Nonaqueous catalytic fluorometric trace determination of vanadium based on the pyronine B-hydrogen peroxide reaction and flow injection after cloud point extraction
| dc.contributor.author | Paleologos, E. K. | en |
| dc.contributor.author | Koupparis, M. A. | en |
| dc.contributor.author | Karayannis, M. I. | en |
| dc.contributor.author | Veltsistas, P. G. | en |
| dc.date.accessioned | 2015-11-24T16:42:49Z | |
| dc.date.available | 2015-11-24T16:42:49Z | |
| dc.identifier.issn | 0003-2700 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/8603 | |
| dc.rights | Default Licence | - |
| dc.subject | sensitive spectrophotometric determination | en |
| dc.subject | atomic-absorption spectrometry | en |
| dc.subject | electron-spin-resonance | en |
| dc.subject | thermometric determination | en |
| dc.subject | kinetic determination | en |
| dc.subject | gallic acid | en |
| dc.subject | oxidation | en |
| dc.subject | samples | en |
| dc.subject | bromate | en |
| dc.subject | speciation | en |
| dc.title | Nonaqueous catalytic fluorometric trace determination of vanadium based on the pyronine B-hydrogen peroxide reaction and flow injection after cloud point extraction | en |
| heal.abstract | The catalytic effect of vanadium on the pyronine B-H2O2 system is examined. Enhancement of the catalytic reaction rate along with the efficiency and selectivity against vanadium is achieved in a formic acid environment in the presence of a nonionic surfactant (Triton X-114). Elimination of drastic interference caused by inorganic acids and aqueous matrix along with a 50-fold preconcentration of vanadium are facilitated through cloud point extraction of its neutral complex with 8-quinolinol in an acidic solution. Subsequent flow injection analysis (FIA) with fluorometric detection renders the proposed method ideal for selective and cost-effective determination of as little as 0.020 mug L-1 vanadium in environmental, biological, and food substrates. The preconcentration step can be applied simultaneously to multiple samples, allowing for massive preparation prior to analysis, compensating, thus, for the time-consuming procedure. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | <Go to ISI>://000171044600006 | - |
| heal.identifier.secondary | http://pubs.acs.org/doi/pdfplus/10.1021/ac010395k | - |
| heal.journalName | Anal Chem | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2001 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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