Ecotoxicological impact assessment of some heavy metals and their distribution in some fractions of mangrove sediments from Red Sea, Egypt.
Identifieur interne : 000131 ( Main/Exploration ); précédent : 000130; suivant : 000132Ecotoxicological impact assessment of some heavy metals and their distribution in some fractions of mangrove sediments from Red Sea, Egypt.
Auteurs : Ghada F. El-Said [Égypte] ; Doaa H. YoussefSource :
- Environmental monitoring and assessment [ 1573-2959 ] ; 2013.
Descripteurs français
- Wicri :
- geographic : Égypte.
English descriptors
- KwdEn :
- Ecosystem, Ecotoxicology, Egypt, Environmental Monitoring, Geologic Sediments (chemistry), Indian Ocean, Metals, Heavy (analysis), Metals, Heavy (toxicity), Water Pollutants, Chemical (analysis), Water Pollutants, Chemical (toxicity), Water Pollution, Chemical (statistics & numerical data), Wetlands.
- MESH :
- chemical , analysis : Metals, Heavy, Water Pollutants, Chemical.
- chemical , toxicity : Metals, Heavy, Water Pollutants, Chemical.
- geographic : Egypt, Indian Ocean.
- chemistry : Geologic Sediments.
- statistics & numerical data : Water Pollution, Chemical.
- Ecosystem, Ecotoxicology, Environmental Monitoring, Wetlands.
Abstract
The total and fraction concentrations of heavy metals (Mn, Cu, Ni, Pb, Co, and Cd) were analyzed in some sediment fractions (Φ2, Φ3, Φ4, Φ5) of selected mangrove ecosystems collected from the Egyptian Red Sea shoreline. The results revealed that manganese had the highest mean value (133 ± 97 mg/kg) followed by copper (49.9 ± 46.0 mg/kg), nickel (28.1 ± 11.8 mg/kg), lead (19 ± 13 mg/kg), cobalt (6.7 ± 4.0 mg/kg), and cadmium (3.327 ± 1.280 mg/kg). The concentrations of heavy metals in the different sediment fractions showed that there was a preferential accumulation of Cu, Co, Mn, and to a lesser degree Cd in the silt and clay fractions rather than in the sand-sized. The sediment quality was performed by using some sediment quality guidelines. Additionally, the contamination and the risk assessment of these heavy metals were achieved by different methods including, potential ecological risk index, contamination factor, pollution load index, and geoaccumulation index. According to the Sediment Quality Guidelines comparisons, the concentrations of Mn and Pb were low and showed no possibility of detrimental effects on the local environment. The levels of Cu and Ni were high, however, could not be considered to present serious threat to the mangrove ecosystem. The data showed that the mangrove ecosystems were affected by the Cd risk.
DOI: 10.1007/s10661-012-2561-9
PubMed: 22371036
Affiliations:
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Le document en format XML
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El-Said</name><affiliation wicri:level="1"><nlm:affiliation>Environmental Division, National Institute of Oceanography and Fisheries, El Anfoushy, Qyet Bay, Alexandria, Egypt. gfarouk66@yahoo.com</nlm:affiliation><country xml:lang="fr">Égypte</country><wicri:regionArea>Environmental Division, National Institute of Oceanography and Fisheries, El Anfoushy, Qyet Bay, Alexandria</wicri:regionArea><wicri:noRegion>Alexandria</wicri:noRegion></affiliation></author><author><name sortKey="Youssef, Doaa H" sort="Youssef, Doaa H" uniqKey="Youssef D" first="Doaa H" last="Youssef">Doaa H. Youssef</name></author></analytic><series><title level="j">Environmental monitoring and assessment</title><idno type="eISSN">1573-2959</idno><imprint><date when="2013" type="published">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ecosystem</term><term>Ecotoxicology</term><term>Egypt</term><term>Environmental Monitoring</term><term>Geologic Sediments (chemistry)</term><term>Indian Ocean</term><term>Metals, Heavy (analysis)</term><term>Metals, Heavy (toxicity)</term><term>Water Pollutants, Chemical (analysis)</term><term>Water Pollutants, Chemical (toxicity)</term><term>Water Pollution, Chemical (statistics & numerical data)</term><term>Wetlands</term></keywords><keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Metals, Heavy</term><term>Water Pollutants, Chemical</term></keywords><keywords scheme="MESH" type="chemical" qualifier="toxicity" xml:lang="en"><term>Metals, Heavy</term><term>Water Pollutants, Chemical</term></keywords><keywords scheme="MESH" type="geographic" xml:lang="en"><term>Egypt</term><term>Indian Ocean</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Geologic Sediments</term></keywords><keywords scheme="MESH" qualifier="statistics & numerical data" xml:lang="en"><term>Water Pollution, Chemical</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Ecosystem</term><term>Ecotoxicology</term><term>Environmental Monitoring</term><term>Wetlands</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Égypte</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The total and fraction concentrations of heavy metals (Mn, Cu, Ni, Pb, Co, and Cd) were analyzed in some sediment fractions (Φ2, Φ3, Φ4, Φ5) of selected mangrove ecosystems collected from the Egyptian Red Sea shoreline. The results revealed that manganese had the highest mean value (133 ± 97 mg/kg) followed by copper (49.9 ± 46.0 mg/kg), nickel (28.1 ± 11.8 mg/kg), lead (19 ± 13 mg/kg), cobalt (6.7 ± 4.0 mg/kg), and cadmium (3.327 ± 1.280 mg/kg). The concentrations of heavy metals in the different sediment fractions showed that there was a preferential accumulation of Cu, Co, Mn, and to a lesser degree Cd in the silt and clay fractions rather than in the sand-sized. The sediment quality was performed by using some sediment quality guidelines. Additionally, the contamination and the risk assessment of these heavy metals were achieved by different methods including, potential ecological risk index, contamination factor, pollution load index, and geoaccumulation index. According to the Sediment Quality Guidelines comparisons, the concentrations of Mn and Pb were low and showed no possibility of detrimental effects on the local environment. The levels of Cu and Ni were high, however, could not be considered to present serious threat to the mangrove ecosystem. The data showed that the mangrove ecosystems were affected by the Cd risk.</div></front></TEI><affiliations><list><country><li>Égypte</li></country></list><tree><noCountry><name sortKey="Youssef, Doaa H" sort="Youssef, Doaa H" uniqKey="Youssef D" first="Doaa H" last="Youssef">Doaa H. Youssef</name></noCountry><country name="Égypte"><noRegion><name sortKey="El Said, Ghada F" sort="El Said, Ghada F" uniqKey="El Said G" first="Ghada F" last="El-Said">Ghada F. El-Said</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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