A method for selective isolation of nitrogen compounds from heavy oil was de-veloped via extraction/column chromatography. The nitrogen compounds in each subfractionwere identified by GC/MS and FTIR.

• 建立了萃取-柱色谱的预分离方法。对南京管输油中的含氮化合物进行了富集，并用GC／MS和红外光谱定性鉴定了所得的含氮化合物各组分。