Chemistry of metal retention by soils

Evans, L. J.

doi:10.1021/es00067a001

Cited by 396 publications

(245 citation statements)

References 14 publications

Supporting

Mentioning

227

Contrasting

Unclassified

Order By: Relevance

“…The trace metal concentration is governed by a number of interrelated processes, including inorganic and organic complexation, precipitation/dissolution reactions, adsorption/desorption reactions and redox reactions (Evans, 1989;Singh and Steinnes, 1994). These observed results indicate the high impact of particles on the regulation of trace mobility (Table 10).…”

Section: Behaviour Of Trace Elementsmentioning

confidence: 99%

“…Jenne (1968) noted the probable occurrence of Fe and Mn oxides as partial coatings on other minerals (and notably clay minerals). Clay minerals and oxyhydroxide minerals have long been recognized as the main metal sorbents in soils (Jenne, 1968;Evans, 1989) and in aquatic systems (Förstner and Wittmann, 1979;Benjamin and Leckie, 1981;Bilinski et al, 1991).…”

Section: Behaviour Of Trace Elementsmentioning

confidence: 99%

See 1 more Smart Citation

Mobility of major-, minor- and trace elements in solutions of a planosolic soil: Distribution and controlling factors

Pelfrêne

Gassama

Grimaud

2009

Applied Geochemistry

View full text Add to dashboard Cite

Section: Behaviour Of Trace Elementsmentioning

confidence: 99%

Section: Behaviour Of Trace Elementsmentioning

confidence: 99%

Mobility of major-, minor- and trace elements in solutions of a planosolic soil: Distribution and controlling factors

Pelfrêne

Gassama

Grimaud

2009

Applied Geochemistry

View full text Add to dashboard Cite

“…This may be due to the higher stability constants of Cu complexes with organic matter. Negatively charged functional groups such as phenolate and carboxylate increase in number during humification (Foth, 1978); hold heavy metals by complexation (Evans, 1989) and enhance the formation of metal complexes at high pH (Rieuwerts et al, 1998). Although there is a difference noticed in Cu content of various fractions in varying depth levels, the general trend is similar when considering percent availability.…”

Section: Coppermentioning

confidence: 99%

Assessment of heavy metal species in decomposed municipal solid waste

Esakku

Selvam

Joseph

et al. 2005

Chemical Speciation & Bioavailability

View full text Add to dashboard Cite

Heavy metal speciation studies on municipal solid waste samples collected from Kodungaiyur dumpsite in Chennai, India, were carried out for Cu, Ni, Pb, Zn, Cr, Fe, Mn and Cd. Three samples were collected at depths of 0 -1 m, 1 -2 m and 2 -3 m, and analyzed. X-ray diffraction studies showed the presence of montmorillonite, illite, quartz and calcium carbonate minerals. The Tessier method was used to fractionate the metal content into exchangeable, acid extractable, reducible and oxidizable fractions. Residual and total metal contents were determined in the aqua regia digest. Iron was the major metal constituent (20 g kg À1 ) while the lowest metal concentration was found for cadmium (3 mg kg À1 ). Descending order of the average total metal contents for these three depth levels was Fe, Cu, Zn, Cr, Mn, Pb, Ni and Cd. The bioavailable fraction (exchangeable and acid extractable fractions) comprised less than 40% of the total metal content for all the metals studied, except Cd. Most of the Fe and Cr were found to be associated with the residual fraction, which is almost inert. Based on the average of absolute values for the three depth levels, the bioavailability order of metals is Zn4Mn4Pb4Ni4Cu4Fe4Cr4Cd. Recovery obtained by comparing the aqua regia extracted metal content with the sum of sequentially extracted fractions was in the range of 91 -110%.

show abstract

“…Cation exchange of PTMs and other metals depends on the density of ionic strength of the surfaces of soil colloids and on the relative charges of metal species in soil solution. The surface negative charge may be pH dependent (soil organic matter) or permanent (some clay minerals) (Evans 1989). The concentration of easily extractable P varied from 0.26 to 76.67 mg/kg in the kitchen garden soils (apparently fertilized) from the Mežica Valley (location 8).…”

Section: Resultsmentioning

confidence: 99%

Relationship of soil properties to fractionation, bioavailability and mobility of lead and zinc in soil

Finzgar¹,

Tlustoš²,

Leštan³

2007

Plant Soil Environ.

View full text Add to dashboard Cite

Sequential extractions, metal uptake by Taraxacum officinale, Ruby's physiologically based extraction test (PBET) and toxicity characteristic leaching procedure (TCLP), were used to assess the risk of Pb and Zn in contaminated soils, and to determine relationships among soil characteristics, heavy metals soil fractionation, bioavailability and leachability. Regression analysis using linear and 2 nd order polynomial models indicated relationships between Pb and Zn contamination and soil properties, although of small significance (P < 0.05). Statistically highly significant correlations (P < 0.001) were obtained using multiple regression analysis. A correlation between soil cation exchange capacity (CEC) and soil organic matter and clay content was expected. The proportion of Pb in the PBET intestinal phase correlated with total soil Pb and Pb bound to soil oxides and the organic matter fraction. The leachable Pb, extracted with TCLP, correlated with the Pb bound to carbonates and soil organic matter content (R 2 = 69%). No highly significant correlations (P < 0.001) for Zn with soil properties or Zn fractionation were obtained using multiple regression.

show abstract

Chemistry of metal retention by soils

Cited by 396 publications

References 14 publications

Mobility of major-, minor- and trace elements in solutions of a planosolic soil: Distribution and controlling factors

Mobility of major-, minor- and trace elements in solutions of a planosolic soil: Distribution and controlling factors

Assessment of heavy metal species in decomposed municipal solid waste

Relationship of soil properties to fractionation, bioavailability and mobility of lead and zinc in soil

Contact Info

Product

Resources

About