Assessment of trace metals contamination level, bioavailability and toxicity in sediments from Dakar coast and Saint Louis estuary in Senegal, West Africa
•Trace metals were analysed in sediment from African coast and estuary.•Geochemical normalisation performed to evaluate anthropogenic influences on the sediments.•Strong pollution and potential toxicity which may constitute a risk to populations’ health.•Concentrations of trace metals were above thr...
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| Veröffentlicht in: | Chemosphere (Oxford) 2015-11, Vol.138, p.980-987 |
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| creator | Diop, Cheikh Dewaelé, Dorothée Cazier, Fabrice Diouf, Amadou Ouddane, Baghdad |
| description | •Trace metals were analysed in sediment from African coast and estuary.•Geochemical normalisation performed to evaluate anthropogenic influences on the sediments.•Strong pollution and potential toxicity which may constitute a risk to populations’ health.•Concentrations of trace metals were above threshold limit of the sediment quality guidelines.
Trace metals have the potential to associate with sediments that have been recognised as significant source of contamination for the benthic environment. The current study aims assessing the trace metals contamination level in sediments from Dakar coast and Saint Louis estuary, and to examine their bioavailability to predict potential toxicity of sediments. Surface sediment samples were collected between June 2012 and January 2013 in three sampling periods from eight stations. Trace metals were analysed using inductively coupled plasma-optical emission spectrometer. Geoaccumulation indexes (Igeo) showed strong pollution by Cd, Cr, Cu and Pb confirmed by enrichment factor (EF) suggesting that these metals derived from anthropogenic sources. Toxicity indexes exceeded one in several sites suggesting the potential effects on sediment-dwelling organisms, which may constitute a risk to populations’ health. However, seasonal variability of metal bioavailability was noted, revealing the best period to monitor metal contamination. From an ecotoxicological point of view, concentrations of Cd, Cr, Cu and Pb were above the effects range low threshold limit of the sediment quality guidelines for adverse biological effects. In addition, with Pb concentrations above the effect range medium values in some sites, biological effects may occur. |
| doi_str_mv | 10.1016/j.chemosphere.2014.12.041 |
| format | Article |
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Trace metals have the potential to associate with sediments that have been recognised as significant source of contamination for the benthic environment. The current study aims assessing the trace metals contamination level in sediments from Dakar coast and Saint Louis estuary, and to examine their bioavailability to predict potential toxicity of sediments. Surface sediment samples were collected between June 2012 and January 2013 in three sampling periods from eight stations. Trace metals were analysed using inductively coupled plasma-optical emission spectrometer. Geoaccumulation indexes (Igeo) showed strong pollution by Cd, Cr, Cu and Pb confirmed by enrichment factor (EF) suggesting that these metals derived from anthropogenic sources. Toxicity indexes exceeded one in several sites suggesting the potential effects on sediment-dwelling organisms, which may constitute a risk to populations’ health. However, seasonal variability of metal bioavailability was noted, revealing the best period to monitor metal contamination. From an ecotoxicological point of view, concentrations of Cd, Cr, Cu and Pb were above the effects range low threshold limit of the sediment quality guidelines for adverse biological effects. In addition, with Pb concentrations above the effect range medium values in some sites, biological effects may occur.</description><identifier>ISSN: 0045-6535</identifier><identifier>EISSN: 1879-1298</identifier><identifier>DOI: 10.1016/j.chemosphere.2014.12.041</identifier><identifier>PMID: 25592460</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Analytical chemistry ; Aquatic Organisms - drug effects ; Bioavailability ; Biological Availability ; Brackish ; Chemical Sciences ; Chromium ; Coast ; Contamination ; Continental interfaces, environment ; Earth Sciences ; Ecosystem ; Ecotoxicology ; Environmental Monitoring ; Estuaries ; Estuary ; Geochemistry ; Geologic Sediments - analysis ; Lead (metal) ; Metal pollution ; Metals, Heavy - analysis ; Metals, Heavy - toxicity ; Models, Theoretical ; Pollution sources ; Sciences of the Universe ; Seasons ; Sediment ; Sediments ; Senegal ; Spatial Analysis ; Toxicity ; Trace Elements - analysis ; Trace Elements - toxicity ; Trace metals ; Water Pollutants, Chemical - analysis ; Water Pollutants, Chemical - toxicity</subject><ispartof>Chemosphere (Oxford), 2015-11, Vol.138, p.980-987</ispartof><rights>2014 Elsevier Ltd</rights><rights>Copyright © 2014 Elsevier Ltd. All rights reserved.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c547t-4daafd25805d6e10317268ae04c861ef50c55c762c3f7fe8660d8b8c9ebf29b83</citedby><cites>FETCH-LOGICAL-c547t-4daafd25805d6e10317268ae04c861ef50c55c762c3f7fe8660d8b8c9ebf29b83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0045653514014696$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,776,780,881,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25592460$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-01206542$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Diop, Cheikh</creatorcontrib><creatorcontrib>Dewaelé, Dorothée</creatorcontrib><creatorcontrib>Cazier, Fabrice</creatorcontrib><creatorcontrib>Diouf, Amadou</creatorcontrib><creatorcontrib>Ouddane, Baghdad</creatorcontrib><title>Assessment of trace metals contamination level, bioavailability and toxicity in sediments from Dakar coast and Saint Louis estuary in Senegal, West Africa</title><title>Chemosphere (Oxford)</title><addtitle>Chemosphere</addtitle><description>•Trace metals were analysed in sediment from African coast and estuary.•Geochemical normalisation performed to evaluate anthropogenic influences on the sediments.•Strong pollution and potential toxicity which may constitute a risk to populations’ health.•Concentrations of trace metals were above threshold limit of the sediment quality guidelines.
Trace metals have the potential to associate with sediments that have been recognised as significant source of contamination for the benthic environment. The current study aims assessing the trace metals contamination level in sediments from Dakar coast and Saint Louis estuary, and to examine their bioavailability to predict potential toxicity of sediments. Surface sediment samples were collected between June 2012 and January 2013 in three sampling periods from eight stations. Trace metals were analysed using inductively coupled plasma-optical emission spectrometer. Geoaccumulation indexes (Igeo) showed strong pollution by Cd, Cr, Cu and Pb confirmed by enrichment factor (EF) suggesting that these metals derived from anthropogenic sources. Toxicity indexes exceeded one in several sites suggesting the potential effects on sediment-dwelling organisms, which may constitute a risk to populations’ health. However, seasonal variability of metal bioavailability was noted, revealing the best period to monitor metal contamination. From an ecotoxicological point of view, concentrations of Cd, Cr, Cu and Pb were above the effects range low threshold limit of the sediment quality guidelines for adverse biological effects. In addition, with Pb concentrations above the effect range medium values in some sites, biological effects may occur.</description><subject>Analytical chemistry</subject><subject>Aquatic Organisms - drug effects</subject><subject>Bioavailability</subject><subject>Biological Availability</subject><subject>Brackish</subject><subject>Chemical Sciences</subject><subject>Chromium</subject><subject>Coast</subject><subject>Contamination</subject><subject>Continental interfaces, environment</subject><subject>Earth Sciences</subject><subject>Ecosystem</subject><subject>Ecotoxicology</subject><subject>Environmental Monitoring</subject><subject>Estuaries</subject><subject>Estuary</subject><subject>Geochemistry</subject><subject>Geologic Sediments - analysis</subject><subject>Lead (metal)</subject><subject>Metal pollution</subject><subject>Metals, Heavy - analysis</subject><subject>Metals, Heavy - toxicity</subject><subject>Models, Theoretical</subject><subject>Pollution sources</subject><subject>Sciences of the Universe</subject><subject>Seasons</subject><subject>Sediment</subject><subject>Sediments</subject><subject>Senegal</subject><subject>Spatial Analysis</subject><subject>Toxicity</subject><subject>Trace Elements - analysis</subject><subject>Trace Elements - toxicity</subject><subject>Trace metals</subject><subject>Water Pollutants, Chemical - analysis</subject><subject>Water Pollutants, Chemical - toxicity</subject><issn>0045-6535</issn><issn>1879-1298</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkUGP0zAQhS0EYsvCX0DmBhIJths7zrHqAotUicOCOFoTZ0JdkrjYTgV_hV-Ls11WHPdkefS9N0_zCHnFWckZV-8Opd3j6ONxjwFLwXhVclGyij8iK67rpuCi0Y_JirFKFkqu5QV5FuOBsSyWzVNyIaRsRKXYivzZxIgxjjgl6nuaAlikIyYYIrV-SjC6CZLzEx3whMNb2joPJ3ADtG5w6TeFqaPJ_3J2-biJRuzc4hZpH_xIr-AHhOwEMd2iN-Dypp2fXaQY0wzhVnWDE36HbP8tD-mmD87Cc_KkzzHwxd17Sb5-eP9le13sPn_8tN3sCiurOhVVB9B3QmomO4WcrXktlAZkldWKYy-ZldLWSth1X_eolWKdbrVtsO1F0-r1JXlz9t3DYI7BjTmT8eDM9WZnlhnjgilZiRPP7Oszewz-55yzmtFFi8MAE_o5Gl7Xmqk6X_cBaKV0I2tWZbQ5ozb4GAP29zE4M0vj5mD-a9wsjRsuTG48a1_erZnbEbt75b-KM7A9A5hveHIYTLQOJ5t7CmiT6bx7wJq_-WfEgw</recordid><startdate>20151101</startdate><enddate>20151101</enddate><creator>Diop, Cheikh</creator><creator>Dewaelé, Dorothée</creator><creator>Cazier, Fabrice</creator><creator>Diouf, Amadou</creator><creator>Ouddane, Baghdad</creator><general>Elsevier Ltd</general><general>Elsevier</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>7TG</scope><scope>7TN</scope><scope>7TV</scope><scope>7U7</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>KL.</scope><scope>L.G</scope><scope>SOI</scope><scope>7SU</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>1XC</scope></search><sort><creationdate>20151101</creationdate><title>Assessment of trace metals contamination level, bioavailability and toxicity in sediments from Dakar coast and Saint Louis estuary in Senegal, West Africa</title><author>Diop, Cheikh ; Dewaelé, Dorothée ; Cazier, Fabrice ; Diouf, Amadou ; Ouddane, Baghdad</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c547t-4daafd25805d6e10317268ae04c861ef50c55c762c3f7fe8660d8b8c9ebf29b83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Analytical chemistry</topic><topic>Aquatic Organisms - drug effects</topic><topic>Bioavailability</topic><topic>Biological Availability</topic><topic>Brackish</topic><topic>Chemical Sciences</topic><topic>Chromium</topic><topic>Coast</topic><topic>Contamination</topic><topic>Continental interfaces, environment</topic><topic>Earth Sciences</topic><topic>Ecosystem</topic><topic>Ecotoxicology</topic><topic>Environmental Monitoring</topic><topic>Estuaries</topic><topic>Estuary</topic><topic>Geochemistry</topic><topic>Geologic Sediments - analysis</topic><topic>Lead (metal)</topic><topic>Metal pollution</topic><topic>Metals, Heavy - analysis</topic><topic>Metals, Heavy - toxicity</topic><topic>Models, Theoretical</topic><topic>Pollution sources</topic><topic>Sciences of the Universe</topic><topic>Seasons</topic><topic>Sediment</topic><topic>Sediments</topic><topic>Senegal</topic><topic>Spatial Analysis</topic><topic>Toxicity</topic><topic>Trace Elements - analysis</topic><topic>Trace Elements - toxicity</topic><topic>Trace metals</topic><topic>Water Pollutants, Chemical - analysis</topic><topic>Water Pollutants, Chemical - toxicity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Diop, Cheikh</creatorcontrib><creatorcontrib>Dewaelé, Dorothée</creatorcontrib><creatorcontrib>Cazier, Fabrice</creatorcontrib><creatorcontrib>Diouf, Amadou</creatorcontrib><creatorcontrib>Ouddane, Baghdad</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>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Pollution Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><collection>Environmental Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Chemosphere (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Diop, Cheikh</au><au>Dewaelé, Dorothée</au><au>Cazier, Fabrice</au><au>Diouf, Amadou</au><au>Ouddane, Baghdad</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Assessment of trace metals contamination level, bioavailability and toxicity in sediments from Dakar coast and Saint Louis estuary in Senegal, West Africa</atitle><jtitle>Chemosphere (Oxford)</jtitle><addtitle>Chemosphere</addtitle><date>2015-11-01</date><risdate>2015</risdate><volume>138</volume><spage>980</spage><epage>987</epage><pages>980-987</pages><issn>0045-6535</issn><eissn>1879-1298</eissn><abstract>•Trace metals were analysed in sediment from African coast and estuary.•Geochemical normalisation performed to evaluate anthropogenic influences on the sediments.•Strong pollution and potential toxicity which may constitute a risk to populations’ health.•Concentrations of trace metals were above threshold limit of the sediment quality guidelines.
Trace metals have the potential to associate with sediments that have been recognised as significant source of contamination for the benthic environment. The current study aims assessing the trace metals contamination level in sediments from Dakar coast and Saint Louis estuary, and to examine their bioavailability to predict potential toxicity of sediments. Surface sediment samples were collected between June 2012 and January 2013 in three sampling periods from eight stations. Trace metals were analysed using inductively coupled plasma-optical emission spectrometer. Geoaccumulation indexes (Igeo) showed strong pollution by Cd, Cr, Cu and Pb confirmed by enrichment factor (EF) suggesting that these metals derived from anthropogenic sources. Toxicity indexes exceeded one in several sites suggesting the potential effects on sediment-dwelling organisms, which may constitute a risk to populations’ health. However, seasonal variability of metal bioavailability was noted, revealing the best period to monitor metal contamination. From an ecotoxicological point of view, concentrations of Cd, Cr, Cu and Pb were above the effects range low threshold limit of the sediment quality guidelines for adverse biological effects. In addition, with Pb concentrations above the effect range medium values in some sites, biological effects may occur.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>25592460</pmid><doi>10.1016/j.chemosphere.2014.12.041</doi><tpages>8</tpages></addata></record> |
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| ispartof | Chemosphere (Oxford), 2015-11, Vol.138, p.980-987 |
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| subjects | Analytical chemistry Aquatic Organisms - drug effects Bioavailability Biological Availability Brackish Chemical Sciences Chromium Coast Contamination Continental interfaces, environment Earth Sciences Ecosystem Ecotoxicology Environmental Monitoring Estuaries Estuary Geochemistry Geologic Sediments - analysis Lead (metal) Metal pollution Metals, Heavy - analysis Metals, Heavy - toxicity Models, Theoretical Pollution sources Sciences of the Universe Seasons Sediment Sediments Senegal Spatial Analysis Toxicity Trace Elements - analysis Trace Elements - toxicity Trace metals Water Pollutants, Chemical - analysis Water Pollutants, Chemical - toxicity |
| title | Assessment of trace metals contamination level, bioavailability and toxicity in sediments from Dakar coast and Saint Louis estuary in Senegal, West Africa |
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