Mercury in sediment cores from the southern Gulf of Mexico: Preindustrial levels and temporal enrichment trends
Spatial and temporal variability of mercury concentrations in sediments was evaluated in 210Pb-dated sediment cores from offshore and intertidal areas in the southern Gulf of Mexico. In offshore cores, mercury concentrations were comparable (11.2–69.2 ng g−1), and intermediate between concentrations...
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| Veröffentlicht in: | Marine pollution bulletin 2019-12, Vol.149, p.110498-110498, Article 110498 |
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| creator | Ruiz-Fernández, A.C. Rangel-García, M. Pérez-Bernal, L.H. López-Mendoza, P.G. Gracia, A. Schwing, P. Hollander, D. Páez-Osuna, F. Cardoso-Mohedano, J.G. Cuellar-Martinez, T. Sanchez-Cabeza, J.A. |
| description | Spatial and temporal variability of mercury concentrations in sediments was evaluated in 210Pb-dated sediment cores from offshore and intertidal areas in the southern Gulf of Mexico. In offshore cores, mercury concentrations were comparable (11.2–69.2 ng g−1), and intermediate between concentrations in intertidal cores from the eastern (6.0–34.4 ng g−1) and the western (34.9–137.7 ng g−1) inlets of Términos Lagoon. The enrichment factor (EF) indicated minimal contamination (EF |
| doi_str_mv | 10.1016/j.marpolbul.2019.110498 |
| format | Article |
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[Display omitted]
•Hg contamination trends were studied in sediment cores of southern Gulf of Mexico.•Null to minor Hg enrichment was observed during the past 100 years in the area.•Recent Hg concentrations in most offshore cores were close to preindustrial levels.•Minor Hg contamination in intertidal areas is likely associated to surface runoff.•Hg concentrations are not a risk to benthic biota in the region.</description><identifier>ISSN: 0025-326X</identifier><identifier>EISSN: 1879-3363</identifier><identifier>DOI: 10.1016/j.marpolbul.2019.110498</identifier><identifier>PMID: 31430665</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Catchment area ; Coastal zone ; Coastal zones ; Contamination ; Cores ; Enrichment ; Environmental Monitoring - methods ; Erosion ; Erosion control ; Fluxes ; Geologic Sediments - chemistry ; Gulf of Mexico ; Gulf of Mexico large marine ecosystem ; Inlets ; Inlets (topography) ; Inlets (waterways) ; Intertidal zone ; Lagoons ; Land use change ; Lead isotopes ; Mercury ; Mercury (metal) ; Mercury - analysis ; Mercury enrichment and fluxes ; Offshore ; Oil and gas industry ; Oil industry ; Oil pollution ; Runoff ; Sediment ; Sediments ; Sewage ; Soil ; Soil - chemistry ; Soil contamination ; Soil erosion ; Soil water ; Spatio-Temporal Analysis ; Temporal variations ; Wastewater ; Water Pollutants, Chemical - analysis</subject><ispartof>Marine pollution bulletin, 2019-12, Vol.149, p.110498-110498, Article 110498</ispartof><rights>2019 Elsevier Ltd</rights><rights>Copyright © 2019 Elsevier Ltd. All rights reserved.</rights><rights>Copyright Elsevier BV Dec 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a422t-8fabba063aa66c1269e45cb696cfd232ed5b344ca7f192dfad610f18fe16c6e03</citedby><cites>FETCH-LOGICAL-a422t-8fabba063aa66c1269e45cb696cfd232ed5b344ca7f192dfad610f18fe16c6e03</cites><orcidid>0000-0002-2515-1249 ; 0000-0001-8466-4952 ; 0000-0002-3540-1168</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0025326X19306368$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31430665$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ruiz-Fernández, A.C.</creatorcontrib><creatorcontrib>Rangel-García, M.</creatorcontrib><creatorcontrib>Pérez-Bernal, L.H.</creatorcontrib><creatorcontrib>López-Mendoza, P.G.</creatorcontrib><creatorcontrib>Gracia, A.</creatorcontrib><creatorcontrib>Schwing, P.</creatorcontrib><creatorcontrib>Hollander, D.</creatorcontrib><creatorcontrib>Páez-Osuna, F.</creatorcontrib><creatorcontrib>Cardoso-Mohedano, J.G.</creatorcontrib><creatorcontrib>Cuellar-Martinez, T.</creatorcontrib><creatorcontrib>Sanchez-Cabeza, J.A.</creatorcontrib><title>Mercury in sediment cores from the southern Gulf of Mexico: Preindustrial levels and temporal enrichment trends</title><title>Marine pollution bulletin</title><addtitle>Mar Pollut Bull</addtitle><description>Spatial and temporal variability of mercury concentrations in sediments was evaluated in 210Pb-dated sediment cores from offshore and intertidal areas in the southern Gulf of Mexico. In offshore cores, mercury concentrations were comparable (11.2–69.2 ng g−1), and intermediate between concentrations in intertidal cores from the eastern (6.0–34.4 ng g−1) and the western (34.9–137.7 ng g−1) inlets of Términos Lagoon. The enrichment factor (EF) indicated minimal contamination (EF < 2) in most offshore cores, whereas in some intertidal cores steadily increasing mercury enrichment and fluxes were observed along the past century. No evidence of oil industry related mercury contamination was found, as the minor but increasing enrichment in intertidal cores is most likely related to land-derived sources such as catchment eroded soils and waste water runoff. Results highlight the importance to control catchment erosion and untreated sewage releases to reduce mercury loadings to the coastal zone.
[Display omitted]
•Hg contamination trends were studied in sediment cores of southern Gulf of Mexico.•Null to minor Hg enrichment was observed during the past 100 years in the area.•Recent Hg concentrations in most offshore cores were close to preindustrial levels.•Minor Hg contamination in intertidal areas is likely associated to surface runoff.•Hg concentrations are not a risk to benthic biota in the region.</description><subject>Catchment area</subject><subject>Coastal zone</subject><subject>Coastal zones</subject><subject>Contamination</subject><subject>Cores</subject><subject>Enrichment</subject><subject>Environmental Monitoring - methods</subject><subject>Erosion</subject><subject>Erosion control</subject><subject>Fluxes</subject><subject>Geologic Sediments - chemistry</subject><subject>Gulf of Mexico</subject><subject>Gulf of Mexico large marine ecosystem</subject><subject>Inlets</subject><subject>Inlets (topography)</subject><subject>Inlets (waterways)</subject><subject>Intertidal zone</subject><subject>Lagoons</subject><subject>Land use change</subject><subject>Lead isotopes</subject><subject>Mercury</subject><subject>Mercury (metal)</subject><subject>Mercury - analysis</subject><subject>Mercury enrichment and fluxes</subject><subject>Offshore</subject><subject>Oil and gas industry</subject><subject>Oil industry</subject><subject>Oil pollution</subject><subject>Runoff</subject><subject>Sediment</subject><subject>Sediments</subject><subject>Sewage</subject><subject>Soil</subject><subject>Soil - chemistry</subject><subject>Soil contamination</subject><subject>Soil erosion</subject><subject>Soil water</subject><subject>Spatio-Temporal Analysis</subject><subject>Temporal variations</subject><subject>Wastewater</subject><subject>Water Pollutants, Chemical - analysis</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>eNqFkU1v1DAQhi0EokvhL4AlLlyy-CNxEm5VVVqkVnAAiZvl2GPVq8RexnHV_nu8bOmBC6eRRs-8M5qHkHecbTnj6uNuuxjcp3kq81YwPm45Z-04PCMbPvRjI6WSz8mGMdE1UqifJ-RVzjvGWC96_pKcSN5KplS3IekG0BZ8oCHSDC4sEFdqE0KmHtNC11ugOZVaMNLLMnuaPL2B-2DTJ_oNIURX8orBzHSGO5gzNdHRFZZ9wtqDiMHe_gldEaLLr8kLb-YMbx7rKfnx-eL7-VVz_fXyy_nZdWNaIdZm8GaaDFPSGKUsF2qEtrOTGpX1TkgBrptk21rTez4K541TnHk-eODKKmDylHw45u4x_SqQV72EbGGeTYRUshZiYJ3sJDug7_9Bd6lgrNfpuqmXgqlBVKo_UhZTzghe7zFUCQ-aM31wonf6yYk-ONFHJ3Xy7WN-mRZwT3N_JVTg7AjU98FdANTZBoi26kCwq3Yp_HfJb-GAo3Y</recordid><startdate>201912</startdate><enddate>201912</enddate><creator>Ruiz-Fernández, A.C.</creator><creator>Rangel-García, M.</creator><creator>Pérez-Bernal, L.H.</creator><creator>López-Mendoza, P.G.</creator><creator>Gracia, A.</creator><creator>Schwing, P.</creator><creator>Hollander, D.</creator><creator>Páez-Osuna, F.</creator><creator>Cardoso-Mohedano, J.G.</creator><creator>Cuellar-Martinez, T.</creator><creator>Sanchez-Cabeza, J.A.</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><orcidid>https://orcid.org/0000-0002-2515-1249</orcidid><orcidid>https://orcid.org/0000-0001-8466-4952</orcidid><orcidid>https://orcid.org/0000-0002-3540-1168</orcidid></search><sort><creationdate>201912</creationdate><title>Mercury in sediment cores from the southern Gulf of Mexico: Preindustrial levels and temporal enrichment trends</title><author>Ruiz-Fernández, A.C. ; 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In offshore cores, mercury concentrations were comparable (11.2–69.2 ng g−1), and intermediate between concentrations in intertidal cores from the eastern (6.0–34.4 ng g−1) and the western (34.9–137.7 ng g−1) inlets of Términos Lagoon. The enrichment factor (EF) indicated minimal contamination (EF < 2) in most offshore cores, whereas in some intertidal cores steadily increasing mercury enrichment and fluxes were observed along the past century. No evidence of oil industry related mercury contamination was found, as the minor but increasing enrichment in intertidal cores is most likely related to land-derived sources such as catchment eroded soils and waste water runoff. Results highlight the importance to control catchment erosion and untreated sewage releases to reduce mercury loadings to the coastal zone.
[Display omitted]
•Hg contamination trends were studied in sediment cores of southern Gulf of Mexico.•Null to minor Hg enrichment was observed during the past 100 years in the area.•Recent Hg concentrations in most offshore cores were close to preindustrial levels.•Minor Hg contamination in intertidal areas is likely associated to surface runoff.•Hg concentrations are not a risk to benthic biota in the region.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>31430665</pmid><doi>10.1016/j.marpolbul.2019.110498</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0002-2515-1249</orcidid><orcidid>https://orcid.org/0000-0001-8466-4952</orcidid><orcidid>https://orcid.org/0000-0002-3540-1168</orcidid></addata></record> |
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| subjects | Catchment area Coastal zone Coastal zones Contamination Cores Enrichment Environmental Monitoring - methods Erosion Erosion control Fluxes Geologic Sediments - chemistry Gulf of Mexico Gulf of Mexico large marine ecosystem Inlets Inlets (topography) Inlets (waterways) Intertidal zone Lagoons Land use change Lead isotopes Mercury Mercury (metal) Mercury - analysis Mercury enrichment and fluxes Offshore Oil and gas industry Oil industry Oil pollution Runoff Sediment Sediments Sewage Soil Soil - chemistry Soil contamination Soil erosion Soil water Spatio-Temporal Analysis Temporal variations Wastewater Water Pollutants, Chemical - analysis |
| title | Mercury in sediment cores from the southern Gulf of Mexico: Preindustrial levels and temporal enrichment trends |
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