夏季室外自然风化条件下燃料油中金刚烷的组分变化特征

发布时间：2018-01-27 08:00

本文关键词： 燃料油原油自然风化金刚烷诊断比值　出处：《海洋环境科学》2016年05期 　论文类型：期刊论文

【摘要】：以燃料油为研究对象进行室外自然风化实验(0~100 d),探讨了金刚烷的风化规律,在同一风化条件下,比较了燃料油和原油中金刚烷组分的风化特征。结果表明:燃料油中单金刚烷在风化60 d内全部被降解,渤海原油1号中单金刚烷在风化45 d内被降解完全,双金刚烷受风化影响较小。通过t检验分析,所选诊断比值中,燃料油中有7个金刚烷指标在风化20 d内保持稳定,双金刚烷指标DMDI-3、DMDI-4和DMDI-5在自然风化100 d内具有较好的稳定性,适合于长时间风化条件下溢油的鉴别。与渤海原油1号相比,燃料油中双金刚烷诊断比值稳定性更好,这可能与燃料油中双金刚烷浓度高、数据信号强、计算过程引入的误差小有关。
[Abstract]:Taking fuel oil as the research object, the outdoor natural weathering experiment was carried out for 100 days. The weathering law of adamantane was discussed under the same weathering condition. The weathering characteristics of adamantane in fuel oil and crude oil were compared. The results showed that the monoamantane in fuel oil was degraded within 60 days of weathering. In Bohai crude oil No. 1, the monoadamantane was completely degraded within 45 days of weathering, and the effect of weathering on the diamantane was relatively small. Seven adamantane indexes in fuel oil remained stable within 20 days of weathering, and DMDI-3. DMDI-4 and DMDI-5 have good stability within 100 days of natural weathering, which is suitable for the identification of oil spill under long weathering conditions, compared with Bohai crude oil No. 1. The stability of the diagnostic ratio of bisamantane in fuel oil is better, which may be related to the high concentration of bisamantane in fuel oil, the strong data signal and the small error introduced in the calculation process.
【作者单位】：中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室;国家海洋局第一海洋研究所;
【基金】：国家自然科学基金(41106112) 中央级公益性科研院所基本科研业务费专项资金项目(2012G27)
【分类号】：X55
【正文快照】： 近年来海洋溢油事故不断发生,海洋环境中石油污染问题已经成为世界各国关注的主要问题。溢油一旦进入环境后就会受到风化作用的影响,尤其是重度风化过程,原油及其制品固有的化学指纹特征就会发生变化[1-3],由于多种容易受风化影响组分的缺失,导致溢油样品固有的特征指纹信息受

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