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刘晓星, 孙会清, 王亚会, 符崇垚. 用正构烷烃分布特征鉴别海上混合原油[J]. 环境化学, 2016, 35(2): 305-310. doi: 10.7524/j.issn.0254-6108.2016.02.2015091802
引用本文: 刘晓星, 孙会清, 王亚会, 符崇垚. 用正构烷烃分布特征鉴别海上混合原油[J]. 环境化学, 2016, 35(2): 305-310. doi: 10.7524/j.issn.0254-6108.2016.02.2015091802
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LIU Xiaoxing, SUN Huiqing, WANG Yahui, FU Chongyao. Identification of blend crude oils spilled on sea by distribution characteristics of n-Alkanes[J]. Environmental Chemistry, 2016, 35(2): 305-310. doi: 10.7524/j.issn.0254-6108.2016.02.2015091802
Citation: LIU Xiaoxing, SUN Huiqing, WANG Yahui, FU Chongyao. Identification of blend crude oils spilled on sea by distribution characteristics of n-Alkanes[J]. Environmental Chemistry, 2016, 35(2): 305-310. doi: 10.7524/j.issn.0254-6108.2016.02.2015091802
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用正构烷烃分布特征鉴别海上混合原油

  • 1.

    大连海事大学环境科学与工程学院, 大连, 116026

  • 基金项目:

    中央高校基本科研业务费专项资金资助.

Identification of blend crude oils spilled on sea by distribution characteristics of n-Alkanes

  • 1.

    School of Environmental Science and Engineering, Dalian Marinetime University, Dalian, 116026, China

  • Fund Project: Supported by the special funds for basic scientific research business of Central University.

  • 摘要: 为鉴别海上混合型溢油,对混合原油的正构烷烃分布特征进行探讨,通过混油实验考察混合比对正构烷烃分布以及诊断比值的影响.实验中正构烷烃分布相异最大的大庆原油和沙特原油混合后,n-C10-n-C18的相对含量与大庆原油比例呈线性负相关,而n-C18-n-C35与其呈线性正相关,这种双向分布的特点明显不同于单油的单向分布.正构烷烃分布相近的阿联酋-伊拉克混油中n-C10-n-C35分布与单油几乎相同,但其n-C18/Ph随着混合比而变化,据此可以判别是混油还是单油.混合原油的n-C17/Pr、n-C18/Ph和Pr/Ph取决于单油之间的差异性,相差较大的混合后与混合比呈线性相关.30 d短期风化实验表明,混油中的n-C10-n-C13受风化影响下降明显,而n-C15-n-C35变化不大.混合原油的n-C17/Pr、n-C18/Ph和Pr/Ph基本上不受风化影响,即诊断比值仍可作为鉴别风化混油种类的依据.
    Abstract: Distribution characteristics of n-alkanes in blend crude oils were investigated to identify the types of oils spilled on sea. The influence of blend ratio on n-alkanes distribution and diagnostic ratio were investigated after crude oil mixing. For the blend oil of Daqing and Saudi Arabi which had the maximum difference in n-alkanes distribution, the relative content of n-C10-n-C18 negatively and linearly correlated with same proportion, but that of n-C18-n-C35 positively and linearly correlated with the proportion of Daqing. This means that the distribution of n-alkanes in blend curde oil is two-way and significantly different from one-way distribution of single crude oil. The distribution of n-C10-n-C35 in blend oil of UAE and Iraq was similar to each oil, but n-C18/Ph ratio changed with blend ratio, this feature could be used to distinguish single or blent oil in this case. n-C17/Pr, n-C18/Ph and Pr/Ph in blend oils depend on the dissimilarity of each oil, the diagnostic ratio linearly correlated with blend ratio after mixing with large dissimilarity. The short-term weathering experiments for 30 days showed that n-C10-n-C13 decreased significantly but n-C15-n-C35 changed little in blend oil. The diagnostic ratio of blend oil was almost unchanged by weathering, and can still be used for identification of blend oil species.
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    LI Y M, ZENG W L, YU Q, et al. Adverse effect of marine oil spills on human health and ecosystem:A review[J]. Asian Journal of Ecotoxicology, 2011, 6(4):345-351(in Chinese).

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    WANG C Y, HE S J, LI Y T, et al. Study on the state and ecological effect of spilled oil pollution in Chinese coastal waters[J]. Marine Sciences, 2009, 33(6):57-60(in Chinese).

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出版历程
  • 收稿日期:  2015-09-18
  • 刊出日期:  2016-02-15

用正构烷烃分布特征鉴别海上混合原油

  • 1. 大连海事大学环境科学与工程学院, 大连, 116026
  • 收稿日期:  2015-09-18
基金项目:

中央高校基本科研业务费专项资金资助.

摘要: 为鉴别海上混合型溢油,对混合原油的正构烷烃分布特征进行探讨,通过混油实验考察混合比对正构烷烃分布以及诊断比值的影响.实验中正构烷烃分布相异最大的大庆原油和沙特原油混合后,n-C10-n-C18的相对含量与大庆原油比例呈线性负相关,而n-C18-n-C35与其呈线性正相关,这种双向分布的特点明显不同于单油的单向分布.正构烷烃分布相近的阿联酋-伊拉克混油中n-C10-n-C35分布与单油几乎相同,但其n-C18/Ph随着混合比而变化,据此可以判别是混油还是单油.混合原油的n-C17/Pr、n-C18/Ph和Pr/Ph取决于单油之间的差异性,相差较大的混合后与混合比呈线性相关.30 d短期风化实验表明,混油中的n-C10-n-C13受风化影响下降明显,而n-C15-n-C35变化不大.混合原油的n-C17/Pr、n-C18/Ph和Pr/Ph基本上不受风化影响,即诊断比值仍可作为鉴别风化混油种类的依据.

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