Coupling mechanisms of S-Fe-P in surface sediments under the stresses of high salinity and heavy metals in coastal rivers
Jiang, Ming1,2; Sheng, Yanqing1; Zhao, Guoqiang1,2; Wang, Wenjing1
Source PublicationJOURNAL OF SOILS AND SEDIMENTS
ISSN1439-0108
2021-04-15
Pages12
KeywordInorganic sulfur Phosphorus Reactive iron Coastal sediments
DOI10.1007/s11368-021-02948-5
Corresponding AuthorSheng, Yanqing(yqsheng@yic.ac.cn)
AbstractPurpose The aim of the study was to (1) investigate the distributions of sulfur (S), iron (Fe), and phosphorus (P) in coastal surface sediments under the stresses of high salinity and heavy metals; (2) identify potential sources and the environmental geochemical process of S-Fe mineral accumulation; and (3) elucidate the coupling mechanisms of S-Fe-P in coastal sediments under environmental stresses. Materials and methods The distributions of reduced inorganic sulfur (RIS), inorganic P, and reactive Fe (RFe) in surface sediments in two coastal rivers with heavy metals and high salinity (similar to 50 psu, brine drainage) and in offshore areas in the Bohai Sea were investigated. Results and discussion Pyrite sulfur (CRS) was the predominant fraction of RIS in two rivers (Jiaolai River (JL), 56%; Jiehe River (JH), 72%), whereas acid volatile sulfur (AVS) dominated RIS in their offshore sediments (L, 66%; J, 45%). RFe(II) dominated RFe in JH (70%) and JL (66%), while RFe(III) dominated the fractions in their offshore areas (53%). Coastal surface sediments under the stresses of high salinity and heavy metals were dominated by HCl-P (Ca-bound P) and NaOH-P (Fe- and Al-bound P), respectively. Conclusions Accumulated Fe sulfide was limited by elemental sulfur (ES) availability under high salinity, while it was limited by total organic carbon (TOC) availability when the river was heavily polluted. High salinity produced sulfide-dominated environments, which could reduce the NaOH-P and facilitate HCl-P immobilization. However, the presence of heavy metals resulted in Fe-dominated environments, which could promote metal sulfides formation and increase the NaOH-P fixation.
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; Key Project of Shandong Provincial Natural Science Foundation ; Key Project of Research and Development Plan of Yantai ; Key Research and Development Program of Shandong Province
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS IDWOS:000640482300001
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Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/27294
Collection中科院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
中科院海岸带环境过程与生态修复重点实验室
Corresponding AuthorSheng, Yanqing
Affiliation1.Chinese Acad Sci, Res Ctr Coastal Environm Engn Technol Shandong Pr, Yantai Inst Coastal Zone Res, Yantai, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Ming,Sheng, Yanqing,Zhao, Guoqiang,et al. Coupling mechanisms of S-Fe-P in surface sediments under the stresses of high salinity and heavy metals in coastal rivers[J]. JOURNAL OF SOILS AND SEDIMENTS,2021:12.
APA Jiang, Ming,Sheng, Yanqing,Zhao, Guoqiang,&Wang, Wenjing.(2021).Coupling mechanisms of S-Fe-P in surface sediments under the stresses of high salinity and heavy metals in coastal rivers.JOURNAL OF SOILS AND SEDIMENTS,12.
MLA Jiang, Ming,et al."Coupling mechanisms of S-Fe-P in surface sediments under the stresses of high salinity and heavy metals in coastal rivers".JOURNAL OF SOILS AND SEDIMENTS (2021):12.
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