Reference standards for quantitative trace analysis of PCB's by GC. Technical PCB formulations for the calibration of ECD and MSD responses |
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| Authors: | J. Krupcík A. Kocan J. Petrík P. A. Leclercq K. Ballschmiter |
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| Affiliation: | (1) Faculty of Chemistry, Department of Analytical Chemistry, Slovak Technical University, Radlinského 9, 812 37 Bratislava, Slovakia;(2) Institute of Preventive medicine, Limbová 14, 833 01 Bratislava, Slovakia;(3) Department of Chemical Engineering, Laboratory of Instrumental Analysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands;(4) Department of Analytical and Environmental Chemistry, University of Ulm, 7900 Ulm, Germany |
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| Abstract: | Summary The composition of any technical PCB formulation can be determined directly by analyzing the PCB sample by gas chromatography with a flame ionization detector (GC-FID), provided the relative molecular masses of the components are known. The responses of electron capture and selected-ion monitoring, mass-spectra detectors can then be calibrated for individual PCB congeners by correlation of the chromatographic patterns with those of concentrated PCB samples obtained by GC-FID. This procedure, which uses a given technical PCB formulation as a secondary reference standard mixture, is to be preferred over existing calibration methods, when results with ±10% errors are acceptable because commercial PCB formulations cover the whole range of chlorination products. |
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| Keywords: | Capillary gas chromatography Polychlorinated biphenyls (PCBs) Quantitative analysis Detector response factors (FID, ECD, MS) |
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