Determination of triazines and dealkylated and hydroxylated metabolites in river water using a propazine-imprinted polymer

A molecularly imprinted polymer (MIP) obtained by precipitation polymerisation using propazine as template has been employed as sorbent for the solid phase extraction of triazines and some of their hydroxylated and dealkylated metabolites from river water. Three configurations were studied: (a) use...

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Bibliographic Details
Published in:Journal of Chromatography A 2005-09, Vol.1085 (2), p.199-206
Main Authors: Carabias-Martínez, R., Rodríguez-Gonzalo, E., Herrero-Hernández, E.
Format: Article
Language:English
Subjects:
Alkylation
Analysis methods
Analytical chemistry
Analytical method
Applied sciences
Chemistry
Chromatographic methods and physical methods associated with chromatography
Chromatography, Liquid - methods
Exact sciences and technology
Fresh Water - chemistry
Hydroxylated and dealkylated metabolites
Hydroxylation
liquid chromatography
metabolites
Molecularly imprinted polymers
Natural water pollution
Other chromatographic methods
Pollution
polymers
Polymers - chemistry
propazine
Rivers
solid phase extraction
surface water
triazine herbicides
Triazines
Triazines - analysis
Triazines - chemistry
Triazines - metabolism
water analysis
water pollution
Water treatment and pollution
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Summary:A molecularly imprinted polymer (MIP) obtained by precipitation polymerisation using propazine as template has been employed as sorbent for the solid phase extraction of triazines and some of their hydroxylated and dealkylated metabolites from river water. Three configurations were studied: (a) use of the propazine-MIP as a selective sorbent for the extraction of triazines directly from water; (b) use of mixtures of LiChrolut EN (a polymeric sorbent of styrene divinylbenzene) and propazine-MIP as sorbent, and (c) use of propazine-MIP as a clean-up sorbent for organic extracts obtained in a prior SPE procedure with LiChrolut EN. The former two configurations imply that the analytes pass through the propazine-MIP in aqueous medium, whereas in the latter case the analytes percolate through the propazine-MIP in an organic medium coming from the previous SPE step. Different types of water were tested to assess matrix effects. The analytical characteristics of the three configurations were evaluated.
ISSN:0021-9673
DOI:10.1016/j.chroma.2005.05.084