On-line derivatization coupled to flow injection permanganate chemiluminescence detection of total carbonyl compounds in natural waters and drinking water
Φόρτωση...
Ημερομηνία
Συγγραφείς
Giokas, D. L.
Tsogas, G. Z.
Vlessidis, A. G.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Elsevier Masson
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Analytica Chimica Acta
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
This work describes the development of a fast assay for the determination of low molecular weight carbonyl compounds based on the oxidative chemiluminescence of 2,4-dinitrophenylhydrazine with acidic permanganate, which is enhanced during conversion to the corresponding phenylhydrazone-carbonyl derivatives. By exploiting the common derivatization pathway and oxidation mechanism of phenylhydrazones under kinetically controlled conditions in a flow configuration, a common light emission is produced which corresponds to the total aqueous concentration of carbonyl compounds. The experimental conditions that afford the optimum analytical features were optimized for acetone, acetaldehyde and formaldehyde which constitute the most abundant carbonyl compounds in environmental samples. The method was successfully applied to the determination of total carbonyl content in natural waters and drinking water at the low mu g L(-1) levels with satisfactory recoveries (94.0-99.5%) and very good reproducibility (RSD = 1.58-2.99%, n = 8, C = 2 mu g L(-1)). Validation of the results was performed with gas chromatography Suggesting that the proposed method provides a fast alternative to the routine screening of low molecular weight carbonyl compounds in natural waters. (C) 2009 Elsevier B.V. All rights reserved.
Περιγραφή
Λέξεις-κλειδιά
carbonyl compounds, chemiluminescence, flow injection, permanganate oxidation, water samples, performance liquid-chromatography, acidic potassium-permanganate, oxidative chemiluminescence, pharmaceutical excipients, gas-chromatography, mass spectrometry, bottled waters, gc-ms, lc-ms, formaldehyde
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000270745600008
http://ac.els-cdn.com/S0003267009011398/1-s2.0-S0003267009011398-main.pdf?_tid=fc98284a-356a-11e3-bdbc-00000aacb35e&acdnat=1381822117_9bc5ba26401cec71d9a258b03d076e63
http://ac.els-cdn.com/S0003267009011398/1-s2.0-S0003267009011398-main.pdf?_tid=fc98284a-356a-11e3-bdbc-00000aacb35e&acdnat=1381822117_9bc5ba26401cec71d9a258b03d076e63
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας