Linked Life Data

19010483

Source:http://linkedlifedata.com/resource/pubmed/id/19010483

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2009-1-12
pubmed:abstractText
Humic substances (HS) are ubiquitous in natural waters. Due to their plentiful binding sites, HS play an important role in the mobilization and transport of pollutants in natural environments. However, the presence state of HS causes difficulty in exploring the interactions between HS and pollutants in aqueous solutions. In this study, an effective and rapid method was proposed to quantify the interaction between a cationic dye and HS in aqueous solutions. Humic acids (HA) and Toluidine Blue (TB) were respectively used as the model HS and model cationic dye. This characterization method was based on the binding of TB to HA molecule to form a TB-HA complex. From the difference between the visible spectra of the dye and the TB-HA complex, the adsorption capability of HA could be evaluated. Results demonstrate that the Langmuir adsorption isotherm theory was appropriate to describe the interaction between TB and HA. Both pH and ionic strength had significant effects on the adsorption of TB onto HA. These results suggest that the binding reaction was a physical adsorption driven by the electrostatic interaction.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1095-7103
pubmed:author
pubmed:issnType
Electronic
pubmed:day
1
pubmed:volume
331
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
15-20
pubmed:dateRevised
2009-11-11
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Quantification of the interactions between a cationic dye and humic substances in aqueous solutions.
pubmed:affiliation
Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
pubmed:publicationType
Journal Article