二维气相色谱技术.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Two-dimensional Gas Chromatographic Technique,2011.4.10,Course,:,separation analytical chemistry,Content,Introduction,Applications,Outlook,Characteristics,Basic methods,1.Introduction,Aim,Separation,of complex,samples,Single column,Two columns,1 S.L.zhang,M.Sep.Synthetic lubricant.5(1994)12.,2.Basic methods,column,detector,injector,3.Characteristics,Advantages,B,E,C,D,A,High,sensitivity,Quickly,Simplicity of operation,Economy,High selectivity,4.Applications,2,J.w,Li,Y Li,C Wang,Chinese Journal of Chromatography 27(2009)346.,Figure 1.F,lowsheet,of GC+GC,4.1 An Example,Damping column,Column 1,Column 2,Electromagnetic switch valve,Damping tube,3 R.Gras,J.Luong,J.Chromatogr.A 1216(2009)2776.,The measurement of Alkyl mercaptans in natural gas,Agilent 6890 N,Figure 2.GC+GC chromatograph with,Capillary micro,flow control technology,Capillary,microflow,control valve make the,capaillary,columns close to each other,apparatus,A detection limit:200ppb(methyl mercaptan),Correlation coefficient:better than 0.9994,More complex substances,?,Improve sensitivity,Reduce cost,Improve efficient,5.Outlook,Deans Switch,Column,Bear high-temperature,Separate faster,Detector,Easier to operate,Welcome to your corrections！,Thank you,