Salinity and redox conditions affect the methyl mercury formation in sediment of Suaeda heteroptera wetlands of Liaoning province, Northeast China
Using a laboratory simulation experiment, we studied the trend of change in methylmercury (MeHg) content of sediments in response to the changing salinity of flooding water (deionized water, 0.5%, 1.0%, 1.5%, and 2.0%) and sulfate-reducing bacteria (SRB) content for both the surface layer (0–10 cm)...
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| Veröffentlicht in: | Marine pollution bulletin 2019-05, Vol.142, p.537-543 |
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| creator | Li, Hang Zheng, Dongmei Yang, Jisong Wu, Chenghao Zhang, Shiwei Li, Huiying Ma, Huanchi |
| description | Using a laboratory simulation experiment, we studied the trend of change in methylmercury (MeHg) content of sediments in response to the changing salinity of flooding water (deionized water, 0.5%, 1.0%, 1.5%, and 2.0%) and sulfate-reducing bacteria (SRB) content for both the surface layer (0–10 cm) and the bottom layer (10–20 cm) of Suaeda heteroptera wetland sediments in the Liaohe estuary under anaerobic and aerobic conditions, respectively. The results showed that under AAC (anaerobic conditions), the MeHg content in the surface and bottom sediment layers increased first and then decreased over time and was highest at the 14th day. In contrast, under AC (aerobic conditions), the MeHg content in sediments of both layers increased slowly with increasing test time. The MeHg content in sediments increased first and then decreased with rising salinity and was highest at a salinity of 1.0%. Among the samples collected at different experimental stages, the SRB content in the sediments showed a decreasing trend with rising flooding salinity under AAC and AC. The MeHg and SRB contents were higher under anaerobic conditions than under aerobic conditions. Linear fitting results showed that there was no linear correlation between MeHg contents and SRB quantities in surface and bottom sediments under AAC and AC (R2 |
| doi_str_mv | 10.1016/j.marpolbul.2019.03.066 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_2246241275</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0025326X19302516</els_id><sourcerecordid>2260081306</sourcerecordid><originalsourceid>FETCH-LOGICAL-c399t-c3b117484f867f9f1a89914d88148094a07ce694213ceb0dae4fdb4ea1b68e3d3</originalsourceid><addsrcrecordid>eNqFkc1uEzEQgC0EomnhFcASFw7N4r94d49VBBQpKoeCxM3y2mPiaNcOtrclr8ET11FKD1y4zBzmmx_Nh9BbShpKqPywayad9nEc5rFhhPYN4Q2R8hla0K7tl5xL_hwtCGGrJWfyxxk6z3lHCGlZS1-iM04ZZ5yvFujPrR598OWAdbA4gY2_sYnB-uJjyFg7B6bgsgU8QdkexpqSmdMBu5gmfYSwDziD9ROEgqPDt7MGq_EWCqS4r0HjeyhjHZ-P5Y3XMfjwE-9TvPPBwCW-iaku0Lng9dYH_Qq9cHrM8PoxX6Dvnz5-W18vN18_f1lfbZaG932pcaC0FZ1wnWxd76ju-p4K23VUdKQXmrQGZC8Y5QYGYjUIZwcBmg6yA275BXp_mlsv-TVDLmry2cBYT4U4Z8WYkExQ1q4q-u4fdBfnFOp1lZKEdJQTWan2RJkUc07g1D756umgKFFHbWqnnrSpozZFuKraauebx_nzMIF96vvrqQJXJwDqQ-48JJWNh_o961MVpGz0_13yANqzsCM</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2260081306</pqid></control><display><type>article</type><title>Salinity and redox conditions affect the methyl mercury formation in sediment of Suaeda heteroptera wetlands of Liaoning province, Northeast China</title><source>MEDLINE</source><source>ScienceDirect Journals (5 years ago - present)</source><creator>Li, Hang ; Zheng, Dongmei ; Yang, Jisong ; Wu, Chenghao ; Zhang, Shiwei ; Li, Huiying ; Ma, Huanchi</creator><creatorcontrib>Li, Hang ; Zheng, Dongmei ; Yang, Jisong ; Wu, Chenghao ; Zhang, Shiwei ; Li, Huiying ; Ma, Huanchi</creatorcontrib><description>Using a laboratory simulation experiment, we studied the trend of change in methylmercury (MeHg) content of sediments in response to the changing salinity of flooding water (deionized water, 0.5%, 1.0%, 1.5%, and 2.0%) and sulfate-reducing bacteria (SRB) content for both the surface layer (0–10 cm) and the bottom layer (10–20 cm) of Suaeda heteroptera wetland sediments in the Liaohe estuary under anaerobic and aerobic conditions, respectively. The results showed that under AAC (anaerobic conditions), the MeHg content in the surface and bottom sediment layers increased first and then decreased over time and was highest at the 14th day. In contrast, under AC (aerobic conditions), the MeHg content in sediments of both layers increased slowly with increasing test time. The MeHg content in sediments increased first and then decreased with rising salinity and was highest at a salinity of 1.0%. Among the samples collected at different experimental stages, the SRB content in the sediments showed a decreasing trend with rising flooding salinity under AAC and AC. The MeHg and SRB contents were higher under anaerobic conditions than under aerobic conditions. Linear fitting results showed that there was no linear correlation between MeHg contents and SRB quantities in surface and bottom sediments under AAC and AC (R2 < 0.1). Collectively, these results suggest an important role for flooding salinity and anaerobic-aerobic conditions in the production of MeHg in S. heteroptera wetlands of the Liaohe estuary, and may predict the ecological risk of methylmercury according to the change of salinity.
•MeHg in sediments response to the change of salinity (CK, 0.5%, 1.0%, 1.5%, and 2.0%) of water was studied.•The highest MeHg occurred at 1.0% salinity of water and MeHg in all sediment increased substantially.•MeHg in sediment increased in less extent in the aerobic conditions compared to the anaerobic conditions.•Other bacteria apart from SRB might be responsible for the MeHg change in such estuary environment.</description><identifier>ISSN: 0025-326X</identifier><identifier>EISSN: 1879-3363</identifier><identifier>DOI: 10.1016/j.marpolbul.2019.03.066</identifier><identifier>PMID: 31232335</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Aerobic conditions ; Anaerobic conditions ; Animals ; Anoxic conditions ; Bacteria ; Bottom sediments ; Chenopodiaceae ; China ; Deionization ; Dimethylmercury ; Environmental Monitoring ; Environmental risk ; Estuaries ; Estuarine dynamics ; Estuarine environments ; Flooding ; Floods ; Geologic Sediments - chemistry ; Geologic Sediments - microbiology ; Mercury ; Mercury (metal) ; Methyl mercury ; Methylmercury ; Methylmercury Compounds - analysis ; Methylmercury Compounds - chemistry ; Oxic conditions ; Oxidation-Reduction ; Oxidoreductions ; Salinity ; Salinity effects ; Sediment ; Sediments ; Suaeda heteroptera ; Sulfate reduction ; Sulfate-reducing bacteria ; Sulphate reduction ; Surface layers ; Water Pollutants, Chemical - analysis ; Water Pollutants, Chemical - chemistry ; Wetland sediments ; Wetlands</subject><ispartof>Marine pollution bulletin, 2019-05, Vol.142, p.537-543</ispartof><rights>2019</rights><rights>Copyright © 2019. Published by Elsevier Ltd.</rights><rights>Copyright Elsevier BV May 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c399t-c3b117484f867f9f1a89914d88148094a07ce694213ceb0dae4fdb4ea1b68e3d3</citedby><cites>FETCH-LOGICAL-c399t-c3b117484f867f9f1a89914d88148094a07ce694213ceb0dae4fdb4ea1b68e3d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0025326X19302516$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31232335$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Hang</creatorcontrib><creatorcontrib>Zheng, Dongmei</creatorcontrib><creatorcontrib>Yang, Jisong</creatorcontrib><creatorcontrib>Wu, Chenghao</creatorcontrib><creatorcontrib>Zhang, Shiwei</creatorcontrib><creatorcontrib>Li, Huiying</creatorcontrib><creatorcontrib>Ma, Huanchi</creatorcontrib><title>Salinity and redox conditions affect the methyl mercury formation in sediment of Suaeda heteroptera wetlands of Liaoning province, Northeast China</title><title>Marine pollution bulletin</title><addtitle>Mar Pollut Bull</addtitle><description>Using a laboratory simulation experiment, we studied the trend of change in methylmercury (MeHg) content of sediments in response to the changing salinity of flooding water (deionized water, 0.5%, 1.0%, 1.5%, and 2.0%) and sulfate-reducing bacteria (SRB) content for both the surface layer (0–10 cm) and the bottom layer (10–20 cm) of Suaeda heteroptera wetland sediments in the Liaohe estuary under anaerobic and aerobic conditions, respectively. The results showed that under AAC (anaerobic conditions), the MeHg content in the surface and bottom sediment layers increased first and then decreased over time and was highest at the 14th day. In contrast, under AC (aerobic conditions), the MeHg content in sediments of both layers increased slowly with increasing test time. The MeHg content in sediments increased first and then decreased with rising salinity and was highest at a salinity of 1.0%. Among the samples collected at different experimental stages, the SRB content in the sediments showed a decreasing trend with rising flooding salinity under AAC and AC. The MeHg and SRB contents were higher under anaerobic conditions than under aerobic conditions. Linear fitting results showed that there was no linear correlation between MeHg contents and SRB quantities in surface and bottom sediments under AAC and AC (R2 < 0.1). Collectively, these results suggest an important role for flooding salinity and anaerobic-aerobic conditions in the production of MeHg in S. heteroptera wetlands of the Liaohe estuary, and may predict the ecological risk of methylmercury according to the change of salinity.
•MeHg in sediments response to the change of salinity (CK, 0.5%, 1.0%, 1.5%, and 2.0%) of water was studied.•The highest MeHg occurred at 1.0% salinity of water and MeHg in all sediment increased substantially.•MeHg in sediment increased in less extent in the aerobic conditions compared to the anaerobic conditions.•Other bacteria apart from SRB might be responsible for the MeHg change in such estuary environment.</description><subject>Aerobic conditions</subject><subject>Anaerobic conditions</subject><subject>Animals</subject><subject>Anoxic conditions</subject><subject>Bacteria</subject><subject>Bottom sediments</subject><subject>Chenopodiaceae</subject><subject>China</subject><subject>Deionization</subject><subject>Dimethylmercury</subject><subject>Environmental Monitoring</subject><subject>Environmental risk</subject><subject>Estuaries</subject><subject>Estuarine dynamics</subject><subject>Estuarine environments</subject><subject>Flooding</subject><subject>Floods</subject><subject>Geologic Sediments - chemistry</subject><subject>Geologic Sediments - microbiology</subject><subject>Mercury</subject><subject>Mercury (metal)</subject><subject>Methyl mercury</subject><subject>Methylmercury</subject><subject>Methylmercury Compounds - analysis</subject><subject>Methylmercury Compounds - chemistry</subject><subject>Oxic conditions</subject><subject>Oxidation-Reduction</subject><subject>Oxidoreductions</subject><subject>Salinity</subject><subject>Salinity effects</subject><subject>Sediment</subject><subject>Sediments</subject><subject>Suaeda heteroptera</subject><subject>Sulfate reduction</subject><subject>Sulfate-reducing bacteria</subject><subject>Sulphate reduction</subject><subject>Surface layers</subject><subject>Water Pollutants, Chemical - analysis</subject><subject>Water Pollutants, Chemical - chemistry</subject><subject>Wetland sediments</subject><subject>Wetlands</subject><issn>0025-326X</issn><issn>1879-3363</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkc1uEzEQgC0EomnhFcASFw7N4r94d49VBBQpKoeCxM3y2mPiaNcOtrclr8ET11FKD1y4zBzmmx_Nh9BbShpKqPywayad9nEc5rFhhPYN4Q2R8hla0K7tl5xL_hwtCGGrJWfyxxk6z3lHCGlZS1-iM04ZZ5yvFujPrR598OWAdbA4gY2_sYnB-uJjyFg7B6bgsgU8QdkexpqSmdMBu5gmfYSwDziD9ROEgqPDt7MGq_EWCqS4r0HjeyhjHZ-P5Y3XMfjwE-9TvPPBwCW-iaku0Lng9dYH_Qq9cHrM8PoxX6Dvnz5-W18vN18_f1lfbZaG932pcaC0FZ1wnWxd76ju-p4K23VUdKQXmrQGZC8Y5QYGYjUIZwcBmg6yA275BXp_mlsv-TVDLmry2cBYT4U4Z8WYkExQ1q4q-u4fdBfnFOp1lZKEdJQTWan2RJkUc07g1D756umgKFFHbWqnnrSpozZFuKraauebx_nzMIF96vvrqQJXJwDqQ-48JJWNh_o961MVpGz0_13yANqzsCM</recordid><startdate>201905</startdate><enddate>201905</enddate><creator>Li, Hang</creator><creator>Zheng, Dongmei</creator><creator>Yang, Jisong</creator><creator>Wu, Chenghao</creator><creator>Zhang, Shiwei</creator><creator>Li, Huiying</creator><creator>Ma, Huanchi</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7T7</scope><scope>7TN</scope><scope>7TV</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>M7N</scope><scope>P64</scope><scope>SOI</scope><scope>7X8</scope></search><sort><creationdate>201905</creationdate><title>Salinity and redox conditions affect the methyl mercury formation in sediment of Suaeda heteroptera wetlands of Liaoning province, Northeast China</title><author>Li, Hang ; Zheng, Dongmei ; Yang, Jisong ; Wu, Chenghao ; Zhang, Shiwei ; Li, Huiying ; Ma, Huanchi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c399t-c3b117484f867f9f1a89914d88148094a07ce694213ceb0dae4fdb4ea1b68e3d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Aerobic conditions</topic><topic>Anaerobic conditions</topic><topic>Animals</topic><topic>Anoxic conditions</topic><topic>Bacteria</topic><topic>Bottom sediments</topic><topic>Chenopodiaceae</topic><topic>China</topic><topic>Deionization</topic><topic>Dimethylmercury</topic><topic>Environmental Monitoring</topic><topic>Environmental risk</topic><topic>Estuaries</topic><topic>Estuarine dynamics</topic><topic>Estuarine environments</topic><topic>Flooding</topic><topic>Floods</topic><topic>Geologic Sediments - chemistry</topic><topic>Geologic Sediments - microbiology</topic><topic>Mercury</topic><topic>Mercury (metal)</topic><topic>Methyl mercury</topic><topic>Methylmercury</topic><topic>Methylmercury Compounds - analysis</topic><topic>Methylmercury Compounds - chemistry</topic><topic>Oxic conditions</topic><topic>Oxidation-Reduction</topic><topic>Oxidoreductions</topic><topic>Salinity</topic><topic>Salinity effects</topic><topic>Sediment</topic><topic>Sediments</topic><topic>Suaeda heteroptera</topic><topic>Sulfate reduction</topic><topic>Sulfate-reducing bacteria</topic><topic>Sulphate reduction</topic><topic>Surface layers</topic><topic>Water Pollutants, Chemical - analysis</topic><topic>Water Pollutants, Chemical - chemistry</topic><topic>Wetland sediments</topic><topic>Wetlands</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Hang</creatorcontrib><creatorcontrib>Zheng, Dongmei</creatorcontrib><creatorcontrib>Yang, Jisong</creatorcontrib><creatorcontrib>Wu, Chenghao</creatorcontrib><creatorcontrib>Zhang, Shiwei</creatorcontrib><creatorcontrib>Li, Huiying</creatorcontrib><creatorcontrib>Ma, Huanchi</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Oceanic Abstracts</collection><collection>Pollution Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Marine pollution bulletin</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Hang</au><au>Zheng, Dongmei</au><au>Yang, Jisong</au><au>Wu, Chenghao</au><au>Zhang, Shiwei</au><au>Li, Huiying</au><au>Ma, Huanchi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Salinity and redox conditions affect the methyl mercury formation in sediment of Suaeda heteroptera wetlands of Liaoning province, Northeast China</atitle><jtitle>Marine pollution bulletin</jtitle><addtitle>Mar Pollut Bull</addtitle><date>2019-05</date><risdate>2019</risdate><volume>142</volume><spage>537</spage><epage>543</epage><pages>537-543</pages><issn>0025-326X</issn><eissn>1879-3363</eissn><abstract>Using a laboratory simulation experiment, we studied the trend of change in methylmercury (MeHg) content of sediments in response to the changing salinity of flooding water (deionized water, 0.5%, 1.0%, 1.5%, and 2.0%) and sulfate-reducing bacteria (SRB) content for both the surface layer (0–10 cm) and the bottom layer (10–20 cm) of Suaeda heteroptera wetland sediments in the Liaohe estuary under anaerobic and aerobic conditions, respectively. The results showed that under AAC (anaerobic conditions), the MeHg content in the surface and bottom sediment layers increased first and then decreased over time and was highest at the 14th day. In contrast, under AC (aerobic conditions), the MeHg content in sediments of both layers increased slowly with increasing test time. The MeHg content in sediments increased first and then decreased with rising salinity and was highest at a salinity of 1.0%. Among the samples collected at different experimental stages, the SRB content in the sediments showed a decreasing trend with rising flooding salinity under AAC and AC. The MeHg and SRB contents were higher under anaerobic conditions than under aerobic conditions. Linear fitting results showed that there was no linear correlation between MeHg contents and SRB quantities in surface and bottom sediments under AAC and AC (R2 < 0.1). Collectively, these results suggest an important role for flooding salinity and anaerobic-aerobic conditions in the production of MeHg in S. heteroptera wetlands of the Liaohe estuary, and may predict the ecological risk of methylmercury according to the change of salinity.
•MeHg in sediments response to the change of salinity (CK, 0.5%, 1.0%, 1.5%, and 2.0%) of water was studied.•The highest MeHg occurred at 1.0% salinity of water and MeHg in all sediment increased substantially.•MeHg in sediment increased in less extent in the aerobic conditions compared to the anaerobic conditions.•Other bacteria apart from SRB might be responsible for the MeHg change in such estuary environment.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>31232335</pmid><doi>10.1016/j.marpolbul.2019.03.066</doi><tpages>7</tpages></addata></record> |
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| subjects | Aerobic conditions Anaerobic conditions Animals Anoxic conditions Bacteria Bottom sediments Chenopodiaceae China Deionization Dimethylmercury Environmental Monitoring Environmental risk Estuaries Estuarine dynamics Estuarine environments Flooding Floods Geologic Sediments - chemistry Geologic Sediments - microbiology Mercury Mercury (metal) Methyl mercury Methylmercury Methylmercury Compounds - analysis Methylmercury Compounds - chemistry Oxic conditions Oxidation-Reduction Oxidoreductions Salinity Salinity effects Sediment Sediments Suaeda heteroptera Sulfate reduction Sulfate-reducing bacteria Sulphate reduction Surface layers Water Pollutants, Chemical - analysis Water Pollutants, Chemical - chemistry Wetland sediments Wetlands |
| title | Salinity and redox conditions affect the methyl mercury formation in sediment of Suaeda heteroptera wetlands of Liaoning province, Northeast China |
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