摘要
以渤海某原油作为研究对象进行综合模拟风化实验,探讨了原油中五类PAHs组分的风化规律并筛选出其中稳定的诊断比值。结果表明:经过50d风化,原油中PAHs的分布已经发生了较大的改变,其中萘系类损失最为严重,菲系列所占的比例有所提高,二苯并噻吩、屈、芴系列则保持相对稳定,这为进一步筛选用于溢油来源鉴别的新诊断比值参数提供了一定依据;经风化检验,现有常用6种PAHs诊断比值在风化50d后较稳定,可用于风化溢油的鉴别;所选取新诊断比值中,菲和屈系列、烷基取代二苯并噻吩类、烷基取代芴类抗风化能力较强,共筛选出34种诊断比值可作为溢油鉴别的有效指标。
We simulated the changes of the polycyclic aromatic hydrocarbons （PAHs） in crude oil from Bohai Sea under comprehensive weathering condition to understand the process of pollution due to oil spill and leak. Some diagnostic ratios were selected. The results show that the distribution patterns of PAHs in crude oil changed greatly after 50 days of weathering. Compounds of naphthalene series disappeared largely, of which phenanthrene （PHE） series increased to some extent, and series of dibenzothiophene, chrysene, and fluorene remained relatively unstable. The six customary diagnostic ratios that applied show strong weathering-resistance. These ratios have been used to identify the oil source. Among 34 diagnostic ratios that selected as effective indicators, the series of phenanthrene, chrysene, alkyl dibenzothiophene, and alkyl fluorene were in strong weathering resistance, being the most indicative to oil spill identification.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
2013年第5期1182-1188,共7页
Oceanologia Et Limnologia Sinica
基金
海洋公益性行业科研专项经费项目
201205012-4号
中央级公益性科研院所基本科研业务费专项资金
2013G11号
大连理工大学海岸和近海工程国家重点实验室开放基金项目
LP1012号
关键词
原油
多环芳烃
风化
诊断比值
crude oil
polycyclic aromatic hydrocarbons （PAils）
weathering
diagnostic ratio
