Document Detail


Regeneration of poly-L-lysine modified carbon electrodes in the accumulation and cathodic stripping voltammetric determination of the cromoglycate anion.
MedLine Citation:
PMID:  18969128     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Cromoglycate is accumulated on a poly-L-lysine (PLL) modified carbon electrode best from pH 4 solution, where it is anionic and the PLL is cationic, and at which pH the cromoglycate gives a good reduction peak at -0.82 V. The PLL film can be regenerated readily by washing the electrode with 3 M sodium hydroxide solution, in which the PLL is deprotonated. Regeneration of the film is not required as frequently when larger amounts of PLL are incorporated into it. This allows standard addition procedures to be carried out without regenerating the electrode. Linear calibration graphs have been obtained typically in the range 0.1-1.5 microg ml(-1). Detection limits have been calculated to be 10 ng ml(-1). The standard addition method has been applied satisfactorily to diluted urine solutions.
Authors:
F C Pereira; A G Fogg; M V B Zanoni
Related Documents :
23005328 - Anomalous dielectric behavior of nanoconfined electrolytic solutions.
18837458 - Sputtered iridium oxide films for neural stimulation electrodes.
18001068 - Polyaniline langmuir-blodgett film based cholesterol biosensor.
21110348 - Pyrolytic carbon from an aromatic precursor and its application as a counter electrode ...
23291228 - Interaction of carboxylated single-walled carbon nanotubes with bovine serum albumin.
16793348 - A simple method to fabricate a chitosan-gold nanoparticles film and its application in ...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Talanta     Volume:  60     ISSN:  1873-3573     ISO Abbreviation:  Talanta     Publication Date:  2003 Jul 
Date Detail:
Created Date:  2008-10-30     Completed Date:  2009-12-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984816R     Medline TA:  Talanta     Country:  England    
Other Details:
Languages:  eng     Pagination:  1023-32     Citation Subset:  -    
Affiliation:
Departamento de Quimica Analitica, Instituto de Quimica, Universidade Estadual Paulista, Araraquara, SP, Brazil.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Routine high-performance liquid chromatographic determination of ascorbic acid in foods using l-meth...
Next Document:  Spectrofluorometric determination of certain quinolone antibacterials using metal chelation.