Automated determination of asulam by enhanced chemiluminescence using luminol/peroxidase system |
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Authors: | Francisco García Sánchez Aurora Navas Díaz Visitación Bracho Alfonso Aguilar Manuel Algarra |
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Affiliation: | Department of Analytical Chemistry, Faculty of Sciences. University of Málaga. Campus de Teatinos s/n. 29071 Málaga, Spain |
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Abstract: | A flow injection system with chemiluminescence detection for the determination of asulam, enhancer of the system luminol–H2O2–horseradish peroxidase, is proposed. The method shows a moderate selectivity against other pesticides usually present in formulations of herbicides and in water. The procedure was applied to the determination of asulam in tap water samples and a recovery study was carried out in order to validate the method. The obtained results show acceptable recovery values (between 88.3 and 93.9%). The detection limit for asulam was 0.12 ng/mL. The precision of the method expressed as relative standard deviation was 1.55% (n = 8), at the 19 ng/mL level. Copyright © 2009 John Wiley & Sons, Ltd. |
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Keywords: | chemiluminescence asulam luminol enhancers flow injection analysis carbamate pesticide |
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