Linked Life Data

12531256

Source:http://linkedlifedata.com/resource/pubmed/id/12531256

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2003-1-17
pubmed:abstractText
This work investigated the adsorption of Cu and Pb at the surface of gamma-Al(2)O(3) in the presence of fulvic acid to address the significance of dissolved organic matters on metal partitioning. Fulvic acid, obtained from International Humic Substance Society, represented dissolved organic matter. Fulvic acid concentrations employed herein were 1, 5, and 10 mg C/L, which simulated the relevant environmental conditions. Ion selective electrodes were employed to ascertain free Cu and Pb measurements. The maximum adsorption of 10mg C/L fulvic acid on gamma-Al(2)O(3) was 5 x 10(-2)mgC/mg gamma-Al(2)O(3). Fulvic acid promoted Cu adsorption in low pH conditions. The effects of fulvic acid on Pb adsorption were similar to those of Cu. The conditional stability constants of sorbed fulvic acids with Cu and Pb were determined to be in the order of 4 to 6 (log K). Cu and Pb species were modeled in heterogeneous systems using triple-layer model. Simulation results indicated that metal species are dominantly in complexation with fulvic acid, both in solution and at the gamma-Al(2)O(3) surface.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0043-1354
pubmed:author
pubmed:issnType
Print
pubmed:volume
37
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
743-52
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Effect of fulvic acid on the sorption of Cu and Pb onto gamma-Al2O3.
pubmed:affiliation
Department of Environmental Engineering and Health, Yuanpei Institute of Science and Technology, 306 Yuanpei Street, Hsinchu, Taiwan ROC. chwu@pc.ymit.edu.tw
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't