山东省滕县煤田某矿原煤中多环芳烃的分布特征

Distribution Characteristics of Polycyclic Aromatic Hydrocarbons in Raw Coal of Tengxian Coalfield, Shandong Province

煤炭中的一部分多环芳烃(PAHs)在开采、储运、利用过程中会进入到环境之中,形成污染。从PAHs的源头出发,在滕县煤田某矿开采工作面按顺序依次采集太原组16煤层原煤样品9个,利用气相色谱质谱联用仪检测16种优控多环芳烃。结果表明,该矿太原组原煤(气煤)中PAHs平均含量比气煤的平均PAHs含量高5倍还多;PAHs单项指标含量平均值之间存在较大差异,苯并(ghi)草北的含量是苊烯含量的631倍;不同煤样进行横向对比,存在单项指标无规律的差异性;原煤样品的同环数单环含量之和有随着环数增加而增大的变化趋势。

Some of the polycyclic aromatic hydrocarbons(PAHs) in raw coal will enter the environment during mining, storage and utilization, and form environment pollution. In order to research PAHs in raw coal, 9 samples of Taiyuan group were collected in sequence in Tengxian coalfield. 16 kind of polycyclic aromatic hydrocarbons were detected by gas chromatography-mass spectrometry. The results show that the average content of PAHs in the raw coal(gas coal) of the Taiyuan group is more than 5 times higher than the average PAHs content of the gas coal;there is a big difference between the average values of the individual indicators of PAHs, and the content of benzo(ghi)perylene is 631 times of Acenaphthylene;there is no regular difference in individual indicators of PAHs of different coal samples;the sum of per-ring content of the same ring number PAHs increases with the increase of the number of rings.