Linked Life Data

18650011

Source:http://linkedlifedata.com/resource/pubmed/id/18650011

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2-3
pubmed:dateCreated
2008-12-22
pubmed:abstractText
The adsorption/desorption of Pb, Cd and Cr(VI) on moderately contaminated farmland soils in Northeast China and the effect of pH value on adsorption/desorption were investigated. Soil column leaching experiment was also carried out to further understand the mobility of the three metals in aeration zone of soil. Both Langmuir and Freundlich model gave good fits to the adsorption data of Pb and Cd, while the adsorption data of Cr(VI) followed linear adsorption isotherm. The adsorption/desorption of Pb, Cd and Cr(VI) obtained equilibrium in a few hours. Adsorption amounts of the three metals decreased in the order: Pb>Cd>>Cr(VI). Desorption of the metals was insignificant at pH 5.0. Pb and Cd adsorption increased with pH, while Cr(VI) decreased. The effect of pH on desorption was contrary to that of adsorption. Leaching experiment showed that the mobility of these metals followed the order of Cr(VI)>>Cd>Pb, which was consistent with the adsorption/desorption study. The results suggest that once soil is polluted by wastewater containing Pb and Cd, Pb and Cd tend to accumulating in topsoil and move downward very slowly, while the mobility of Cr(VI) in soil/groundwater system is much high because only limited amount of Cr(VI) were adsorbed by soil.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0304-3894
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
162
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1261-8
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Investigation of the potential mobility of Pb, Cd and Cr(VI) from moderately contaminated farmland soil to groundwater in Northeast, China.
pubmed:affiliation
College of Environment and Resources, Jilin University, Changchun 130012, China. dmdong@mail.jlu.edu.cn
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't