Development of 1-(2-pyridylazo)-2-naphthol-modified polymeric membranes for the effective batch pre-concentration and determination of zinc traces with flame atomic absorption spectrometry
Φόρτωση...
Ημερομηνία
Συγγραφείς
Giokas, D. L.
Paleologos, E. K.
Prodromidis, M. I.
Karayannis, M. I.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Elsevier
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Talanta
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
The development of 1-(2-pyridylazo)-2-naphthol (PAN)-modified polymeric membranes for the effective batch pre-concentration and determination of zinc traces with flame atomic absorption spectrometry (FAAS) is described. The method is based on the chemical bonding of the metal species with a suitable ligand, which has been immobilized into a water-insoluble cellulose acetate (CA) membrane followed by simple rinsing of the chelating agent-metal complex with an acidified methanolic solution. The latter is directly aspirated to the nebulizer of a FAA spectrophotometer without any other treatment. As an analytical demonstration, trace concentrations of Zn(II) were successfully detected in real samples, such as seawater, river and take water, wastewater as well as in a reference material, without any laborious and time-consuming treatment. Several working parameters were investigated. A pre-concentration factor of 100 was achieved by simple immersing of a circular piece of the CA-PAN membrane (0.6 cm diameter) in the tested samples for 30 min at room temperature. The analytical curve was rectilinear up to 30 mug l(-1) zinc with detection limit of 0.7 mug l(-1), a quantitation limit of 2.0 mug l(-1) and a relative standard deviation lower than 2%. (C) 2002 Elsevier Science B.V. All rights reserved.
Περιγραφή
Λέξεις-κλειδιά
1-(2-pyridylazo)-2-naphthol-modified cellulose acetate membranes, pre-concentration, zinc determination, seawater and wastewater, flame atomic absorption spectrometry, automated online preconcentration, plasma-mass spectrometry, water samples, sea-water, extraction, adsorption, speciation, separation, iron(ii), chromium
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000174751800013
http://ac.els-cdn.com/S0039914001005720/1-s2.0-S0039914001005720-main.pdf?_tid=cccee7da-349c-11e3-b3b3-00000aacb360&acdnat=1381733560_ad437f6d53fbb95cefd54717d07a991f
http://ac.els-cdn.com/S0039914001005720/1-s2.0-S0039914001005720-main.pdf?_tid=cccee7da-349c-11e3-b3b3-00000aacb360&acdnat=1381733560_ad437f6d53fbb95cefd54717d07a991f
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