DOI: 10.1016/j.marpolbul.2016.02.027
Scopus记录号: 2-s2.0-84958559204
论文题名: Bioavailability and assessment of heavy metal pollution in sediment cores off the Mejerda River Delta (Gulf of Tunis): How useful is a multiproxy approach?
作者: Helali M.A. ; Oueslati W. ; Zaaboub N. ; Added A. ; Aleya L.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2016
卷: 105, 期: 1 起始页码: 215
结束页码: 226
语种: 英语
英文关键词: Chemical speciation
; Coastal areas
; Enrichment factor
; Geo-accumulation index
; Toxicity
Scopus关键词: Biochemistry
; Cadmium
; Catchments
; Chemical speciation
; Heavy metals
; Iodine
; Pollution
; Toxicity
; Trace elements
; Zinc
; Coastal area
; Enrichment factors
; Geo-accumulation index
; Heavy metal pollution
; Major and trace elements
; Multiproxy approach
; Residual fraction
; Trace element accumulation
; River pollution
; acetic acid
; aluminum
; cadmium
; carbonic acid
; heavy metal
; iron
; lead
; organic matter
; sulfide
; zinc
; cadmium
; carbonic acid derivative
; heavy metal
; trace element
; water pollutant
; zinc
; bioavailability
; deltaic deposit
; enrichment
; geoaccumulation index
; heavy metal
; pollution monitoring
; sediment core
; sediment pollution
; trace element
; Article
; bioavailability
; catchment
; concentration (parameters)
; environmental impact assessment
; geographic distribution
; Gulf stream
; pollution monitoring
; pollution transport
; river ecosystem
; sediment
; Tunisia
; water contamination
; water flow
; water pollutant
; water pollution
; analysis
; chemistry
; environmental monitoring
; mining
; pollution
; procedures
; river
; Gulf of Tunis
; Mediterranean Sea
; Medjerda Basin
; Cadmium
; Carbonates
; Environmental Monitoring
; Environmental Pollution
; Geologic Sediments
; Metals, Heavy
; Mining
; Rivers
; Trace Elements
; Tunisia
; Water Pollutants, Chemical
; Zinc
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Three core samples were taken from zones offshore from the Mejerda River Delta (Tunisia) and analyzed for major and trace elements to assess their relationships with organic matter, monosulfides and carbonates, as well as for pollution and bioavailability. Chemical speciation, ∑ SEM/AVS, the enrichment factor (EF) and the geo-accumulation index (I-geo) were used. Iron, cadmium, lead and zinc - the most frequently mined metals in the Mejerda catchment - were found as contaminants in the offshore areas. Estimations of trace element accumulation using the EF and the I-geo index show that lead, and to a lesser extent zinc, are the most polluting metals off the Mejerda outlet. According to their bioavailability, these metals are also the most toxic. Only cadmium is heavily present in delta sediment (EF > 100) though deeply sequestrated (100% bound to the residual fraction) and thus presents no toxicity. © 2016 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/87161
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: Laboratoire des Ressources Minérales et Environnement, Département de Géologie, Faculté des Sciences de Tunis, Université Tunis-El Manar, Tunisia; Laboratoire du Milieu Marin, Institut National des Sciences et Technologies de la Mer, Salammbô, Tunisia; Université de Bourgogne Franche-Comté, Laboratoire de Chrono-Environnement, UMR CNRS 6249, La Bouloie, Besançon Cedex, France
Recommended Citation:
Helali M.A.,Oueslati W.,Zaaboub N.,et al. Bioavailability and assessment of heavy metal pollution in sediment cores off the Mejerda River Delta (Gulf of Tunis): How useful is a multiproxy approach?[J]. Marine Pollution Bulletin,2016-01-01,105(1)