CAJ | 학술논문

对两种原油进行混合配比实验，将混合后油样置于人工气候箱进行风化模拟实验，采用气相色谱质谱联用仪(GC-MS)检测风化样品中的生物标志化合物，短期风化作用对混合溢油的油指纹、生物标志化合物诊断指标等的影响。结果表明，混合溢油的正构烷烃总质量变化与单一原油油品的变化规律相近，即前期风化较快，质量减损较多，而后期风化趋缓，不同混合比例的溢油表现差异不明显。常用于短期风化的诊断比值对各混合油样的风化具有指示意义，但难以定性鉴别油品是否发生混合。重复性限法检验只能判定短期风化过程前后的油样为同一油源，而难以反映油样是否为混合油源的特征，各诊断比值的RSD%值较大可能是混合溢油的一个表现。
대량충원유진행혼합배비실험，장혼합후유양치우인공기후상진행풍화모의실험，채용기상색보질보련용의(GC-MS)검측풍화양품중적생물표지화합물，단기풍화작용대혼합일유적유지문、생물표지화합물진단지표등적영향。결과표명，혼합일유적정구완경총질량변화여단일원유유품적변화규률상근，즉전기풍화교쾌，질량감손교다，이후기풍화추완，불동혼합비례적일유표현차이불명현。상용우단기풍화적진단비치대각혼합유양적풍화구유지시의의，단난이정성감별유품시부발생혼합。중복성한법검험지능판정단기풍화과정전후적유양위동일유원，이난이반영유양시부위혼합유원적특정，각진단비치적RSD%치교대가능시혼합일유적일개표현。
Two kinds of oils obtained from different sources were mixed together at different ratios, and tested. The composition changes of mixed oils at molecular level by simulating weathering conditions in static seawaters placed in an artificial climate chamber were investigated. The results show that similar with single crude oil, during the 15 weathering days, the mixed oils showed a significant loss of crude oils mainly during the first, while the loss sig-nificantly reduced during the rest of time. The conventional biomarkers Pr/Ph, Pr/n-C17, Ph/n-C18 and CPI1 can be used to indicate the short-term weathering of almost all mixed oils, while these biomarkers cannot be used to iden-tify weather the oils have been mixed or not. Repeatability limit analysis method can be used to detect whether oil samples before and after short-term weathering processes came for the same source of oil or not, but it is difficult to reflect whether the oil samples were mixed or not. High RSD% value of diagnostic markers of one of oil samples may be a manifestation that spill oils are a mixture.