scholarly journals MALDI-ion mobility mass spectrometry of lipids in negative ion mode

2014 ◽  
Vol 6 (14) ◽  
pp. 5001-5007 ◽  
Author(s):  
Shelley N. Jackson ◽  
Damon Barbacci ◽  
Thomas Egan ◽  
Ernest K. Lewis ◽  
J. Albert Schultz ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Ion Mobility ◽  
Negative Ion ◽  
Ion Mobility Mass Spectrometry ◽  
Maldi Imaging ◽  
Mobility Separation ◽  
Ion Mobility Separation ◽  
Negative Ion Mode

Ion mobility separation of two lipids prior to MALDI imaging.

Collision cross section calibrants for negative ion mode traveling wave ion mobility-mass spectrometry

The Analyst ◽  
2015 ◽  
Vol 140 (20) ◽  
pp. 6853-6861 ◽  
Author(s):  
Jay G. Forsythe ◽  
Anton S. Petrov ◽  
Chelsea A. Walker ◽  
Samuel J. Allen ◽  
Jarrod S. Pellissier ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Cross Section ◽  
Ion Mobility ◽  
Traveling Wave ◽  
Collision Cross Section ◽  
Negative Ion ◽  
Ion Mobility Mass Spectrometry ◽  
Negative Mode ◽  
Negative Ion Mode ◽  
Traveling Wave Ion Mobility

Introduction of a novel negative mode calibrant and evaluation of calibration strategies for TWIM CCS determination.

scholarly journals Ion mobility separation of deprotonated oligosaccharide isomers – evidence for gas-phase charge migration

2016 ◽  
Vol 52 (83) ◽  
pp. 12353-12356 ◽  
Author(s):  
W. B. Struwe ◽  
C. Baldauf ◽  
J. Hofmann ◽  
P. M. Rudd ◽  
K. Pagel
Keyword(s):  
Mass Spectrometry ◽  
Gas Phase ◽  
Quantum Chemical Calculations ◽  
Ion Mobility ◽  
Quantum Chemical ◽  
Ion Mobility Mass Spectrometry ◽  
Charge Migration ◽  
Mobility Separation ◽  
Ion Mobility Separation

Ion mobility-mass spectrometry in combination with quantum chemical calculations provides evidence that the charge in deprotonated glycan ions is mobile.

Spatial Metabolomics of the Human Kidney Using MALDI Trapped Ion Mobility Imaging Mass Spectrometry

2020 ◽  
Author(s):  
Elizabeth Neumann ◽  
Lukasz Migas ◽  
Jamie L. Allen ◽  
Richard Caprioli ◽  
Raf Van de Plas ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Ion Mobility ◽  
Imaging Mass Spectrometry ◽  
Structural Complexity ◽  
Human Kidney ◽  
Resolving Power ◽  
Mobility Separation ◽  
Trapped Ion ◽  
Mobility Data ◽  
Ion Mobility Separation

<div> <div> <p>Small metabolites are essential for normal and diseased biological function but are difficult to study because of their inherent structural complexity. MALDI imaging mass spectrometry (IMS) of small metabolites is particularly challenging as MALDI matrix clusters are often isobaric with metabolite ions, requiring high resolving power instrumentation or derivatization to circumvent this issue. An alternative to this is to perform ion mobility separation before ion detection, enabling the visualization of metabolites without the interference of matrix ions. Here, we use MALDI timsTOF IMS to image small metabolites at high spatial resolution within the human kidney. Through this, we have found metabolites, such as arginic acid, acetylcarnitine, and choline that localize to the cortex, medulla, and renal pelvis, respectively. We have also demonstrated that trapped ion mobility spectrometry (TIMS) can resolve matrix peaks from metabolite signal and separate both isobaric and isomeric metabolites with different localizations within the kidney. The added ion mobility data dimension dramatically increased the peak capacity for molecular imaging experiments. Future work will involve further exploring the small metabolite profiles of human kidneys as a function of age, gender, and ethnicity.</p></div></div>

Spatial Metabolomics of the Human Kidney Using MALDI Trapped Ion Mobility Imaging Mass Spectrometry

2020 ◽  
Author(s):  
Elizabeth Neumann ◽  
Lukasz Migas ◽  
Jamie L. Allen ◽  
Richard Caprioli ◽  
Raf Van de Plas ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Ion Mobility ◽  
Imaging Mass Spectrometry ◽  
Structural Complexity ◽  
Human Kidney ◽  
Resolving Power ◽  
Mobility Separation ◽  
Trapped Ion ◽  
Mobility Data ◽  
Ion Mobility Separation

<div> <div> <p>Small metabolites are essential for normal and diseased biological function but are difficult to study because of their inherent structural complexity. MALDI imaging mass spectrometry (IMS) of small metabolites is particularly challenging as MALDI matrix clusters are often isobaric with metabolite ions, requiring high resolving power instrumentation or derivatization to circumvent this issue. An alternative to this is to perform ion mobility separation before ion detection, enabling the visualization of metabolites without the interference of matrix ions. Here, we use MALDI timsTOF IMS to image small metabolites at high spatial resolution within the human kidney. Through this, we have found metabolites, such as arginic acid, acetylcarnitine, and choline that localize to the cortex, medulla, and renal pelvis, respectively. We have also demonstrated that trapped ion mobility spectrometry (TIMS) can resolve matrix peaks from metabolite signal and separate both isobaric and isomeric metabolites with different localizations within the kidney. The added ion mobility data dimension dramatically increased the peak capacity for molecular imaging experiments. Future work will involve further exploring the small metabolite profiles of human kidneys as a function of age, gender, and ethnicity.</p></div></div>

Spatial Metabolomics of the Human Kidney Using MALDI Trapped Ion Mobility Imaging Mass Spectrometry

2020 ◽  
Author(s):  
Elizabeth Neumann ◽  
Lukasz Migas ◽  
Jamie L. Allen ◽  
Richard Caprioli ◽  
Raf Van de Plas ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Ion Mobility ◽  
Imaging Mass Spectrometry ◽  
Structural Complexity ◽  
Human Kidney ◽  
Resolving Power ◽  
Mobility Separation ◽  
Trapped Ion ◽  
Mobility Data ◽  
Ion Mobility Separation

<div> <div> <p>Small metabolites are essential for normal and diseased biological function but are difficult to study because of their inherent structural complexity. MALDI imaging mass spectrometry (IMS) of small metabolites is particularly challenging as MALDI matrix clusters are often isobaric with metabolite ions, requiring high resolving power instrumentation or derivatization to circumvent this issue. An alternative to this is to perform ion mobility separation before ion detection, enabling the visualization of metabolites without the interference of matrix ions. Here, we use MALDI timsTOF IMS to image small metabolites at high spatial resolution within the human kidney. Through this, we have found metabolites, such as arginic acid, acetylcarnitine, and choline that localize to the cortex, medulla, and renal pelvis, respectively. We have also demonstrated that trapped ion mobility spectrometry (TIMS) can resolve matrix peaks from metabolite signal and separate both isobaric and isomeric metabolites with different localizations within the kidney. The added ion mobility data dimension dramatically increased the peak capacity for molecular imaging experiments. Future work will involve further exploring the small metabolite profiles of human kidneys as a function of age, gender, and ethnicity.</p></div></div>

scholarly journals Travelling-wave ion mobility mass spectrometry and negative ion fragmentation of hybrid and complexN-glycans

2016 ◽  
Vol 51 (11) ◽  
pp. 1064-1079 ◽  
Author(s):  
David J. Harvey ◽  
Charlotte A. Scarff ◽  
Matthew Edgeworth ◽  
Kevin Pagel ◽  
Konstantinos Thalassinos ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Ion Mobility ◽  
Travelling Wave ◽  
Negative Ion ◽  
Ion Mobility Mass Spectrometry ◽  
Ion Fragmentation
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