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The biogeochemical characteristics of phosphorus in coastal sediments under high salinity and dredging conditions.
Chemosphere. 2019 Jan; 215:681-692.C

Abstract

The geochemistry of phosphorus (P) can usually be related to prevailing environmental conditions. To investigate sedimentary P cycling mechanism and biogeochemical characteristics under high salinity and dredging conditions in polluted coastal sediments, thirty-three surface sediment samples were collected from the Jiehe River (JH), Jiaolai River (JL) and their estuarine and offshore areas in the Bohai Sea. Analyses included the Standards, Measurements and Testing method (SMT), Ivanoff organic P (OP) fractionation, and nuclear magnetic resonance (31P-NMR) of soluble P and indicated that HCl-P was the dominant fraction in sediments under high salinity stress. However, under dredging conditions in freshwater river sediments, NaOH-P was the dominant fraction. The potential activity of the OP fraction was reactive in freshwater river sediments, while it was unreactive under high salinity conditions. NaOH-P and HCl-P were found to be mainly derived from anthropogenic inputs, whereas both in-situ biological and anthropogenic inputs were important sources of the OP fractions. High salinity had the potential to increase NaOH-P content in acidic river sediments, resulting in the OP being relatively stable with a low risk level. Sediment dredging potentially increased the regeneration of P from HCl-P and OP and increased the potential activity of OP and IP. Seawater was found to induce removal of the NaOH-P and OP from offshore sediments, resulting in the regeneration of the remaining P at a low level.

Authors+Show Affiliations

Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China.Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China. Electronic address: yqsheng@yic.ac.cn.Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China.Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China.School of Civil Engineering, Yantai University, Yantai, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30347363

Citation

Zhao, Guoqiang, et al. "The Biogeochemical Characteristics of Phosphorus in Coastal Sediments Under High Salinity and Dredging Conditions." Chemosphere, vol. 215, 2019, pp. 681-692.
Zhao G, Sheng Y, Jiang M, et al. The biogeochemical characteristics of phosphorus in coastal sediments under high salinity and dredging conditions. Chemosphere. 2019;215:681-692.
Zhao, G., Sheng, Y., Jiang, M., Zhou, H., & Zhang, H. (2019). The biogeochemical characteristics of phosphorus in coastal sediments under high salinity and dredging conditions. Chemosphere, 215, 681-692. https://doi.org/10.1016/j.chemosphere.2018.10.015
Zhao G, et al. The Biogeochemical Characteristics of Phosphorus in Coastal Sediments Under High Salinity and Dredging Conditions. Chemosphere. 2019;215:681-692. PubMed PMID: 30347363.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The biogeochemical characteristics of phosphorus in coastal sediments under high salinity and dredging conditions. AU - Zhao,Guoqiang, AU - Sheng,Yanqing, AU - Jiang,Ming, AU - Zhou,Haoyuan, AU - Zhang,Huichao, Y1 - 2018/10/16/ PY - 2018/06/04/received PY - 2018/09/23/revised PY - 2018/10/03/accepted PY - 2018/10/23/pubmed PY - 2018/12/12/medline PY - 2018/10/23/entrez KW - Bohai sea KW - Coastal sediments KW - Phosphorus KW - Salinity KW - Sediment dredging SP - 681 EP - 692 JF - Chemosphere JO - Chemosphere VL - 215 N2 - The geochemistry of phosphorus (P) can usually be related to prevailing environmental conditions. To investigate sedimentary P cycling mechanism and biogeochemical characteristics under high salinity and dredging conditions in polluted coastal sediments, thirty-three surface sediment samples were collected from the Jiehe River (JH), Jiaolai River (JL) and their estuarine and offshore areas in the Bohai Sea. Analyses included the Standards, Measurements and Testing method (SMT), Ivanoff organic P (OP) fractionation, and nuclear magnetic resonance (31P-NMR) of soluble P and indicated that HCl-P was the dominant fraction in sediments under high salinity stress. However, under dredging conditions in freshwater river sediments, NaOH-P was the dominant fraction. The potential activity of the OP fraction was reactive in freshwater river sediments, while it was unreactive under high salinity conditions. NaOH-P and HCl-P were found to be mainly derived from anthropogenic inputs, whereas both in-situ biological and anthropogenic inputs were important sources of the OP fractions. High salinity had the potential to increase NaOH-P content in acidic river sediments, resulting in the OP being relatively stable with a low risk level. Sediment dredging potentially increased the regeneration of P from HCl-P and OP and increased the potential activity of OP and IP. Seawater was found to induce removal of the NaOH-P and OP from offshore sediments, resulting in the regeneration of the remaining P at a low level. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/30347363/The_biogeochemical_characteristics_of_phosphorus_in_coastal_sediments_under_high_salinity_and_dredging_conditions_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(18)31863-0 DB - PRIME DP - Unbound Medicine ER -