首页> 外文会议>Proceedings of the Twenty-eighth Arctic and Marine Oilspill Program(AMOP) Technical Seminar vol.1 >Evaluation of Short-term Physical Weathering of a Heavy Fuel Oil by use of Time Warping and PCA
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Evaluation of Short-term Physical Weathering of a Heavy Fuel Oil by use of Time Warping and PCA

机译:通过时间扭曲和PCA评估重质燃料油的短期物理风化

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Effects of evaporation and dissolution on the chemical composition of a heavy fuel oil were studied in laboratory experiments designed to separate these physical weathering processes. The in vitro evaporation test lasted 7 days and the in vitro dissolution test lasted 14 days.rnData from chromatograms of m/z 105 that includes the homologue series of alkyltoluenes, which are affected by both evaporation and dissolution, were analysed using a hyphenated analytical method comprising gas chromatography - mass spectrometry with selected ion monitoring (GC-MS/SIM), data preprocessing by correlation optimised warping (COW), and principal component analysis (PCA).rnThe PCA model using two principal components was capable of resolving the individual effects of evaporation and dissolution, showing clear time dependence. The preprocessing method used was however not able to completely resolve the effects of the in vitro weathering processes from the variability inherent in the analytical procedure.
机译:在旨在分离这些物理风化过程的实验室实验中,研究了蒸发和溶解对重油化学成分的影响。体外蒸发测试持续7天,体外溶出测试持续14天。rnn使用m-z 105色谱图数据,其中包括受蒸发和溶解影响的烷基甲苯同系物序列,使用联用分析方法进行了分析包括气相色谱-质谱联用选择的离子监控(GC-MS / SIM),通过相关优化翘曲(COW)进行的数据预处理和主成分分析(PCA)。rn使用两个主成分的PCA模型能够解决各个影响蒸发和溶解,显示明显的时间依赖性。然而,所使用的预处理方法无法从分析程序固有的可变性中完全解决体外风化过程的影响。

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