Using an Integrated Approach to Assess the Sediment Quality of an Mediterranean Lagoon, the Bizerte Lagoon (Tunisia).
Identifieur interne : 000010 ( Main/Exploration ); précédent : 000009; suivant : 000011Using an Integrated Approach to Assess the Sediment Quality of an Mediterranean Lagoon, the Bizerte Lagoon (Tunisia).
Auteurs : Badreddine Barhoumi [Tunisie] ; Anis Elbarhoumi [Tunisie] ; Christelle Clérandeau [France] ; Abdulla M. Al-Rawabdeh [Canada] ; Atef Atyaoui [Tunisie] ; Soufiane Touil [Tunisie] ; Mohamed Ridha Driss [Tunisie] ; Jérôme Cachot [France]Source :
- Ecotoxicology (London, England) [ 1573-3017 ] ; 2016.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Metals, Heavy, Polychlorinated Biphenyls, Polycyclic Aromatic Hydrocarbons, Water Pollutants, Chemical.
- chemistry : Geologic Sediments, Seawater.
- methods : Environmental Monitoring.
- Tunisia.
Abstract
The present study investigates the quality of surface sediments from the Bizerte lagoon (North Tunisia) using an integrated approach including chemical contaminant analysis, bioassays and sediment quality guidelines (SQGs). Sediment samples were collected at 9 sites and analyzed for eight heavy metals (Hg, Cd, Cr, Cu, Pb, Zn, Ni, Fe and Mn). PAHs, PCBs, OCPs were measured previously in the same sediment samples. Our results indicated that the highest concentrations of metals were found near urban areas due to the municipial and industrial wastewater discharges. Sediment pollution assessment was carried out using geoaccumulation index and enrichment factor, which indicate a widespread pollution by Cd, Pb, Ni and Zn in the studied sediments. For bioassays, aqueous and organic extracts were used to assess toxicity and genotoxicity in sediments by using Microtox(®) and SOS Chromotest, respectively. Toxicity levels were compared to metallic and organic pollutants contents. Our results highlight differences in the pattern of responses between the different assays and show no correlation with all the studied contaminants, emphasizing the influence of other contaminants not analyzed in the present study. Based on SQGs, the results of toxicity assessment indicated that adverse effects caused by Ni and Zn would be expected frequently. Nickel was found to have the highest predicted acute toxicity, followed by Zn, Pb, Cd, Cu and Cr. There was no significant relationship between sediment toxicity calculated from heavy metal concentrations (SQG approach) and those measured with bioassays. These findings support the use of integrated approachs for evaluating the environmental risks of sediments.
DOI: 10.1007/s10646-016-1664-4
PubMed: 27146821
Affiliations:
- Canada, France, Tunisie
- Alberta, Aquitaine, Gouvernorat de Tunis, Nouvelle-Aquitaine
- Calgary, Talence, Tunis
- Université de Calgary
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Al-Rawabdeh</name><affiliation wicri:level="4"><nlm:affiliation>Department of Geomatics Engineering, University of Calgary, Calgary, AB, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Geomatics Engineering, University of Calgary, Calgary, AB</wicri:regionArea><orgName type="university">Université de Calgary</orgName><placeName><settlement type="city">Calgary</settlement><region type="state">Alberta</region></placeName></affiliation></author><author><name sortKey="Atyaoui, Atef" sort="Atyaoui, Atef" uniqKey="Atyaoui A" first="Atef" last="Atyaoui">Atef Atyaoui</name><affiliation wicri:level="3"><nlm:affiliation>Office National des Mines, Siège social de l'ONM 24, rue de L'Energie, 2035 La Charguia - Tunis, 1080, Tunis, Tunisia.</nlm:affiliation><country xml:lang="fr">Tunisie</country><wicri:regionArea>Office National des Mines, Siège social de l'ONM 24, rue de L'Energie, 2035 La Charguia - Tunis, 1080, Tunis</wicri:regionArea><placeName><settlement type="city">Tunis</settlement><region nuts="2">Gouvernorat de Tunis</region></placeName></affiliation></author><author><name sortKey="Touil, Soufiane" sort="Touil, Soufiane" uniqKey="Touil S" first="Soufiane" last="Touil">Soufiane Touil</name><affiliation wicri:level="1"><nlm:affiliation>Department of Chemistry Faculty of Sciences of Bizerte, Laboratory of Heteroatom Organic Chemistry, University of Carthage, 7021, Jarzouna, Tunisia.</nlm:affiliation><country xml:lang="fr">Tunisie</country><wicri:regionArea>Department of Chemistry Faculty of Sciences of Bizerte, Laboratory of Heteroatom Organic Chemistry, University of Carthage, 7021, Jarzouna</wicri:regionArea><wicri:noRegion>Jarzouna</wicri:noRegion></affiliation></author><author><name sortKey="Driss, Mohamed Ridha" sort="Driss, Mohamed Ridha" uniqKey="Driss M" first="Mohamed Ridha" last="Driss">Mohamed Ridha Driss</name><affiliation wicri:level="1"><nlm:affiliation>Department of Chemistry Faculty of Sciences of Bizerte, Laboratory of Heteroatom Organic Chemistry, University of Carthage, 7021, Jarzouna, Tunisia.</nlm:affiliation><country xml:lang="fr">Tunisie</country><wicri:regionArea>Department of Chemistry Faculty of Sciences of Bizerte, Laboratory of Heteroatom Organic Chemistry, University of Carthage, 7021, Jarzouna</wicri:regionArea><wicri:noRegion>Jarzouna</wicri:noRegion></affiliation></author><author><name sortKey="Cachot, Jerome" sort="Cachot, Jerome" uniqKey="Cachot J" first="Jérôme" last="Cachot">Jérôme Cachot</name><affiliation wicri:level="3"><nlm:affiliation>University of Bordeaux, Avenue des Facultés CNRS EPOC 5805, 33405, Talence Cedex, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>University of Bordeaux, Avenue des Facultés CNRS EPOC 5805, 33405, Talence Cedex</wicri:regionArea><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author></analytic><series><title level="j">Ecotoxicology (London, England)</title><idno type="eISSN">1573-3017</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Environmental Monitoring (methods)</term><term>Geologic Sediments (chemistry)</term><term>Metals, Heavy (analysis)</term><term>Polychlorinated Biphenyls (analysis)</term><term>Polycyclic Aromatic Hydrocarbons (analysis)</term><term>Seawater (chemistry)</term><term>Tunisia</term><term>Water Pollutants, Chemical (analysis)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Metals, Heavy</term><term>Polychlorinated Biphenyls</term><term>Polycyclic Aromatic Hydrocarbons</term><term>Water Pollutants, Chemical</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Geologic Sediments</term><term>Seawater</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Environmental Monitoring</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Tunisia</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The present study investigates the quality of surface sediments from the Bizerte lagoon (North Tunisia) using an integrated approach including chemical contaminant analysis, bioassays and sediment quality guidelines (SQGs). Sediment samples were collected at 9 sites and analyzed for eight heavy metals (Hg, Cd, Cr, Cu, Pb, Zn, Ni, Fe and Mn). PAHs, PCBs, OCPs were measured previously in the same sediment samples. Our results indicated that the highest concentrations of metals were found near urban areas due to the municipial and industrial wastewater discharges. Sediment pollution assessment was carried out using geoaccumulation index and enrichment factor, which indicate a widespread pollution by Cd, Pb, Ni and Zn in the studied sediments. For bioassays, aqueous and organic extracts were used to assess toxicity and genotoxicity in sediments by using Microtox(®) and SOS Chromotest, respectively. Toxicity levels were compared to metallic and organic pollutants contents. Our results highlight differences in the pattern of responses between the different assays and show no correlation with all the studied contaminants, emphasizing the influence of other contaminants not analyzed in the present study. Based on SQGs, the results of toxicity assessment indicated that adverse effects caused by Ni and Zn would be expected frequently. Nickel was found to have the highest predicted acute toxicity, followed by Zn, Pb, Cd, Cu and Cr. There was no significant relationship between sediment toxicity calculated from heavy metal concentrations (SQG approach) and those measured with bioassays. These findings support the use of integrated approachs for evaluating the environmental risks of sediments.</div></front></TEI><affiliations><list><country><li>Canada</li><li>France</li><li>Tunisie</li></country><region><li>Alberta</li><li>Aquitaine</li><li>Gouvernorat de Tunis</li><li>Nouvelle-Aquitaine</li></region><settlement><li>Calgary</li><li>Talence</li><li>Tunis</li></settlement><orgName><li>Université de Calgary</li></orgName></list><tree><country name="Tunisie"><noRegion><name sortKey="Barhoumi, Badreddine" sort="Barhoumi, Badreddine" uniqKey="Barhoumi B" first="Badreddine" last="Barhoumi">Badreddine Barhoumi</name></noRegion><name sortKey="Atyaoui, Atef" sort="Atyaoui, Atef" uniqKey="Atyaoui A" first="Atef" last="Atyaoui">Atef Atyaoui</name><name sortKey="Driss, Mohamed Ridha" sort="Driss, Mohamed Ridha" uniqKey="Driss M" first="Mohamed Ridha" last="Driss">Mohamed Ridha Driss</name><name sortKey="Elbarhoumi, Anis" sort="Elbarhoumi, Anis" uniqKey="Elbarhoumi A" first="Anis" last="Elbarhoumi">Anis Elbarhoumi</name><name sortKey="Touil, Soufiane" sort="Touil, Soufiane" uniqKey="Touil S" first="Soufiane" last="Touil">Soufiane Touil</name></country><country name="France"><region name="Nouvelle-Aquitaine"><name sortKey="Clerandeau, Christelle" sort="Clerandeau, Christelle" uniqKey="Clerandeau C" first="Christelle" last="Clérandeau">Christelle Clérandeau</name></region><name sortKey="Cachot, Jerome" sort="Cachot, Jerome" uniqKey="Cachot J" first="Jérôme" last="Cachot">Jérôme Cachot</name></country><country name="Canada"><region name="Alberta"><name sortKey="Al Rawabdeh, Abdulla M" sort="Al Rawabdeh, Abdulla M" uniqKey="Al Rawabdeh A" first="Abdulla M" last="Al-Rawabdeh">Abdulla M. 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