摘要
用等体积的二硫化碳（CDS）与丙酮的混合溶剂萃取了准东次烟煤得到可溶物,然后依次用石油醚（PE）和CDS萃取该可溶物为PE萃取物（E1）和CDS萃取物（E2）.在硅胶层析柱中依次用PE和30％的CDS/PE对E2进行洗脱,富集了长链烷醛（LCNAs,C18～27）并用气相色谱/质谱联用仪分析了LCNAs.分级萃取和柱层析提供了从中低阶煤中富集LCNAs的有效方法.LCNAs可能是煤中重要的生物标志物.
Zhundong subbituminous coal was exhaustively extracted with isometric carbon disulfide （CDS） and acetone mixed solvent. The extract was fractionated with petroleum ether （PE） and CDS into PE-extractable portion （E1） and CDS-extractable portion （E2）. E2 was sequentially eluted with PE and 30% CDS/PE mixed solvent through a silica gel-packed column. A series of long-chain normal alkanals （LCNAs, C18-27 ） were enriched from E2 and identified with a gas chromatography/mass spectrometer. The fractional extraction and subsequent colunm chromatography provide an effective approach for enriching LCNAs from middle- and low-rank coals. LCNAs could be a class of important biomarkers.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2014年第3期257-261,共5页
Journal of Fuel Chemistry and Technology
基金
National Basic Research Program of China(973 Program,2011CB201302)
the Key Project of Natural Science Foundation of China(20936007)
the Fund from Natural Science Foundation of China for Innovative Research Group(51221462)
the Key Project of Coal Joint Fund from Natural Science Foundation of China and Shenhua Group Corporation Limited(51134021)
The Strategic Chinese-Japanese Joint Research Program(2013DFG60060)
National Natural Science Foundation of China(51074153)
National Natural Science Foundation of China for Young Researchers(21206187 and 21206188)
the Priority Academic Program Development of Jiangsu Higher Education Institutions
关键词
长链烷醛
准东次烟煤
分级萃取
柱层析
long-chain normal alkanals
Zhundong subbituminous coal
fractional extraction
column chromatography
