Recent methods for the determination of volatile and non-volatile organic compounds in natural and purified drinking water.
Four analytical protocols for the extraction and preconcentration of organic residues in natural or purified drinking water were investigated and compared: closed loop stripping analysis; simultaneous extraction-distillation; purge and trap analysis; continuous liquid-liquid extraction. Organic extracts were submitted to a variety of separation and identification techniques. Volatiles were determined by conventional capillary column gas chromatography with tandem mass spectrometry, using triple-stage quadrupole instruments. Non-volatile and thermally labile molecules were investigated by several different techniques (high-temperature gas chromatography, capillary column supercritical fluid chromatography, pyrolysis gas chromatography-mass spectrometry, thermospray liquid chromatography with tandem mass spectrometry and conventional fast-atom bombardment with tandem mass spectrometry). Several samples recently examined in the laboratory provide examples of this multitechnique approach for a more complete knowledge of the organic carbon distribution in water-dissolved organic matter, taking into account organic substances with widely different volatilities, polarities and thermal stabilities.
Bruchet
A
A
Société Lyonnaise des Eaux, Centre de Recherche, Le Pecq, France.
Legrand
M F
MF
Arpino
P
P
Dilettato
D
D
D002712:Chlorides / Q000032:analysis; D002849:Chromatography, Gas; D002850:Chromatography, Gel; D013058:Mass Spectrometry; D012997:Solvents / Q000032:analysis; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014280:Triglycerides / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
D002712:Chlorides; D012997:Solvents; D014280:Triglycerides; D014874:Water Pollutants, Chemical