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Automated determination of asulam by enhanced chemiluminescence using luminol/peroxidase system
Author(s) -
Sánchez Francisco García,
Díaz Aurora Navas,
Bracho Visitación,
Aguilar Alfonso,
Algarra Manuel
Publication year - 2009
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.1137
Subject(s) - chemiluminescence , luminol , detection limit , relative standard deviation , chemistry , chromatography , tap water , peroxidase , horseradish peroxidase , flow injection analysis , organic chemistry , environmental science , enzyme , environmental engineering
A flow injection system with chemiluminescence detection for the determination of asulam, enhancer of the system luminol–H 2 O 2 –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.