columnless gc/ims (ii) - B & S Analytik GmbH
columnless gc/ims (ii) - B & S Analytik GmbH
columnless gc/ims (ii) - B & S Analytik GmbH
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IJIMS 5(2002)2,160-174, p. 169S&S filterpaper #404SKCCellulose pad20.00Retention Time (sec)15.0010.00M8A2000teflon padHeroinCocaineMethamp.Heroin(tef)5.000.000 0.2 0.4 0.6 0.8 1Thickness of Material Over (mm)Figure 6. Average Retention Time of Methamphetamine, Cocaine And HeroinVersus The Thickness of Different Materials Added Over The SampleFilter PaperCH 3NOCHOHCH 3NOCOCH 3HOHHEcgonineEDMEFigure 7. Chemical Structures of Ecgonine and EDME
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