K
Kuangnan Qian
Researcher at ExxonMobil
Publications - 75
Citations - 4765
Kuangnan Qian is an academic researcher from ExxonMobil. The author has contributed to research in topics: Mass spectrometry & Fourier transform ion cyclotron resonance. The author has an hindex of 35, co-authored 75 publications receiving 4345 citations. Previous affiliations of Kuangnan Qian include Philips & Purdue University.
Papers
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Journal ArticleDOI
Kendrick mass defect spectrum: a compact visual analysis for ultrahigh-resolution broadband mass spectra.
Christine A. Hughey,Christopher L. Hendrickson,and Ryan P. Rodgers,Alan G. Marshall,Kuangnan Qian +4 more
TL;DR: It is possible to break a broadband mass spectrum into 1-Da segments, rotate each segment by 90 degrees, scale each segment according to its mass defect, and compress the spacing between the segments to yield a compact display, illustrated for experimental electrospray ionization FTICR ultrahigh-resolution mass spectra of a petroleum crude oil.
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Resolution and identification of elemental compositions for more than 3000 crude acids in heavy petroleum by negative-ion microelectrospray high-field Fourier transform ion cyclotron resonance mass spectrometry
Kuangnan Qian,Winston K. Robbins,Christine A. Hughey,Helen J. Cooper,Ryan P. Rodgers,Alan G. Marshall +5 more
TL;DR: In this paper, negative-ion electrospray ionization (ESI) high-field Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) was used to identify crude acids.
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Reading chemical fine print: Resolution and identification of 3000 nitrogen-containing aromatic compounds from a single electrospray ionization Fourier transform ion cyclotron resonance mass spectrum of heavy petroleum crude oil
TL;DR: In this article, a high-field (9.4 T) Fourier transform ion cyclotron resonance mass spectrometer coupled to an external micro-electrospray ion source was used to identify 12 major heteroa...
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Identification of acidic NSO compounds in crude oils of different geochemical origins by negative ion electrospray Fourier transform ion cyclotron resonance mass spectrometry
TL;DR: In this paper, negative ion electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) was used for the selective ionization, resolution and identification of acidic NSO compounds in three crude oils of different geochemical origins.
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Microbial alteration of the acidic and neutral polar NSO compounds revealed by Fourier transform ion cyclotron resonance mass spectrometry
Sunghwan Kim,Lateefah A. Stanford,Ryan P. Rodgers,Alan G. Marshall,Clifford C. Walters,Kuangnan Qian,Lloyd M. Wenger,Paul J. Mankiewicz +7 more
TL;DR: A suite of genetically related oils that had experienced varying degrees of subsurface, anaerobic biodegradation was analyzed by ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry as mentioned in this paper.