A simple clean-up procedure for the quantitative determination of PCBs in complex materials

Roerden, O.; Reisinger, K.; Leymann, W.; Frischkorn, C. B. G.

doi:10.1007/bf00469462

Cited by 16 publications

(3 citation statements)

References 7 publications

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“…It is interesting to note that similar PCB distributions were also found in human milk and butter [5], soil [4], sediments [10], and water [11]. Quite differently, the concentrations of tri-to pentachlorinated biphenyls were much higher than those of the hexa-or heptachlorinated species in transformer oil, heating oil and waste oil [10].…”

Section: Distribution Of the Pcb Concentrations In Street Dustmentioning

confidence: 79%

“…Because of their toxicity and chemical and physical stability in the environment [2], the production of PCBs was forbidden in the late 70's (USA) and early 80's (Europe). However, PCBs have been found to exist in biological samples and foods, including milk products, fish and eggs [3][4][5][6], and in environmental samples such as air particulate matter [7], oil [8][9][10], water [11], sediments [4,10,12], and soils [4,13,14].…”

Section: Introductionmentioning

confidence: 99%

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Study of polychlorinated biphenyls in street dust by supercritical fluid extraction-gas chromatography/mass spectrometry

Yang

Baumann

1996

Fresenius' Journal of Analytical Chemistry

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Street dust samples have been collected from highways, urban streets, a gasoline station, a pedestrian tunnel, and railway stations in some German cities. Nine polychlorinated biphenyls (PCBs from tri-to heptachlorobiphenyls) were quantitatively extracted by supercritical fluid extraction with CO 2 at 200 bar and 40°C and analyzed by gas chromatography/mass spectrometry. The highest PCB loads (sum of the nine studied PCBs) of ca. 1 to 4 µg/g have been found in the samples from motorway A60 near Mainz, while in almost all other samples PCBs could be detected at only ca. 0.1 to 1 µg/g. At three sampling sites, a winter maximum of the PCB concentrations has been found.

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Section: Distribution Of the Pcb Concentrations In Street Dustmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Study of polychlorinated biphenyls in street dust by supercritical fluid extraction-gas chromatography/mass spectrometry

Yang

Baumann

1996

Fresenius' Journal of Analytical Chemistry

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“…The extract was evaporated to nearly 20 ml in an ice bath under NZ gas and then filled up to 25 ml with n-hexane. The further sample preparation was made according to ROERDEN et al (1989). Two empty 1 ml solid phase extraction cartridges (Bond Elm, Analytichem, USA) were filled with 5 cm silica gel (70-230 mesh, water content 5.6 W(wlw), suspended in n-hexane) and 2.5 cm silica gel (> 230 mesh, water content 6.3 %(w/w), suspended in n-hexane) respectively.…”

Section: Pcb Extraction and Analysismentioning

confidence: 99%

Microbial degradation of polychlorinated biphenyls in contaminated soil

et al. 1993

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The potential of microbial degradation of PCB in contaminated actual site soil was investigated by incubation in percolation columns for 10 months. The addition of traces of mineral salts and nutrients resulted in a significant increase of the degradation of PCB congeners up to 5 Cl-atoms caused by the naturally occurring bacteria in the soil matrix. If only tap water was recycled the degree of PCB degradation was negligible.

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GC‐MS analysis of the PCB substitute Ugilec 141 and its occurrence in waste mineral oils

Velde

Linders

Wammes

et al. 1995

J. High Resol. Chromatogr.

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After the restrictions on production and use of PCBs, Ugilec 141, a technical mixture of dichlorobenzyldichlorotoluenes (DBDTs), has been used as a PCB substitute in hydraulic systems. In the Netherlands, the production, import and use of Ugilec 141 has been forbidden since 1988. A method has been developed for the analysis of Ugilec 141 in waste mineral oils to control waste oil import and processing. The method development was based on modification of procedures for the analysis of PCBs in oil and dioxins in fatty matrices and analysis was performed with gas chromatography with mass spectrometry. For sample clean‐up, several combinations of column chromatography with activated carbon, alumina, and silica gel have been tested to obtain extracts free from matrix interferences. An internal standard of 13C‐labeled DBDT was examined to check recoveries from the clean‐up procedures. Quantification was performed by comparison with the six most abundant peaks of an external Ugilec 141 standard mixture. Validation experiments showed a linear range from 0.25 to 60 mg Ugilec 141 kg−1 oil, a reproducibility of 3% and a limit of determination of 0.25 mg Ugilec 141 kg−1 waste oil. The method was applied in a survey of 70 samples of waste mineral oils from producers all over the Netherlands; this revealed levels below the limit of determination and one positive sample with a concentration of 5.7±0.1 mg Ugilec 141 kg−1 oil. In an inspection inquiry, one contaminated oil was found containing 116 ± 9 g Ugilec 141 kg−1 oil.

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A simple clean-up procedure for the quantitative determination of PCBs in complex materials

Cited by 16 publications

References 7 publications

Study of polychlorinated biphenyls in street dust by supercritical fluid extraction-gas chromatography/mass spectrometry

Study of polychlorinated biphenyls in street dust by supercritical fluid extraction-gas chromatography/mass spectrometry

Microbial degradation of polychlorinated biphenyls in contaminated soil

GC‐MS analysis of the PCB substitute Ugilec 141 and its occurrence in waste mineral oils

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