Mass Spectrometer Analyses of Oxygenated Compounds

Thomas, B. W.; Seyfried, W. D.

doi:10.1021/ac60033a002

Cited by 27 publications

(14 citation statements)

References 9 publications

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“…Although mass spectrometric methods have been used to analyze mixtures of alcohols (1,6,7,9,16,17), determination of individual Cs to Cio primary alcohols in the presence of, hydrocarbons requires preliminary separation before chemical or spectroscopic methods can be applied. A method, utilizing the trimethylsilyl ether derivatives of alcohols, has been developed for rapid, direct analysis of individual alcohols in hydrocarbon solutions (IS).…”

Section: Mass Spectra Of Trimethylsilyl Derivativesmentioning

confidence: 99%

Mass Spectra of Trimethylsilyl Derivatives

Sharkey¹,

Friedel²,

Langer³

1957

Anal. Chem.

185

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Section: Mass Spectra Of Trimethylsilyl Derivativesmentioning

confidence: 99%

Mass Spectra of Trimethylsilyl Derivatives

Sharkey¹,

Friedel²,

Langer³

1957

Anal. Chem.

185

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“…7,8 Low-resolution mass spectrometry (LRMS) methods, developed prior to the development of modern chromatographic methods, successfully allowed for the analysis of hydrocarbon compound types in gasoline, 9 lower distillate boiling ranges, 10 gas oil and higher distillate boiling ranges. [11][12][13][14][15][16] The methods provide quantitative information (i.e., relative amounts normalized to a total of 100%) about groups of chemical compounds summarized according to the degree of hydrogen deficiency, as reflected by the Z number (Z = 2, 0, À2, ,…) in the general formula for hydrocarbons C n H 2nZ .…”

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confidence: 99%

Exhaustive determination of hydrocarbon compound type distributions by high resolution mass spectrometry

Roussis

1999

Rapid Commun. Mass Spectrom.

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The need to obtain detailed chemical information about heavy petroleum fractions, where the usefulness of chromatographic separation techniques is limited, has been addressed by using high resolution mass spectrometry (HRMS). A magnetic sector mass spectrometer was used for the experiments. The instrument meets the mass and dynamic range criteria for the analysis of compounds in complex hydrocarbon fractions, but not the resolving power needs for the separation of overlapping mass doublets. A simple and fast method has been developed that permits the calculation of the relative amounts of the ion species in overlapping mass doublets by consideration of the unresolved peak abundance and the difference between the theoretical and measured masses. The exhaustive determination of hydrocarbon compound type distributions is achieved by the sequential comparison of the theoretical masses of compounds with a given formula against those measured in the mass spectrum.

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“…The amounts of oxygenates in the aqueous layer as determined by mass spectrometer (16) and by Karl Fischer reagent (10) agreed to within ±2%. A reasonably good correlation was also obtained between the latter method and a rapid determination of refractive index (Figure 5) which was therefore used to estimate the amounts of oxygenates to within a few per cent.…”

Section: Composition Of Water and Oil Layersmentioning

confidence: 83%