Dissolution of trace element contaminants from two coastal plain soils as affected by pH

Journal of Environmental Quality
JiSu Bang, Dean Hesterberg

Abstract

Trace element mobility in soils depends on contaminant concentration, chemical speciation, water movement, and soil matrix properties such as mineralogy, pH, and redox potential. Our objective was to characterize trace element dissolution in response to acidification of soil samples from two abandoned incinerators in the North Carolina Coastal Plain. Trace element concentrations in 11 soil samples from both sites ranged from 2 to 46 mg Cu kg(-1), 3 to 105 mg Pb kg(-1), 1 to 102 mg Zn kg(-1), 3 to 11 mg Cr kg(-1), < 0.1 to 10 mg As kg(-1), and < 0.01 to 0.9 mg Cd kg(-1). Acidified CaCl2 solutions were passed through soil columns to bring the effluent solution to approximately pH 4 during a 280-h flow period. Maximum concentrations of dissolved Cu, Pb, and Zn at the lowest pH of an experiment (pH 3.8-4.1) were 0.32 mg Cu L(-1), 0.11 mg Pb L(-1), and 1.3 mg Zn L(-1) for samples from the site with well-drained soils, and 0.25 mg Cu L(-1), 1.2 mg Pb L(-1), and 1.4 mg Zn L(-1) for samples from the site with more poorly drained soils. Dissolved Cu concentration at pH 4 increased linearly with increasing soil Cu concentration, but no such relationship was found for Zn. Dissolved concentrations of other trace elements were below our ana...Continue Reading

References

Dec 10, 2002·Journal of Environmental Quality·Orathai SukreeyapongseHans Christian Bruun Hansen

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Citations

Feb 22, 2012·Bulletin of Environmental Contamination and Toxicology·Krystyna Niesiobędzka
Dec 26, 2015·International Journal of Environmental Research and Public Health·Zhouping LiuCheng Zhu
Aug 21, 2007·Chemosphere·Satyendra P BhavsarMiriam L Diamond
Nov 20, 2015·Environmental Science and Pollution Research International·Haijian BingZijiang Yang
Mar 31, 2015·Water, Air, and Soil Pollution·Dorota Adamczyk-SzabelaWojciech M Wolf
Dec 19, 2007·The Analyst·Jeffrey R Bacon, Christine M Davidson
Mar 31, 2009·Journal of Environmental Quality·Sanjay B ShahJames T Parsons
Sep 13, 2019·Environmental Science and Pollution Research International·Yingbo DongChenjing Liu
Jul 14, 2020·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Hana VocaValeria D'Orazio
Jan 28, 2021·Environmental Toxicology and Chemistry·Jingxuan ShiJiyan Shi
Jul 13, 2021·Frontiers in Microbiology·Alexandra ŠimonovičováDomenico Pangallo
Jul 16, 2021·Environmental Science and Pollution Research International·Xian XiaoYuan Zhao

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