Abstract
Abstract Dealkylated degradation products of atrazine, dealkyl- and deisopropyl-atrazine have been now detected in environmental waters, but determination of hydroxyatrazine has not been reported just because this product is not amenable to GC-MS. An analytical procedure has been developed for the simultaneous trace-level determination of some widely used chorotriazines and of three main degradation products, deisopropyl-, deethyl- and hydroxyatrazine, using a selective solid-phase-extraction coupled on-line to liquid chromatography. The preconcentration has been carried out with two precolumns in series. The first one, packed with the PRP-1 sorbent allowed the preconcentration of hydroxyatrazine and other metabolites. Analytes of interest were then desorbed from the PRP-1 precolumn in their ionic form and transferred to a second precolumn packed with a cation exchanger, which was afterwards coupled on-line to an analytical C18 column. The use of the selective cation-exchanger sorbent for the preconcentra...
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More From: International Journal of Environmental Analytical Chemistry
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