A study of phospholipids by ion mobility TOFMS.
A study of phospholipids by ion mobility TOFMS.
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DOI:
10.1016/j.jasms.2008.07.005
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发表时间:
2008-11
影响因子:
3.2
通讯作者:
Woods AS
中科院分区:
文献类型:
--
作者:
Jackson SN;Ugarov M;Post JD;Egan T;Langlais D;Schultz JA;Woods AS
Combining matrix-assisted laser desorption/ionization (MALDI) mass spectrometry with ion-mobility (IM) results in the fast sorting of biomolecules in complex mixtures along trend lines. In this 2D analysis of biological families, lipids, peptides, and nucleotides are separated from each other by differences in their ion mobility drift times in a timescale of hundreds of microseconds. Molecular ions of similar chemical type fall along trend lines when plotted in two-dimensional plots of ion mobility drift time as a function of m/z. In this study, MALDI-IM MS is used to analyze species from all of the major phospholipid classes. Complex samples including tissue extracts and sections were probed to demonstrate the effects that radyl chain length, degree of unsaturation, and class/head group have upon an ion’s cross section in the gas-phase. We illustrate how these changes can be used to identify individual lipid species in complex mixtures, as well as the effects of cationization on ion cross section and ionization efficiency.
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影响因子:
2.9
作者:
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通讯作者:
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影响因子:
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10.1016/j.jasms.2004.10.002
发表时间:
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影响因子:
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作者:
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通讯作者:
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