Identification and determination of chlorinated paraffins using multivariate evaluation of gas chromatographic data.
Chlorinated paraffins (CPs) were found in the biodegradable fraction of source separated waste from Uppsala, Sweden. We identified and quantified the CPs by multivariate evaluation of gas chromatography-electron capture detection chromatograms. Using principal component analyses (PCA) we identified different types of CP-formulations and also obtain quantitative data. PCA yielded better identifications of individual CP-formulations than visual comparison of chromatograms. Partial least squares regression gave good calibration curves of the standards, but did not work for the waste samples. No source of CPs could be identified in the waste collection chain, and as the waste samples seemed to contain at least two different CP-formulations the source was probably to be found in the waste material itself. The method was used to determine CPs in additional environmental samples, demonstrating that multivariate methods may be developed into a powerful tool for identification and quantification of complex mixture.
Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, SE-75007 Uppsala, Sweden.
Marie-Louise
ML
Nilsson
Staffan
S
Bengtsson
Henrik
H
Kylin
D001673:Biodegradation, Environmental; D002849:Chromatography, Gas; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000032:analysis / Q000737:chemistry*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis / Q000737:chemistry*; D015999:Multivariate Analysis; D010232:Paraffin / Q000032:analysis / Q000737:chemistry*; D025341:Principal Component Analysis; D012037:Refuse Disposal; D013548:Sweden; D014866:Waste Products / Q000706:statistics & numerical data*
D004785:Environmental Pollutants; D006843:Hydrocarbons, Chlorinated; D014866:Waste Products; D010232:Paraffin