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准东次烟煤中长链烷醛的富集与分析

, PP. 257-261

Keywords: 长链烷醛,准东次烟煤,分级萃取,柱层析

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Abstract:

?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。

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