Biochemistry
; Cadmium
; Copper
; Ecology
; Estuaries
; Heavy metals
; Manganese
; Metals
; Pollution
; Risk assessment
; Sediments
; Ecological risk index
; PCA/APCS
; Pollution index
; PROMETHEE
; River sediments
; River pollution
; aluminum
; antimony
; arsenic
; cadmium
; calcium
; cobalt
; copper
; heavy metal
; iron
; lead
; lithium
; manganese
; mercury
; nickel
; selenium
; silicon
; silver
; strontium
; tin
; titanium
; uranium
; vanadium
; zinc
; heavy metal
; water pollutant
; bioavailability
; estuarine ecosystem
; estuarine sediment
; heavy metal
; risk assessment
; sediment pollution
; source apportionment
; absolute principal component scores
; Article
; Australia
; bioavailability
; concentration (parameters)
; concentration response
; controlled study
; ecological risk index
; enrichment factor
; environmental impact assessment
; estuary
; modified ecological risk index
; modified pollution index
; pollution index
; principal component analysis
; sediment
; statistical analysis
; analysis
; bioavailability
; China
; environmental monitoring
; risk assessment
; river
; sediment
; water pollutant
; Australia
; Brisbane Estuary
; Queensland
; Biological Availability
; China
; Environmental Monitoring
; Estuaries
; Geologic Sediments
; Metals, Heavy
; Risk Assessment
; Rivers
; Water Pollutants, Chemical
Scopus学科分类:
Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要:
A weak acid extraction was used to mobilize the loosely bound metals in estuary sediment samples. More than 30% of Ag, As, Ca, Cd, Co, Cu, Hg, Mn Ni, Pb and Zn were leached from the sediment showing that these metals are significantly present in the bioavailable form. PCA/APCS identified three sources of the metals, namely: lithogenic accounting for 72%, shipping related contributing 15% and traffic related representing 13% of the total load. Application of pollution index (PI) and modified pollution index (MPI) revealed that the sediment range from unpolluted to heavily polluted while ecological risk index (RI) classifies the sediment as posing low ecological risk modified ecological risk index (MRI) suggests considerable to very high ecological risk. To provide holistic insights into the ecological risks posed by metals, enrichment factor, MPI and MRI are recommended for the assessment of sediment in complex environments such as estuaries. � 2017 Elsevier Ltd
Queensland University of Technology (QUT), Science and Engineering Faculty, School of Chemistry, Physics and Mechanical Engineering, 2 George StQLD, Australia; Queensland University of Technology (QUT), Science and Engineering Faculty, School of Civil Engineering and Built Environment, 2 George StQLD, Australia
Recommended Citation:
Duodu G.O.,Goonetilleke A.,Ayoko G.A.. Potential bioavailability assessment, source apportionment and ecological risk of heavy metals in the sediment of Brisbane River estuary, Australia[J]. Marine Pollution Bulletin,2017-01-01,117(2018-01-02)