Sensitive trace enrichment of environmental andiandrogen vinclozolin from natural waters and sediment samples using hollow-fiber liquid-phase microextraction
Φόρτωση...
Ημερομηνία
Συγγραφείς
Lambropoulou, D. A.
Albanis, T. A.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Journal of Chromatography A
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
The presence of vinclozolin in the environment as far as the endocrine disruption effects in biota are concerned has raised interest in the environmental fate of this compound. In this respect, the present study attempts to investigate the feasibility of applying a novel quantitative method, liquid-phase microextraction (LPME), so as to determine this environmental andiandrogen in environmental samples such as water and sediment samples. The technique involved the use of a small amount (3 muL) of organic solvent impregnated in a hollow fiber membrane, which was attached to the needle of a conventional GC syringe. The extracted samples were analyzed by gas chromatography coupled with electron-capture detection. Experimental LPME conditions such as extraction solvent, stirring rate, content of NaCl and pH were tested. Once LPME was optimized, the performance of the proposed technique was evaluated for the determination of vinclozolin in different types of natural water samples. The recovery of spiked water samples was from 80 to 99%. The procedure was adequate for quantification of vinclozolin in waters at levels of 0.010 to 50 mug/L (r > 0.994) with a detection limit of 0.001 mug/L (S/N = 3). Natural sediment samples from the Aliakmonas River area (Macedonia, Greece) spiked with the target andiandrogen compound were liquid-liquid extracted and analyzed by the methodology developed in this work. No significant interferences from the samples matrix were noticed, indicating that the reported methodology is an innovative tactic for sample preparation in sediment analysis, with a considerable improvement in the achieved detection limits. The results demonstrated that apart from analyte enrichment, the proposed LPME procedure also serves as clean-up method and could be successfully performed to determine trace amounts of vinclozolin in water and sediment samples. (C) 2004 Elsevier B.V. All rights reserved.
Περιγραφή
Λέξεις-κλειδιά
water analysis, sediment analysis, liquid phase microextraction, andiandrogen, endrocrine disruptor compounds, vinclozolin, chromatography-mass spectrometry, single-drop microextraction, organochlorine pesticides, membrane microextraction, solvent microextraction, fungicide vinclozolin, marine-sediments, male-rat, in-vivo, gas
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000225746500002
http://ac.els-cdn.com/S0021967304019260/1-s2.0-S0021967304019260-main.pdf?_tid=6e3be3079f6aecb368085ca29a8093c2&acdnat=1333023088_bb996fa6872e963677a35b8c86325ccb
http://ac.els-cdn.com/S0021967304019260/1-s2.0-S0021967304019260-main.pdf?_tid=6e3be3079f6aecb368085ca29a8093c2&acdnat=1333023088_bb996fa6872e963677a35b8c86325ccb
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