Department of Chemistry, Texas A&M University, College Station, Texas 77843, USA.
Anal Chem. 2009 Dec 15;81(24):9941-7. doi: 10.1021/ac901594f.
Here, complementary ion mobility/mass spectrometry (IM/MS) and ultrahigh-resolution Fourier transform ion cyclotron resonance (FTICR) MS analyses of light, medium, and heavy petroleum crude oils yielded distributions of the heteroatom-containing hydrocarbons, as well as multiple conformational classes. The IM/MS technique provides unique fingerprints for fast identification of signature conformational/compositional patterns, whereas FTICR MS analysis provides comprehensive heteroatom class distributions. IM/MS and FTICR MS results reveal an increase in compositional complexity in proceeding from light to medium to heavy crude oils. Inspection of the mobility results shows a high structural diversity for the C(n)H(h)XY (XY = N(1), S(1), N(1), O(1), NS, SO(1-2), NO(1-2), etc.) series, as well as a shift from planar to more compact three-dimensional structures with increasing mass.
这里，对轻质、中质和重质石油原油进行互补的离子淌度/质谱 (IM/MS) 和超高分辨率傅里叶变换离子回旋共振 (FTICR) MS 分析，得到了含杂原子烃以及多种构象类别的分布。IM/MS 技术为快速鉴定特征构象/组成模式提供了独特的指纹，而 FTICR MS 分析则提供了全面的杂原子类别分布。IM/MS 和 FTICR MS 的结果表明，从轻质到中质再到重质原油，组成的复杂性逐渐增加。对淌度结果的检查表明，C(n)H(h)XY（XY = N(1)、S(1)、N(1)、O(1)、NS、SO(1-2)、NO(1-2) 等）系列具有很高的结构多样性，并且随着质量的增加，从平面结构向更紧凑的三维结构转变。
