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Colloidal toxic trace metals in urban riverine and estuarine waters of Yantai City, southern coast of North Yellow Sea
Lu, Yuxi1,2; Gao, Xuelu1,2; Song, Jinming2,3,4; Chen, Chen-Tung Arthur5; Chu, Jinling1
2020-05-15
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume717Pages:11
Corresponding AuthorGao, Xuelu(xlgao@yic.ac.cn)
AbstractThe environmental characteristics of colloidal toxic trace metals Cd, Cu and Pb in riverine and estuarine waters collected from two urban rivers of Yantai City in eastern China, the Guangdang and Xin'an Rivers, were investigated using a modified centrifugal ultrafiltration (CUF) method in conjunction with acid extraction and inductively coupled plasma mass spectrometry. The target metals in dissolved pool were divided into four CUF fractions, i.e. <1 kDa, 1-3 kDa, 3-10 kDa and 10 kDa-0.2 mu m, and the results showed that colloidal Cd, Cu and Pb were dominated by 1-10 kDa (1-3 and 3-10 kDa), 1-3 kDa and 10 kDa-0.2 lm fractions, respectively. The coagulation/flocculation of low-molecular-weight (1-10 kDa) colloidal Cd and Cu in the estuaries was obvious and strong, while the enrichment of dissolved Pb in the 10 kDa-0.2 lm fraction may be mainly related to its biogeochemical interactions with Fe-oxides, which is easy to occur in macromolecular colloids. In addition, the actual molecular weight cutoffs (MWCOs) of the three used CUF units with nominal MWCOs of 1, 3 and 10 kDa were determined to be 4.9, 8.5 and 33.9 kDa, respectively, indicating that membrane calibration is essential for explaining the actual fraction of dissolved trace metals and verifying the integrity of ultrafiltration membrane. Overall, the results in this study provide a further understanding of the heterogeneity in biogeochemical features, migration and fate of toxic trace metals in aquatic ecosystems, especially that of the river-sea mixing zone. (C) 2019 Elsevier B.V. All rights reserved.
KeywordAquatic environment Dissolved trace metal Centrifugal ultrafiltration Membrane calibration Geochemical features
DOI10.1016/j.scitotenv.2019.135265
Indexed BySCI
Language英语
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDA23050303] ; National Natural Science Foundation of China[41376083]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000519994800035
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/167030
Collection海洋生态与环境科学重点实验室
Corresponding AuthorGao, Xuelu
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China
4.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Ecol & Environm Sci, Qingdao 266237, Shandong, Peoples R China
5.Natl Sun Yat Sen Univ, Dept Oceanog, Kaohsiung 80424, Taiwan
Recommended Citation
GB/T 7714
Lu, Yuxi,Gao, Xuelu,Song, Jinming,et al. Colloidal toxic trace metals in urban riverine and estuarine waters of Yantai City, southern coast of North Yellow Sea[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,717:11.
APA Lu, Yuxi,Gao, Xuelu,Song, Jinming,Chen, Chen-Tung Arthur,&Chu, Jinling.(2020).Colloidal toxic trace metals in urban riverine and estuarine waters of Yantai City, southern coast of North Yellow Sea.SCIENCE OF THE TOTAL ENVIRONMENT,717,11.
MLA Lu, Yuxi,et al."Colloidal toxic trace metals in urban riverine and estuarine waters of Yantai City, southern coast of North Yellow Sea".SCIENCE OF THE TOTAL ENVIRONMENT 717(2020):11.
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