| The distribution characteristics and parent material sources of aromatic hydrocarbon in different soil profiles were studied by analyzing the samples from Huaqing, Maling and Xifeng oilfields in the Loess Plateau of east Gansu. The results showed that naphthalene, phenanthrene, chrysene, biphenyl, benzopyrene Benzo(v), fluoranthene and TA st were detected in the three oilfields. Naphthalene, phenanthrene, chrysene and biphenyl had various methylation modified derivatives, and the content of the derivatives with different degrees of methylation presented a simple normal distribution. Naphthalene was the majority in aromatic hydrocarbon, next were phenanthrene, chrysene and biphenyl. The generating environment of hydrocarbon in the three oilfields were similar, all had fresh water micro sale water, and abundant aquatic organisms import. The methylation of arenes revealed that microorganism had strong effect on hydrocarbon generating process. |
