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HPTLC determination of sibutramine in adulterated herbal slimming supplements Mathon, Caroline; Ankli, Anita; Reich, Eike; Bieri, Stefan; Christen, Philippe 2014
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Survey of pyrrolizidine alkaloids in teas and herbal teas on the Swiss market using HPLC-MS/MS Mathon, Caroline; Edder, Patrick; Bieri, Stefan; Christen, Philippe 2014
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Unexpected Occurrence of Caffeine in Sleep-Inducing Herbal Teas Mathon, Caroline; Edder, Patrick; Christen, Philippe; Bieri, Stefan 2014
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Screening and determination of sibutramine in adulterated herbal slimming supplements by HPTLC-UV densitometry Mathon, Caroline; Ankli, Anita; Reich, Eike; Bieri, Stefan; Christen, Philippe 2014
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Multi-targeted screening of botanicals in food supplements by liquid chromatography with tandem mass spectrometry Mathon, Caroline; Duret, M.; Kohler, Marcel; Edder, Patrick; ... Christen, Philippe 2013
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Analysis of the neurotoxin anisatin in star anise by LC-MS/MS Mathon, Caroline; Bongard, Benjamin; Duret, Monique; Ortelli, Didier; ... Bieri, Stefan 2013
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High-precision heteronuclear 2D NMR experiments using 10-ppm spectral window to resolve carbon overlap Vitorge, Bruno; Bieri, Stefan; Humam, Munir; Christen, Philippe; ... Jeannerat, Damien 2009
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Analysis of tropane alkaloids in biological matrices Christen, Philippe; Bieri, Stefan; Veuthey, Jean-Luc 2008
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Quality of life and social integration after allogeneic hematopoietic SCT Bieri, Stefan; Roosnek, Eddy Emile; Helg, C.; Verholen, F.; ... Chalandon, Yves 2008
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Focused microwave-assisted extraction combined with solid-phase microextraction and gas chromatography-mass spectrometry for the selective analysis of cocaine from coca leaves Bieri, Stefan; Ilias, Yara; Bicchi, Carlo; Veuthey, Jean-Luc; Christen, Philippe 2006
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Use of porous graphitic carbon column for the separation of natural isomeric tropane alkaloids by capillary LC and mass spectrometry Bieri, Stefan; Varesio, Emmanuel; Muñoz, Orlando; Veuthey, Jean-Luc; Christen, Philippe 2006
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Cocaine distribution in wild Erythroxylum species Bieri, Stefan; Brachet, Anne; Veuthey, Jean-Luc; Christen, Philippe 2006
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Analysis of isomeric tropane alkaloids from Schizanthus grahamii by very fast gas chromatography Bieri, Stefan; Muñoz, Orlando; Veuthey, Jean-Luc; Christen, Philippe 2006
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Identification of isomeric tropane alkaloids from Schizanthus grahamii by HPLC-NMR with loop storage and HPLC-UV-MS/SPE-NMR using a cryogenic flow probe Bieri, Stefan; Varesio, Emmanuel; Veuthey, Jean-Luc; Muñoz, Orlando; ... Christen, Philippe 2006
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Evaluation of solid-phase microextraction desorption parameters for fast GC analysis of cocaine in coca leaves Ilias, Yara; Bieri, Stefan; Christen, Philippe; Veuthey, Jean-Luc 2006
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Separation of four isomeric tropane alkaloids from Schizanthus grahamii by non-aqueous capillary electrophoresis Humam, M.; Bieri, Stefan; Geiser, Laurent; Muñoz, O.; ... Christen, Philippe 2005