Preconcentration and separation of haloacetic acids by ion chromatography.
A comparative study was made of the chromatographic behaviour of five haloacetic acids (mono-, dibromoacetic and mono-, di-, trichloroacetic acids). The techniques investigated included reversed-phase ion interaction chromatography with UV detection, suppressed and non-suppressed anion-exchange chromatography. The systems are discussed studying the retention as a function of the mobile phase parameters and the stationary phases used (LiChrospher 100 RP-18, IonPac AS9, AS10 and AS11). A preconcentration step, performed on different substrates, namely LiChrolut-EN and activated vegetal carbon, has been optimized in order to reduce the method detection limits. Results obtained for drinking water samples are shown.
Sarzanini
C
C
Department of Analytical Chemistry, University of Turin, Italy.
Bruzzoniti
M C
MC
Mentasti
E
E
D000085:Acetates / Q000032:analysis*; D000097:Acetonitriles / Q000737:chemistry; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D002852:Chromatography, Ion Exchange / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D000432:Methanol / Q000737:chemistry; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D012965:Sodium Chloride / Q000737:chemistry; D012997:Solvents / Q000737:chemistry; D014867:Water / Q000737:chemistry
D000085:Acetates; D000097:Acetonitriles; D002593:Cetrimonium Compounds; D000644:Quaternary Ammonium Compounds; D012997:Solvents; D014867:Water; D012965:Sodium Chloride; C006972:chloroacetic acid; C016274:bromoacetate; C009405:tetrabutylammonium; D000432:Methanol; C032159:acetonitrile; D000077286:Cetrimonium