Assessment of heavy metals pollution using AVS-SEM and fractionation techniques in Edku Lagoon sediments, Mediterranean Sea, Egypt.
Identifieur interne : 000053 ( Main/Exploration ); précédent : 000052; suivant : 000054Assessment of heavy metals pollution using AVS-SEM and fractionation techniques in Edku Lagoon sediments, Mediterranean Sea, Egypt.
Auteurs : Gehan M. El Zokm [Égypte] ; Mohamed A. Okbah ; Alaa M. YounisSource :
- Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering [ 1532-4117 ] ; 2015.
Descripteurs français
- Wicri :
- geographic : Égypte.
English descriptors
- KwdEn :
- Animals, Cadmium (analysis), Chemical Fractionation, Egypt, Environmental Monitoring (methods), Environmental Pollution (analysis), Geologic Sediments (analysis), Geologic Sediments (chemistry), Mediterranean Sea, Metals, Heavy (analysis), Nickel (analysis), Sulfides (analysis), Water Pollutants (analysis), Zinc (analysis).
- MESH :
- chemical , analysis : Cadmium, Metals, Heavy, Nickel, Sulfides, Water Pollutants, Zinc.
- geographic : Egypt, Mediterranean Sea.
- analysis : Environmental Pollution, Geologic Sediments.
- chemistry : Geologic Sediments.
- methods : Environmental Monitoring.
- Animals, Chemical Fractionation.
Abstract
A method is presented to evaluate the fractionation of metals (Fe, Zn, Cu, Pb, Cd and Ni), acid volatile sulfide (AVS) and simultaneously extracted metals (SEM) in Edku lagoon sediments. Thirteen sediment samples were collected from the study area in the period of 2010-2011 to assess the potential bioavailability and toxicity of the selected metals. According to classification of the Interim Sediment Quality Quidelines (ISQG), five stations near the drains exhibited 10% toxic probability. The high AVS and low ∑SEM ranges in Summer were identified as 6-138 and 0.86-3.3 µmol g(-1) dry wet, respectively which are referring to the low mobility of heavy metals in this season and vice versa for winter (2.5-23.9 and 1.16-3.82 µmol g(-1) dry wet, respectively). According to the evaluation of USEPA, all sediment samples showed ∑SEM/AVS < 1 and ΣSEM-AVS < 0 and this indicates that Edku lagoon sediments didn't cause any adverse effects. Meanwhile, the calculations of the global contamination factor (GCF) and the individual contamination factors (ICF) using fractionation technique gave values of 111.644 and 84.555 in El Bosily drain and station 1 near the cages of fish farm, respectively due to possible contamination. Interestingly, the collected data refer that the mobility and bioavailability of heavy metals in Edku lagoon sediments posed a low risk of adverse biological effects due to cadmium, copper, lead, nickel and zinc in all evaluated stations.
DOI: 10.1080/10934529.2015.994945
PubMed: 25837560
Affiliations:
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Le document en format XML
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Okbah</name></author><author><name sortKey="Younis, Alaa M" sort="Younis, Alaa M" uniqKey="Younis A" first="Alaa M" last="Younis">Alaa M. 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El Zokm</name><affiliation wicri:level="1"><nlm:affiliation>a Department of Marine Chemistry , National Institute of Oceanography and Fisheries , Alexandria , Egypt.</nlm:affiliation><country xml:lang="fr">Égypte</country><wicri:regionArea>a Department of Marine Chemistry , National Institute of Oceanography and Fisheries , Alexandria </wicri:regionArea><wicri:noRegion>Alexandria </wicri:noRegion></affiliation></author><author><name sortKey="Okbah, Mohamed A" sort="Okbah, Mohamed A" uniqKey="Okbah M" first="Mohamed A" last="Okbah">Mohamed A. Okbah</name></author><author><name sortKey="Younis, Alaa M" sort="Younis, Alaa M" uniqKey="Younis A" first="Alaa M" last="Younis">Alaa M. Younis</name></author></analytic><series><title level="j">Journal of environmental science and health. 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Thirteen sediment samples were collected from the study area in the period of 2010-2011 to assess the potential bioavailability and toxicity of the selected metals. According to classification of the Interim Sediment Quality Quidelines (ISQG), five stations near the drains exhibited 10% toxic probability. The high AVS and low ∑SEM ranges in Summer were identified as 6-138 and 0.86-3.3 µmol g(-1) dry wet, respectively which are referring to the low mobility of heavy metals in this season and vice versa for winter (2.5-23.9 and 1.16-3.82 µmol g(-1) dry wet, respectively). According to the evaluation of USEPA, all sediment samples showed ∑SEM/AVS < 1 and ΣSEM-AVS < 0 and this indicates that Edku lagoon sediments didn't cause any adverse effects. Meanwhile, the calculations of the global contamination factor (GCF) and the individual contamination factors (ICF) using fractionation technique gave values of 111.644 and 84.555 in El Bosily drain and station 1 near the cages of fish farm, respectively due to possible contamination. Interestingly, the collected data refer that the mobility and bioavailability of heavy metals in Edku lagoon sediments posed a low risk of adverse biological effects due to cadmium, copper, lead, nickel and zinc in all evaluated stations.</div></front></TEI><affiliations><list><country><li>Égypte</li></country></list><tree><noCountry><name sortKey="Okbah, Mohamed A" sort="Okbah, Mohamed A" uniqKey="Okbah M" first="Mohamed A" last="Okbah">Mohamed A. Okbah</name><name sortKey="Younis, Alaa M" sort="Younis, Alaa M" uniqKey="Younis A" first="Alaa M" last="Younis">Alaa M. Younis</name></noCountry><country name="Égypte"><noRegion><name sortKey="El Zokm, Gehan M" sort="El Zokm, Gehan M" uniqKey="El Zokm G" first="Gehan M" last="El Zokm">Gehan M. El Zokm</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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