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Effect of physicochemical soil characteristics on copper and lead solubility in polluted and unpolluted soils

Virginia IR Unamuno, Erik Meers UGent, Gijs Du Laing UGent and Filip Tack UGent (2009) SOIL SCIENCE. 174(11). p.601-610
abstract
Total metal content in the soil in itself is insufficient as a measure to indicate the actual environmental risks involved with soil contamination. Understanding the mobility of heavy metals in the soil and their speciation in the soil solution is of great importance for accurately assessing environmental risks posed by these metals. Solid-solution partition coefficients (soil-water distribution coefficient [K-d]) for copper (Cu) and lead (Pb) were analyzed in a range of clean and contaminated agricultural soils, and metal speciation in soil solution was assessed. The influence of variables such as pH, soil organic carbon, clay content, and total soil metal concentration on the solid-solution partitioning and speciation of Cu and Pb were evaluated using multiple regression models. The best models were obtained for Kd that are based on total metal concentrations in both the soil solid phase, and the pore water and the various metal binding phases. In general, between 70% and 90% of the total variance was explained. The explained variance was significantly increased by taking the activity of the free metal into account. Strong correlations (R-2 = 0.88) were obtained by multiple reguession analysis involving free metal ion (Cu2+, Pb2+) concentrations calculated with the equilibrium speciation model, Windermere Humic Aqueous Model/Model VI.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
CONTAMINATED SOILS, heavy metals, HEAVY-METALS, ORGANIC-MATTER, TRACE-ELEMENTS, SOLUTION SPECIATION, HUMIC SUBSTANCES, ZN, CD, PB, CU, lead, soil solution, mobility, Copper, availability
journal title
SOIL SCIENCE
Soil Sci.
volume
174
issue
11
pages
601 - 610
Web of Science type
Article
Web of Science id
000271997600003
JCR category
SOIL SCIENCE
JCR impact factor
0.974 (2009)
JCR rank
24/31 (2009)
JCR quartile
4 (2009)
ISSN
0038-075X
DOI
10.1097/SS.0b013e3181bf2f52
language
English
UGent publication?
yes
classification
A1
id
853436
handle
http://hdl.handle.net/1854/LU-853436
date created
2010-02-05 14:02:30
date last changed
2010-02-19 10:48:13
@article{853436,
  abstract     = {Total metal content in the soil in itself is insufficient as a measure to indicate the actual environmental risks involved with soil contamination. Understanding the mobility of heavy metals in the soil and their speciation in the soil solution is of great importance for accurately assessing environmental risks posed by these metals. Solid-solution partition coefficients (soil-water distribution coefficient [K-d]) for copper (Cu) and lead (Pb) were analyzed in a range of clean and contaminated agricultural soils, and metal speciation in soil solution was assessed. The influence of variables such as pH, soil organic carbon, clay content, and total soil metal concentration on the solid-solution partitioning and speciation of Cu and Pb were evaluated using multiple regression models. The best models were obtained for Kd that are based on total metal concentrations in both the soil solid phase, and the pore water and the various metal binding phases. In general, between 70\% and 90\% of the total variance was explained. The explained variance was significantly increased by taking the activity of the free metal into account. Strong correlations (R-2 = 0.88) were obtained by multiple reguession analysis involving free metal ion (Cu2+, Pb2+) concentrations calculated with the equilibrium speciation model, Windermere Humic Aqueous Model/Model VI.},
  author       = {Unamuno, Virginia IR and Meers, Erik and Du Laing, Gijs and Tack, Filip},
  issn         = {0038-075X},
  journal      = {SOIL SCIENCE},
  keyword      = {CONTAMINATED SOILS,heavy metals,HEAVY-METALS,ORGANIC-MATTER,TRACE-ELEMENTS,SOLUTION SPECIATION,HUMIC SUBSTANCES,ZN,CD,PB,CU,lead,soil solution,mobility,Copper,availability},
  language     = {eng},
  number       = {11},
  pages        = {601--610},
  title        = {Effect of physicochemical soil characteristics on copper and lead solubility in polluted and unpolluted soils},
  url          = {http://dx.doi.org/10.1097/SS.0b013e3181bf2f52},
  volume       = {174},
  year         = {2009},
}

Chicago
Unamuno, Virginia IR, Erik Meers, Gijs Du Laing, and Filip Tack. 2009. “Effect of Physicochemical Soil Characteristics on Copper and Lead Solubility in Polluted and Unpolluted Soils.” Soil Science 174 (11): 601–610.
APA
Unamuno, V. I., Meers, E., Du Laing, G., & Tack, F. (2009). Effect of physicochemical soil characteristics on copper and lead solubility in polluted and unpolluted soils. SOIL SCIENCE, 174(11), 601–610.
Vancouver
1.
Unamuno VI, Meers E, Du Laing G, Tack F. Effect of physicochemical soil characteristics on copper and lead solubility in polluted and unpolluted soils. SOIL SCIENCE. 2009;174(11):601–10.
MLA
Unamuno, Virginia IR, Erik Meers, Gijs Du Laing, et al. “Effect of Physicochemical Soil Characteristics on Copper and Lead Solubility in Polluted and Unpolluted Soils.” SOIL SCIENCE 174.11 (2009): 601–610. Print.