On the use of reference standards for quantitative trace analysis of PCBs by HRGC. Analyses of technical PCB formulations by HRGC/FID

Krupčík, J.; Kočan, Anton; Petrı́k, Ján; Leclercq, PA Piet; Ballschmiter, Karlheinz

doi:10.1007/bf02262241

Cited by 26 publications

(10 citation statements)

References 8 publications

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Section: Resultsmentioning

confidence: 98%

“…To identify peaks in these chromatograms, systematic PCB numbering according to 13allschmiter et al [8] was used, as described for GC-FID chromatograms [7]. The very good agreement for the corresponding chromatograms, obtained by from Aroclor 1242 and Aroclor 1260 with GC-FID [7] and GC-ECD (Figures 1 and 2), allowed straight forward Correlation. Knowing the major constituent composition of Aroclor 1242 and 1260 as previously determined [7], mass responses (R), mass response factors (RF) and relative mass response factors (RRF) were calculated for the major PCB congeners found in Aroclor 1242 and 1260.…”

Section: Resultsmentioning

confidence: 98%

“…In a previous paper [7] tions by GC-FID [7]. To identify peaks in these chromatograms, systematic PCB numbering according to 13allschmiter et al [8] was used, as described for GC-FID chromatograms [7].…”

Section: Resultsmentioning

confidence: 99%

“…The composition of overlapping congeners, differing in the number of chlorine atoms, was determined by GC-MS-SIM (see below). This, however, was not considered in Tables I and II, where for all Overlapping peaks only one RRF is given as determined from the detector responses and the corresponding contents in Aroclor 1242 or 1260 [7].…”

Section: Resultsmentioning

confidence: 99%

“…In a previous paper [7] we described a new procedure to derive, from any technical PCB formulation, a secondary reference standard mixture suitable for calibration. The aim of this paper is to report experience of those secondary reference standards for calibration of ECD, MS-TIC and MS-SIM responses.…”

Section: Introductionmentioning

confidence: 99%

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Reference standards for quantitative trace analysis of PCB's by GC. Technical PCB formulations for the calibration of ECD and MSD responses

et al. 1993

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SummaryThe 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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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reference standards for quantitative trace analysis of PCB's by GC. Technical PCB formulations for the calibration of ECD and MSD responses

et al. 1993

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PCB separation by HRGC‐MS. Fourier analysis for characterizing Aroclor chromatograms

Pietrogrande

Pasti

Dondi

et al. 1994

J. High Resol. Chromatogr.

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SummaryAroclor and Aroclor mixture chromatograms obtained using temperature programmed high resolution capillary GC coupled with mass spectrometric selective detection have been investigated by Fourier analysis developed for the study of multicomponent chromatograms. The experimental autocorrelation function (EACF), i.e. peak shape and position correlation, showed a retention -structure pattern which could be associated with both the type of Aroclor and the ion used for selective ion monitoring (dzvalue). In particular, e m and m m isomerization effects were singled out by EACF analysis. By fitting EACF with previously developed theoretical models, it was possible to characterize a specific Aroclor in terms of the number of PCB congeners present in it. The results obtained agreed closely with the typical Aroclor content. For the Aroclor mixture, the distribution of inter-distance between successive peaks was derived. The two first distribution moments obtained agreed with those derived from retention data reported in the literature. The consequences on the separation performance, i.e. the number of singlets, doublets, etc. in the chromatogram, are discussed.

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Evaporation kinetics of polychorinated biphenyls during biodegradation experiments

1996

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During microbial degradation of polychlorinated biphenyls (PCB) in liquid media two processes take place simultaneously: elimination of PCB and evaporation of PCB. The physical loss of PCB due to evaporation causes frequently false positive results in long4erm biodegradation experiments.Therefore, if only the PCB concentration is to be measured, its determination in both liquid and gaseous phase is essential for a correct appraisal of biodegradation. The kinetics of PCB evaporation have been monitored and the evaporation rate constants for individual PCB congeners have been determined. The values of evaporation rate constants show a good corelation with the values of the 1 -octanol/water partition coefficient.

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On the use of reference standards for quantitative trace analysis of PCBs by HRGC. Analyses of technical PCB formulations by HRGC/FID

Cited by 26 publications

References 8 publications

Reference standards for quantitative trace analysis of PCB's by GC. Technical PCB formulations for the calibration of ECD and MSD responses

Reference standards for quantitative trace analysis of PCB's by GC. Technical PCB formulations for the calibration of ECD and MSD responses

PCB separation by HRGC‐MS. Fourier analysis for characterizing Aroclor chromatograms

Evaporation kinetics of polychorinated biphenyls during biodegradation experiments

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