Data correlation in on-line solid-phase extraction-gas chromatography-atomic emission/mass spectrometric detection of unknown microcontaminants
article
A procedure is described for the (non-target) screening of hetero-atom-containing compounds in tap and waste water by correlating data obtained by gas chromatography (GC) using atomic emission (AED) and mass selective (MS) detection. Solid-phase extraction (SPE) was coupled on-line to both GC systems to enable the determination of microcontaminants at the 0.02-1 μg L-1 level in 7-50 mL of aqueous sample. The screening was limited to compounds present in at least one heteroatom-selective GC-AED trace above a predetermined concentration level. These compounds were identified by their partial formulae (AED) and the corresponding mass spectra, which were obtained from the CC-MS chromatogram via the retention index concept. The potential of the approach was demonstrated by the identification of target compounds as well as all unknowns present in tap and waste water above the predetermined threshold of 0.05 μg L-1 (tap water) or 0.5 μg L-1 (waste water).
Topics
Aqueous samplesAtomic emission and MS detectionGas chromatographySolid-phase extractionDimpylateEthionFenclofosOrganophosphateOrganophosphate pesticidePhosphoric acid tris(2 chloroethyl) esterStirofosTap waterTriazophosAtomic emission spectrometryCalibrationDrug identificationGas chromatographyMass spectrometryPriority journalSolid phase extractionTechniqueWaste waterWater analysisWater contamination
TNO Identifier
234591
ISSN
00095893
Source
Chromatographia, 48(3-4), pp. 273-283.
Pages
273-283
Files
To receive the publication files, please send an e-mail request to TNO Repository.