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Capillary Liquid Chromatography of Chlorophenoxy Acid Herbicides and Their Esters in Apple Juice Samples After Preconcentration on a Cation Exchanger Based on polydivinylbenzene-N-vinylpyrrolidone

Capillary Liquid Chromatography of Chlorophenoxy Acid Herbicides and Their Esters in Apple Juice Samples After Preconcentration on a Cation Exchanger Based on polydivinylbenzene-N-vinylpyrrolidone

N Rosales-Conrado, M E León-González, L V Pérez-Arribas, L M Polo-Díez

J Chromatogr A. 2005 May 27;1076(1-2):202-6.

PMID: 15974090

Abstract:

A capillary liquid chromatography (cLC) method with gradient elution has been used to determine chlorophenoxy acid herbicides: 2,4-dichlorophenoxyacetic acid, 4-chloro-2-methylphenoxyacetic acid, 2-(2,4-dichlorophenoxy)propanoic acid, 2-(4-chloro-2-methylphenoxy)propanoic acid, 4-(2,4-dichlorophenoxy)butanoic acid, 4-(4-chloro-2-methylphenoxy)butanoic acid, 2-(2,4,5-trichlorophenoxy)propanoic acid, 2,4-dichlorophenoxyacetic-1-methyl ester and 2,4-dichlorophenoxyacetic-1-butyl ester in spiked apple juice samples with amounts between 0.025 and 0.150 mg kg(-1) of each herbicide. Clean-up and preconcentration of acid and esters were carried out in an Oasis MCX polymer. Detection limits obtained by cLC, between 0.005 and 0.018 mg kg(-1), allowed the determination of chlorophenoxy acids and their esters in apple juice samples around the levels permitted by the European Regulations, with recoveries in the range 84-99% and RSDs between 1 and 4%.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP94804	2,4-D 1-butyl ester		94-80-4	Price

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