Lianyungang City[CN1510]
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000456754600014
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/160680
Collection海洋地质与环境重点实验室
Corresponding AuthorZhang, Rui; Li, Tiegang
Affiliation1.Huaihai Inst Technol, Sch Geodesy & Geomat Engn, Lianyungang 222005, Jiangsu, Peoples R China
2.Huaihai Inst Technol, Jiangsu Key Lab Marine Bioresources & Environm, Lianyungang 222005, Jiangsu, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
4.Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA
5.Huaihai Inst Technol, Coinnovat Ctr Jiangsu Marine Bioind Technol, Lianyungang 222005, Jiangsu, Peoples R China
6.Jiangsu Marine Resources Dev Res Inst, Lianyungang 222005, Jiangsu, Peoples R China
7.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Shandong, Peoples R China
8.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
9.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
10.Huaihai Inst Technol, Dept Chem Engn, Lianyungang 222005, Jiangsu, Peoples R China
11.China Univ Geosci, Sch Ocean Sci, Beijing 100083, Peoples R China
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Cheng, Yaxin,Zhang, Rui,Li, Tiegang,et al. Spatial distributions and sources of heavy metals in sediments of the Changjiang Estuary and its adjacent coastal areas based on mercury, lead and strontium isotopic compositions[J]. CATENA,2019,174:154-163.
APA Cheng, Yaxin.,Zhang, Rui.,Li, Tiegang.,Zhang, Fan.,Russell, James.,...&Wang, Xiqi.(2019).Spatial distributions and sources of heavy metals in sediments of the Changjiang Estuary and its adjacent coastal areas based on mercury, lead and strontium isotopic compositions.CATENA,174,154-163.
MLA Cheng, Yaxin,et al."Spatial distributions and sources of heavy metals in sediments of the Changjiang Estuary and its adjacent coastal areas based on mercury, lead and strontium isotopic compositions".CATENA 174(2019):154-163.
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