Bioavailability of heavy metals monitoring water, sediments and fish species from a polluted estuary

Martorell, Juan José Vicente; Riaño, M. D. Galindo; Garcı́a-Vargas, Manuel; Granado-Castro, M.D.

doi:10.1016/j.jhazmat.2008.05.106

Cited by 235 publications

(120 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Carbonyl, phenolic and carboxylic functional groups of the humic and fulvic acid are assumed to be responsible for the binding. The copper in the oxidizable phase is not considered very available because it is thought to be associated with stable high-molecular weight humic substances that release small amounts of metal slowly (Mirillo et al, 2002;Vincente-Martorell et al, 2009). However, in sites VII, VIII, XI and XII the residual form was the predominant species of Cu.…”

Section: Coppermentioning

confidence: 99%

Assessment of heavy metal speciation in soils impacted with crude oil in the Niger Delta, Nigeria

Iwegbue

2011

Chemical Speciation & Bioavailability

View full text Add to dashboard Cite

Chemical fractionation of Cd, Cu, Pb, Ni, Cr, Zn and Mn in soils that had received a significant impact of crude oil spillage in the Niger Delta, Nigeria was studied using a sequential chemical extraction method. The results revealed that significant amounts of the metals (Cd, Cu, Pb, Ni, Cr, Zn and Mn) were found in the most labile fractions as compared to the control site. On average, Ni, Cr and Zn were mostly associated with the residual fraction; Pb and Mn with the Fe -Mn oxides; Cu with the organic fraction and Cd with the exchangeable fraction. Among the non-residual fractions, metals were mostly associated with the Fe -Mn oxides fraction. The mobility factors of these metals were higher at the impacted sites as compared with the control site. High mobility of the metals in the impacted soils was associated with the oil spillage, since exogenous metals are usually weakly bound to soil particles. The mobility factors for the metals follow the order: Cd4Zn4Pb4Ni4Mn4Cu4Cr.

show abstract

Section: Coppermentioning

confidence: 99%

Assessment of heavy metal speciation in soils impacted with crude oil in the Niger Delta, Nigeria

Iwegbue

2011

Chemical Speciation & Bioavailability

View full text Add to dashboard Cite

show abstract

“…In addition, the form of occurrence of an element is strictly dependent on the physico-chemical conditions in the water, changes in which affect the speciation of the compounds present in it. The species of metals therefore depend on such factors as the water temperature, the amount of dissolved oxygen, the biological activity of organisms (Horng et al, 2009;Vicente-Martorell et al, 2009) and the bedrock. One of the most important of these factors, however, is the pH of the water.…”

Section: Metal In Surface Watersmentioning

confidence: 99%

“…One of the most important of these factors, however, is the pH of the water. In slightly alkaline water with a high oxygen content, metal ions convert to poorly soluble forms that tend to adsorb on the suspended matter in the water (Gaur et al, 2005;Vicente-Martorell et al, 2009). …”

Section: Metal In Surface Watersmentioning

confidence: 99%

The speciation and physico-chemical forms of metals in surface waters and sediments

Namieśnik

Rabajczyk

2010

Chemical Speciation & Bioavailability

143

View full text Add to dashboard Cite

Surface waters can be contaminated in many ways, e.g., by solutions and suspended matter. Moreover, insoluble substances in colloidal form, in suspension or adsorbed on solid bodies can dissolve in response to changing physical and chemical conditions and become a secondary source of surface water pollution, thereby endangering wildlife. In addition, if we take into account varying rates of flow, contaminants can be transported over considerable distances. Hydrological processes, which determine factors, such as the rate of sedimentation, also influence the quality of surface waters; bottom sediments can contain large quantities of accumulated organic and inorganic compounds, including heavy metals. The physical and chemical properties of aquatic ecosystems are characterized by a number of interdependent parameters. Hence, factors such as temperature, oxygen content and pH of a water body can alter the solubility of the salts present in it, the forms of occurrence of particular species, as well as their bioavailability and toxicity. Thus it is necessary to determine the various species of metals present in the different compartments of the aquatic ecosystem.

show abstract

“…When they enter the aquatic system, they are mainly bound to particulate matter and eventually settled into sediments. Numerous investigators have investigated the contamination of heavy metals in the aquatic ecosystem (Fernandes, 1997;Vicente-Martorell et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Contamination trends of trace metals and coupling with algal productivity in sediment cores in Pearl River Delta, South China

et al. 2014

View full text Add to dashboard Cite

Bioavailability of heavy metals monitoring water, sediments and fish species from a polluted estuary

Cited by 235 publications

References 28 publications

Assessment of heavy metal speciation in soils impacted with crude oil in the Niger Delta, Nigeria

Assessment of heavy metal speciation in soils impacted with crude oil in the Niger Delta, Nigeria

The speciation and physico-chemical forms of metals in surface waters and sediments

Contamination trends of trace metals and coupling with algal productivity in sediment cores in Pearl River Delta, South China

Contact Info

Product

Resources

About