Linked Life Data

18804647

Source:http://linkedlifedata.com/resource/pubmed/id/18804647

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2008-9-22
pubmed:abstractText
A novel amperometric sensor for the determination of sulfite was fabricated based on multiwalled carbon nanotubes (MWCNTs)/ferrocene-branched chitosan (CHIT-Fc) composites-covered glassy carbon electrode (GCE). The electrochemical behavior of the sensor was investigated in detail by cyclic voltammetry. The apparent surface electron transfer rate constant (K(s)) and charge transfer coefficient (alpha) of the CHIT-Fc/MWCNTs/GCE were also determined by cyclic voltammetry, which were about 1.93 cm s(-1) and 0.42, respectively. The sensor displayed good electrocatalytic activity towards the oxidation of sulfite. The peak potential for the oxidation of sulfite was lowered by at least 330 mV compared with that obtained at CHIT/MWCNTs/GCE. In optimal conditions, linear range spans the concentration of sulfite from 5 microM to 1.5mM and the detection limit was 2.8 microM at a signal-to-noise ratio of 3. The proposed method was used for the determination of sulfite in boiler water. In addition, the sensor has good stability and reproducibility.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1873-3573
pubmed:author
pubmed:issnType
Electronic
pubmed:day
19
pubmed:volume
77
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
366-71
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Amperometric sulfite sensor based on multiwalled carbon nanotubes/ferrocene-branched chitosan composites.
pubmed:affiliation
College of Chemistry, Jilin University, Changchun 130012, PR China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't