Idioma:

Distribution, Seasonal Variations and Ecotoxicological Significance of Heavy Metals in Sediments of Cross River Estuary Mangrove Swamp

Essien, J. P ; Antai, S. P ; Olajire, A. A

Water, air, and soil pollution, 2009-02, Vol.197 (1-4), p.91-105 [Periódico revisado por pares]

Dordrecht: Dordrecht : Springer Netherlands

Texto completo disponível

Citações Citado por

Enviar para

Título:
Distribution, Seasonal Variations and Ecotoxicological Significance of Heavy Metals in Sediments of Cross River Estuary Mangrove Swamp
Autor: Essien, J. P ; Antai, S. P ; Olajire, A. A
Assuntos: Animal, plant and microbial ecology ; anthropogenic activities ; Applied ecology ; Applied sciences ; Atmospheric Protection/Air Quality Control/Air Pollution ; Biological and medical sciences ; Climate Change/Climate Change Impacts ; Contamination ; Crude oil ; dry season ; Earth and Environmental Science ; Earth sciences ; Earth, ocean, space ; Ecosystems ; ecotoxicology ; Ecotoxicology, biological effects of pollution ; Engineering and environment geology. Geothermics ; Environment ; Environmental monitoring ; Estuaries ; Exact sciences and technology ; Fundamental and applied biological sciences. Psychology ; Heavy metals ; Hydrogeology ; mangrove swamps ; Marine and brackish environment ; Metals ; physicochemical properties ; Pollution ; Pollution sources. Measurement results ; Pollution, environment geology ; River ecology ; rivers ; seasonal variation ; Seasonal variations ; Seasons ; sediment contamination ; Sediments ; Soil and sediments pollution ; Soil Science & Conservation ; spatial distribution ; Studies ; Water Quality/Water Pollution ; wet season
É parte de: Water, air, and soil pollution, 2009-02, Vol.197 (1-4), p.91-105
Notas: http://dx.doi.org/10.1007/s11270-008-9793-x
Descrição: The concentrations and distribution of selected heavy metals in epipelic and benthic sediments of Cross River Estuary mangrove swamp were studied to determine the extent of anthropogenic inputs from industrial activities and to estimate the effects of seasonal variations on geochemical processes in this tropical estuarine ecosystem. The analysis shows that the mean concentrations (mg/kg, dw) of Cu, Cr, Fe, Ni, Pb, V and Zn vary from 24.1-32.4, 19.9-27.4, 666.7-943.5, 15.2-30.3, 8.8-24.7, 2.2-6.9 and 140.1-188.9, respectively. An important observation is that, in general, lowest metal concentrations are found during the dry season, compared to wet season. Pollution load index (PLI) and index of geoaccumulation (I geo) revealed overall low values but the enrichment factors (EFs) for Cr, Zn, and V were high, and this reflects the intensity of anthropogenic inputs related to industrial discharge into the estuary. The mean concentrations of Zn, Cu and to some extent Ni exceeded the Effects Range--Low (ERL) and Threshold Effect Level (TEL) values in majority of the samples studied, indicating that there may be some ecotoxicological risk to organisms living in these sediments. The inter-element relationship revealed the identical source of elements in the sediments of the studied area. The concentration of heavy metals reported in this work will be useful as baselines for comparison in future sediment quality studies.
Editor: Dordrecht: Dordrecht : Springer Netherlands
Idioma: Inglês

Links

View record in Pascal Francis

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Distribution, Seasonal Variations and Ecotoxicological Significance of Heavy Metals in Sediments of Cross River Estuary Mangrove Swamp

Essien, J. P ; Antai, S. P ; Olajire, A. A

Dordrecht: Dordrecht : Springer Netherlands

Buscando em bases de dados remotas. Favor aguardar.