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Bulterman, A.-J.; Vreuls, J.J.; Ghijsen, R.T.; Brinkman, U.A.Th., Selective and sensitive detection of organic contaminants in water samples by on-line trace enrichment-gas chromatography-mass spectrometry, J. Hi. Res. Chromatogr., 1993, 16, 7, 397-403, https://doi.org/10.1002/jhrc.1240160703 . [all data]
Kwakman, P.J.M.; Vreuls, J.J.; Brinkman, U.A.Th.; Ghijsen, R.T., Determination of organophosphorus pesticides in aqueous samples by on-line membrane disk extraction and capillary gas chromatography, Chromatographia, 1992, 34, 1/2, 41-47, https://doi.org/10.1007/BF02290457 . [all data]