Roussis SG, Fitzgerald WP
Products and Chemicals Division, Imperial Oil, Sarnia, Ontario, Canada.
Anal Chem. 2000 Apr 1;72(7):1400-9. doi: 10.1021/ac9912193.
The coupling of gas chromatographic simulated distillation with mass spectrometry for the determination of the distillation profiles of crude oils is reported. The method provides the boiling point distributions of both weight and volume percent amounts. The weight percent distribution is obtained from the measured total ion current signal. The total ion current signal is converted to weight percent amount by calibration with a reference crude oil of a known distillation profile. Knowledge of the chemical composition of the crude oil across the boiling range permits the determination of the volume percent distribution. The long-term repeatability is equivalent to or better than the short-term repeatability of the currently available American Society for Testing and Materials (ASTM) gas chromatographic method for simulated distillation. Results obtained by the mass spectrometric method are in very good agreement with results obtained by conventional methods of physical distillation. The compositional information supplied by the method can be used to extensively characterize crude oils.
报道了气相色谱模拟蒸馏与质谱联用测定原油蒸馏曲线的方法。该方法可提供重量百分比和体积百分比的沸点分布。重量百分比分布由测得的总离子流信号获得。通过用已知蒸馏曲线的参考原油进行校准，将总离子流信号转换为重量百分比。了解整个沸点范围内原油的化学成分有助于确定体积百分比分布。长期重复性等同于或优于目前可用的美国材料与试验协会（ASTM）气相色谱模拟蒸馏方法的短期重复性。质谱法获得的结果与传统物理蒸馏方法获得的结果非常吻合。该方法提供的成分信息可用于广泛表征原油。
