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Cited by 512Heavy metals in environmentEnvironmental and Analytical Chemistry StudiesAdsorption and biosorption for pollutant removal

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Salinity increases mobility of heavy metals in soils

Acosta, J.A., Jansen, B., Kalbitz, K., Faz, A., Martínez-Martínez, S.·2011·Chemosphere
DOI 10.1016/j.chemosphere.2011.07.046
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Abstract

The effect of salinity induced by CaCl(2), MgCl(2), NaCl and Na(2)SO(4) on the mobility of Cu, Cd, Pb and Zn was studied. An increase of ionic strength by any salts promoted a higher release of Cd than the others metals. When CaCl(2) and NaCl were applied, Cd and Pb showed the highest degree of mobilization. When MgCl(2) was applied, Cd and Cu were mobilized the most. Finally, an increase of Na(2)SO(4) also promoted the strongest mobilization of Cd and Cu. As the total heavy metal content was higher, the percentage of Pb and Cu released upon salinization decreased, indicating that these metals are strongly bound to soil constituents. An increase of carbonates in the soil promoted a higher release of Pb for all used salts and for Zn when MgCl(2) and NaCl were used. This indicates that Pb and Zn are adsorbed on the surface of carbonate crystals. An increase of fine particles promoted a decrease of percentage of released Cd for all salts, indicating that Cd is strongly retained in the fine fractions. The main mechanism regulating Pb and Cd mobility was competition with Ca(2+) for sorption sites followed for metal chloro-complexation, association between the Cd/Pb-sulfates and competition with Mg(2+). The main mechanism regulating Cu mobility was the formation of Cu-sulfate, followed by competition with cations (Mg > Ca) and chloride. For Zn, competition with Ca(2+) for sorption sites was the most important process for its mobility; followed by Zn-sulfate association and, finally…

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Research works printed but not linked: 33

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Metadata

Authors
Acosta, J. A., Jansen, B., Kalbitz, K., Faz, A., & Martínez-Martínez, S.
Affiliations
  • Universidad Politécnica de Cartagena (ES)
  • University of Amsterdam (NL)
Corresponding author
Acosta, J.A.
ORCID
Venue
Chemosphere
Publisher
Elsevier BV
Published
2011-11
Volume
85
Issue
8
Pages
1318-1324
ISSN
0045-6535 (ISSN-L)
DOI
10.1016/j.chemosphere.2011.07.046
OpenAlex
W2107852012
Cited by
512
References
0
Citations by year
2026: 43 · 2025: 54 · 2024: 45 · 2023: 58 · 2022: 50 · 2021: 56 · 2020: 45 · 2019: 30 · 2018: 35 · 2017: 24 · 2016: 18 · 2015: 15 · 2014: 23 · 2013: 12 · 2012: 3
FWCI
11.27
Type
journal article
Language
en
Open access
closed
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations
  • Chemosphere (publishedVersion)
  • PubMed (publishedVersion)
  • UvA-DARE (University of Amsterdam) (publishedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Topics
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
  • Physical Sciences › Environmental Science › Water Science and Technology › Environmental and Analytical Chemistry Studies
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
Keywords
soil salinization, heavy metal mobility, cadmium, lead, copper, zinc, chloride salts, sodium sulfate, calcium chloride, magnesium chloride, ionic strength, carbonate adsorption, metal sulfates, cation competition, metal speciation
MeSH terms
Adsorption, Cadmium, Copper, Environmental Monitoring, Lead, Osmolar Concentration, Soil, Soil Pollutants, Zinc, Metals, Heavy, Salinity

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