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https://olympias.lib.uoi.gr/jspui/handle/123456789/7996Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Florou, A. B. | en |
| dc.contributor.author | Prodromidis, M. I. | en |
| dc.contributor.author | Karayannis, M. I. | en |
| dc.contributor.author | Tzouwara-Karayanni, S. M. | en |
| dc.date.accessioned | 2015-11-24T16:38:04Z | - |
| dc.date.available | 2015-11-24T16:38:04Z | - |
| dc.identifier.issn | 0003-2670 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/7996 | - |
| dc.rights | Default Licence | - |
| dc.subject | electrochemical determination of ascorbic acid | en |
| dc.subject | controlled porosity cellulose acetate film | en |
| dc.subject | beverages | en |
| dc.subject | pharmaceuticals | en |
| dc.subject | flow injection analysis | en |
| dc.subject | 2,6-dichlorophenolindophenol | en |
| dc.subject | chemically modified electrodes | en |
| dc.subject | electrocatalytic oxidation | en |
| dc.subject | cobalt phthalocyanine | en |
| dc.subject | sensor | en |
| dc.subject | zeolite | en |
| dc.title | Flow electrochemical determination of ascorbic acid in real samples using a glassy carbon electrode modified with a cellulose acetate film bearing 2,6-dichlorophenolindophenol | en |
| heal.type | journalArticle | - |
| heal.type.en | Journal article | en |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.identifier.secondary | <Go to ISI>://000085995900015 | - |
| heal.identifier.secondary | http://ac.els-cdn.com/S0003267000007091/1-s2.0-S0003267000007091-main.pdf?_tid=d20dcdedc239cf77178657fdb1c78710&acdnat=1333037108_e0946c434c712286a43dc63dca854d06 | - |
| heal.language | en | - |
| heal.access | campus | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.publicationDate | 2000 | - |
| heal.abstract | An ascorbate sensor based on a glassy carbon electrode modified with a cellulose acetate polymeric film bearing 2,6-dichlorophenolindophenol (CA/DCPI-CME) was constructed. The overall reaction obeys a catalytic regeneration mechanism (EC mechanism) and the electrochemical rate constant kf for the electrocatalytic oxidation of ascorbic acid was evaluated. The modified electrodes were mounted in a flow injection (FI) manifold, poised at +100 mV versus Ag/AgCl/3 M KCl at pH 6.5 and utilized for the determination of ascorbic acid in beverages and pharmaceuticals. Good correlation with a reference method was attained. Interferents of various molecular sizes were tested. Calibration graphs were linear over the range 0.02-1 and 0.1-6 mM ascorbic acid for CA/DCPI sensors hydrolyzed in KOH and ZnCl2 solution, respectively. The throughput was 25 samples per hour and the CV was for a 0.4 mM ascorbic acid solution 0.75 (n=14) and 1.2% (n=10) for CA/DCPI sensors hydrolyzed in KOH and ZnCl2 solution, respectively. The recovery was 92-110%. The sensors showed very good repeatability and operational stability. (C) 2000 Elsevier Science B.V. All rights reserved. | en |
| heal.publisher | Elsevier | en |
| heal.journalName | Analytica Chimica Acta | en |
| heal.journalType | peer reviewed | - |
| heal.fullTextAvailability | TRUE | - |
| Appears in Collections: | Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά). ΧΗΜ | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Prodromidis-2000-Flow Electrochemical determination.pdf | 169.21 kB | Adobe PDF | View/Open Request a copy |
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