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Simultaneous Determination of Fluoroacetates, Chloroacetates, and Bromoacetates in Soil Samples by Ion Chromatography
Fang
Wang A,
Greg W.
Dicinoski A,
Yan
Zhu B,
Paul R.
Haddad A C
A
Australian Centre for Research on Separation Science, School of Chemistry, University of Tasmania, Private Bag 75, Hobart TAS 7001, Australia.
B
Department of Chemistry, Zhejiang University, Hangzhou 310028, China.
C
Author to whom correspondence should be addressed (e-mail: paul.haddad@utas.edu.au).
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Australian Journal of Chemistry 57(10) 1005–1010 http://dx.doi.org/10.1071/CH04067
Submitted: 12 March 2004
Accepted: 5 August 2004
Published online: 1 October 2004
Abstract
A comparative study was made of the chromatographic behaviour of nine haloacetic acids, namely mono-, di-, and tri-fluoroacetate (MFA, DFA, and TFA, respectively); mono-, di-, and tri-chloroacetate (MCA, DCA, and TCA, respectively); and mono-, di- and tri-bromoacetate (MBA, DBA, and TBA, respectively), employing anion-exchange chromatography with suppressed conductivity and UV detection, using a Dionex AS17 anion-exchange column employed with a potassium hydroxide gradient (via a Dionex EG40 Eluent Generator). All nine haloacetic acids were completely separated under the optimized gradient elution conditions, and use of selective detection methods or pretreatment with an OnGuard II Ag cartridge resulted in the elimination of interferences from chloride and bromide occurring in soil samples. The procedure for the simultaneous determination of the nine haloacetic acids was simple and rapid. The method detection limits for MFA, DFA, TFA, MCA, DCA, TCA, MBA, DBA, and TBA were 21, 40, 40, 28, 48, 86, 67, 55, and 160 μg L-1, respectively. Application of this method to the determination of haloacetic acids in real soil samples is illustrated.
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