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Abstract

A method is reported for the sensitive, simultaneous determination of mono- (MFA), di- (DFA), and trifluoroacetates (TFA) by ion chromatography (IC). These species were separated using a Dionex AS17 anion-exchange column employed with a potassium hydroxide gradient (via a Dionex EG40 eluent generator) and suppressed conductivity detection. The fluoroacetates were successfully separated from a range of inorganic and organic species likely to be present in environmental samples, in a total analysis time of 35 min (including re-equilibration of the column). Detection limits for mono-, di- and trifluoroacetate were 21, 38 and 36 μg/l, respectively, determined using a signal-to-noise ratio of 3, and were obtained using a sample injection volume of 50 μl. Precision was less than 0.83% relative standard deviation (RSD) for replicate injections performed over a period of 30 days. The method was applied to the determination of monofluoroacetate in river water samples and also in carrot baits.

Item Type:	Article
Authors/Creators:	Wang, Fang and Dicinoski, GW and Zhu, Y and Haddad, PR
Keywords:	Gradient elution; Environmental analysis; Fluoroacetates
Journal or Publication Title:	Journal of Chromatography A
ISSN:	0021-9673
DOI / ID Number:	https://doi.org/10.1016/j.chroma.2003.10.133
Additional Information:	The definitive version is available at http://www.sciencedirect.com
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