NDLI: Environmental hazard of cadmium, copper, lead and zinc in metal-contaminated soils remediated by sulfosuccinamate formulation

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Del Carmen Hernández-soriano, Maria Peña, Aránzazu Mingorance, M. Dolores
Description	Country affiliation: Spain Author Affiliation: del Carmen Hernández-Soriano M ( Instituto Andaluz de Ciencias de la Tierra (UGR-CSIC), Avd. Las Palmeras 4, 18100, Armilla, Spain.)
Abstract	Accumulation of metals in soil at elevated concentrations causes risks to the environmental quality and human health for more than one hundred million people globally. The rate of metal release and the alteration of metal distribution in soil phases after soil washing with a sulfosuccinamate surfactant solution (Aerosol 22) were evaluated for four contaminated soils. Furthermore, a sequential extraction scheme was carried out using selective extractants (HAcO, $NH_{2}OH·HCl,$ $H_{2}O_{2}$ + $NH_{4}AcO)$ to evaluate which metal species are extracted by A22 and the alteration in metal distribution upon surfactant -washing. Efficiency of A22 to remove metals varied among soils. The washing treatment released up to 50% of Cd, 40% of Cu, 20% of Pb and 12% of Zn, mainly from the soluble and reducible soil fractions, therefore, greatly reducing the fraction of metals readily available in soil. Metal speciation analysis for the solutions collected upon soil washing with Aerosol 22 further confirmed these results. Copper and lead in solution were mostly present as soluble complexes, while Cd and Zn were present as free ions. Besides, redistribution of metals in soil was observed upon washing. The ratios of Zn strongly retained in the soil matrix and Cd complexed with organic ligands increased. Lead was mobilized to more weakly retained forms, which indicates a high bioavailability of the remaining Pb in soil after washing. Comprehensive knowledge on chemical forms of metals present in soil allows a feasible assessment of the environmental impact of metals for a given scenario, as well as possible alteration of environmental conditions, and a valuable prediction for potential leaching and groundwater contamination.
File Format	HTM / HTML
ISSN	14640325
Issue Number	10
Volume Number	13
e-ISSN	14640333
Journal	Journal of Environmental Monitoring
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2011-10-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Discipline Environmental Health Environmental Restoration And Remediation Hazardous Substances Analysis Soil Pollutants Succinates Chemistry Surface-active Agents Cadmium Copper Environmental Monitoring Lead Metals, Heavy Soil Zinc Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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