Show simple item record

dc.contributor.advisorIrgolic, K. J.
dc.creatorSchronk, Leonard Royce
dc.descriptionIncludes bibliographical references (leaves 138-142)en
dc.description.abstractSeven fractions of a 535-675(DEGREES)C distillate of Wilmington, California crude oil were subjected to qualitative and semi-quantitative analysis using probe microdistillation/mass spectrometry. Samples of the saturates, monoaromatics, and three gel permeation chromatographic subfractions of the monoaromatics, diaromatics, and a gel permeation chromatographic subfraction of the polar polyaromatics were introduced via a heated/cooled quartz direct probe and analyzed for their hydrocarbon components. Sample volatilization using linear and non-linear temperature programming facilitated the micromolecular distillations. The 70 eV analysis on the monaromatics GPC fraction 19 was correlated to those obtained from the same sample by 10 eV electron and field ionization. Intensities for ions detected were corrected for variations caused by pressure effects and were plotted versus temperature to produce experimental elimination curves. Non-linear regression analysis was performed on each ion's elimination curve to calculate the maximum intensity, the temperature at which the intensity reached this maximum, and the area beneath the curve. Mass measurements at high and medium resolution were used for the assignment of elemental compositions. Relative area percents for each ion representing only the hydrocarbon components were calculated for each fraction and were tabulated according to carbon number and Z series. ..en
dc.format.extentxiii, 230 leaves : illustrationsen
dc.rightsThis thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.en
dc.subject.classification1981 Dissertation S382
dc.subject.lcshPetroleum products--Analysisen
dc.subject.lcshMass spectrometryen
dc.titleAnalysis of heavy ends of petroleum by probe microdistillationmass spectrometryen
dc.typeThesisen A&M Universityen of Philosophyen
dc.contributor.committeeMemberHanks, A. R.
dc.contributor.committeeMemberO'Brien, D. H.
dc.contributor.committeeMemberPulley, P. E.
dc.contributor.committeeMemberYoung, V.
dc.format.digitalOriginreformatted digitalen
dc.publisher.digitalTexas A&M University. Libraries

Files in this item


This item appears in the following Collection(s)

Show simple item record

This item and its contents are restricted. If this is your thesis or dissertation, you can make it open-access. This will allow all visitors to view the contents of the thesis.

Request Open Access