化学学报 ›› 2000, Vol. 58 ›› Issue (4): 438-442. 上一篇    下一篇

研究论文

化学演讲过程数据的自动分辨: 复杂石油样品的GC-MS分析

沈海林;宋又群;崔卉;梁逸增   

  1. 湖南大学化学化工学院;湖南大学计量学与化学传感技术研究所
  • 发布日期:2000-04-15

Automatic resolution of data from evolutionary process: GC-MS analysis of petroleum sample

Shen Hailin;Song Youqun;Cui Hui;Liang Yizeng   

  • Published:2000-04-15

基于几种新化学计量学方法,提出了可自动解析化学演进数据的新途径。在该法中,首先选择关键向量。通过子空间比较法确定数据的化学秩。以关键向量为起点,通过初等变换不断迭代而实现对数据的解析。并利用数据非负性等检验解析结果的可靠程度。结合GC-MS数据的特点,选择的关键变量可为关键质谱或关键浓度曲线。该方法能极大地减少人为干预,大大降低数据分析时间,对文中的石油样本共解析出557个成分。

关键词: 色谱质谱法, 石油, 自动分析, 关键变量, 化学计量学

A new procedure, bsed on several recent chemometric method, is proposed for automatic analysis of data from evolutionary process. It runs in the following steps: first, select key spectra or variables; second, determine the chemical rank of data by subspace coparison; third, iterative into pure spectra and concentration profiles by elementary transform. Criteria, e.g. non-negativity, are used to check the reliability of results. As far as data from GC-MS is concerned, key variables can also he used for analysis besides key spectra. The proposed procedure greatly reduces user intervention and therefore saves analysis time. It promises a powerful tool for the resolution of complex system. There are 557 components resolved from petroleum sample in this paper.

Key words: CHROMATOGRAPHY-MASS SPECTROGRAPHY, PETROLEUM, AUTOMATIC ANALYSIS, STOICHIOMETRY

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