2009-2015
- C. Oellig, W. Schwack: Planar solid phase extraction clean-up and microliter-flow injection analysis–time-of-flight mass spectrometry for multi-residue screening of pesticides in food, Journal of Chromatography A 1351 (2014), 1-11
- C. Oellig, W. Schwack: Planar solid phase extraction clean-up for pesticide residue analysis in tea by liquid chromatography–mass spectrometry, Journal of Chromatography A 1260 (2012), 42-53
- C. Oellig, W. Schwack: Planar solid phase extraction – A new clean-up concept in multi-residue analysis of pesticides by liquid chromatography–mass spectrometry, Journal of Chromatography A 1218 (2011), 6540-6547
- G. E. Morlock, C. Oellig, L. W. Bezuidenhout, M. J. Brett, W. Schwack: Miniaturized planar chromatography using office peripherals, Analytical Chemistry 82 (2010), 2940-2946
- G. E. Morlock, C. Oellig: Rapid planar chromatographic analysis of 25 water-soluble dyes used as food additives, Journal of AOAC International 92 (2009), 745-756