Determination of Low-Molecular-Mass Aldehydes in Water Samples by Liquid Chromatography and Chemiluminescence Detection Using Continuous in situ Derivatization/Preconcentration with Dansylhydrazine
2009; Taylor & Francis; Volume: 42; Issue: 10 Linguagem: Inglês
10.1080/00032710902954474
ISSN1532-236X
AutoresClara Eugenia Baños, Manuel Silva,
Tópico(s)Indoor Air Quality and Microbial Exposure
ResumoAbstract A simple, expeditious, and sensitive method has been developed for the determination of low-molecular-mass aldehydes in water samples by liquid chromatography and peroxyoxalate–chemiluminescence detection. The method is based on continuous solid-phase extraction with in situ derivatization/preconcentration of the aldehydes using dansylhydrazine, which was first adsorbed on an RP–C18 mini-column. For 10 mL of aqueous sample, the limits of detection (LOD) for C1 to C4 aldehydes were 20–30 ng L−1, except for formaldehyde, which had an LOD of 400 ng L−1. Application was illustrated by the determination of these aldehydes in water samples; the interday precision was always less than ca. 7%, and relative recoveries were more than 96%.
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