煤直接液化残渣中易致癌致畸多环芳烃类化合物的分离分析

Separation and analysis of polycyclic aromatic hydrocarbons in direct coal liquefaction residues

煤液化残渣是煤炭清洁转化的副产物,其成分中含有多种芳香类化合物以及杂原子化合物。利用溶剂萃取技术,结合气相色谱、质谱分析,对煤液化残渣中的多环芳烃的种类与分布进行研究。结果表明,煤液化残渣正己烷萃取物中检测到18种芳香族化合物,其中7,12-二甲基苯并[a]蒽、苯并[a]芘、茚并[1,2,3-c,d]芘、苯并[ghi]苝等具有强致癌致畸性。

Coal liquefaction residue is a byproduct from clean conversation of coal,consisting of various polycyclic aromatic hydrocarbons and heteroatom-containing compounds.Solvent extraction technology combining with gas chromatography/mass spectrometry is applied to investigate the species and distribution of polycyclic aromatic hydrocarbons in coal liquefaction residue.It is indicated that 18 kinds of aromatic compounds are identified in the nhexane extracts from coal liquefaction residue,among which 7,12-dimethylbenzo[a]anthracene,benzo[a]pyrene,indeno[1,2,3-c,d]pyrene,benzo[ghi]perylene are of high carcinogenicity and teratogenicity.