Mass Spectrometric Analysis of High Molecular Weight, Saturated Hydrocarbons

n-Alkane Utilization and Lipid Formation by a Nocardia

“…The insoluble fraction was purified by reprecipitation upon cooling from hot acetone and analyzed with a modified Consolidated 21-1033 mass spectrometer using the method of Meinschein and Kenny (1957). The grid form of Clerc et al (1955), in which the mass spectral peaks are arranged according to mass number, was employed. For example, an ion of the wax (C34H6802)+ has the same mass number as the hydrocarbon ion (C37H2X37o10)+ or (C37H64)+ and would be found opposite carbon number 37 in the appropriate column (-10 column) of the mass series grid.…”

The Mass Spectrum

“…Ötvos and Stevenson also suggested that their results show that cross sections for molecules are a constitutive property to a good approximation. This approximation allowed the development of "type analysis" or characterization of complex mixtures such as gasolines, kerosenes, and other high molecular weight materials by Hood (1958), Crable and Coggeshall (1958), and Clerc et al (1955) (see also the example in Chapter 6). The additivity concept is satisfactory for many other types of organic molecules, and have amply demonstrated this for the hydrocarbons.…”

Mass Spectrometry in Organic Geochemistry

“…A very extensive collection of hydrocarbon mass spectra is available [102], and fairly detailed discussion of aliphatic, cyclic and aromatic hydrocarbons and their type analysis in petroleum fractions can be found in the older literature [103][104][105][106]. For a review of the mechanistic aspects of hydrocarbon mass spectrometry the volume of BUDZIKIEWICZ et al [3] should be consulted.…”