Simultaneous determination of halogenated neutral and acidic disinfection by-products in drinking water by closed-loop stripping extraction and capillary gas chromatography.
The analytical capabilities of Grob closed-loop stripping analysis technique were evaluated for the determination, in drinking water, of trihalomethanes, haloacetonitriles, haloacetic acids, chloropicrin, halogenated ketones and chloral hydrate, reported as chlorination disinfection by-products. Thus by one-step enrichment and isolation procedure and subsequent analysis by capillary gas chromatography with electron-capture detection, organic polar and non-polar disinfection by-products could be analyzed at levels as low as 0.5 ng/l for trihalomethanes, 1 ng/l for haloacetonitriles and 45-72 ng/l for haloacetic acids.
Kampioti
A A
AA
Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Heraklion, Greece.
Stephanou
E G
EG
D002849:Chromatography, Gas / Q000379:methods*; D006219:Halogens / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D014881:Water Supply / Q000032:analysis*
D006219:Halogens