With the Gas Chromatography Single Capillarity Column Law Determining Carbon Six to Carbon Eight Aromatic Hydrocarbons in Remaining Oil

Remaining oil is surplus fraction of reformate oil after extraction aromatic hydrocarbon,in its component,besides aromatic hydrocarbon content is low,other is similar as general gasoline, composition quite is complex.In order to determine C6 to C8 aromatic hydrocarbon content in remaining oil,has developed one kind method for using capillarity column method analysis low-carbon aromatic hydrocarbon(the C6~C8 aromatic hydrocarbon): Using Aglient PONA nonpolar highly effective capillary chromatographic column,separates completely remaining oil component through multistage temperature program.Carries on qualitative analysis to benzene,the toluene,the xylene and ethylbenzene,using the pure material tracer technique;which has be prepared standard sample that remaining oil after extraction aromatic hydrocarbon mix with pure aromatic hydrocarbon,has solved problem of there is no place purchase standard sample in quantitative analysis.The experimental result indicated that,with this method analysis C6~C8 aromatic hydrocarbon in remaining oil to pick out density is low to 3×10-5;the standardization quantitative analysis relative deviation ≤8.5% using standard sample which prepares by oneself.The analysis result reproduction quality is good.