Evidence map›Paper›PMID 25851654›Full record

ArticleJournal of the American Society for Mass Spectrometry2015

Ion-to-Neutral Ratios and Thermal Proton Transfer in Matrix-Assisted Laser Desorption/Ionization.

I-Chung Lu, Kuan Yu Chu, Chih-Yuan Lin, Shang-Yun Wu, Yuri A Dyakov, Jien-Lian Chen, Angus Gray-Weale, Yuan-Tseh Lee, Chi-Kung Ni

Abstract read
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In one paragraph

Article in Journal of the American Society for Mass Spectrometry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. The Influence of MS Imaging Parameters on UV-MALDI Desorption and Ion Yield.Journal of the American Society for Mass Spectrometry · 2019
    Article
  7. Matrix Optical Absorption in UV-MALDI MS.Journal of the American Society for Mass Spectrometry · 2018
    Article
  8. Article
  9. Article
  10. Formation of Metal-Related Ions in Matrix-Assisted Laser Desorption Ionization.Journal of the American Society for Mass Spectrometry · 2016
    Article
  11. Article
  12. Review
  13. Article
  14. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

I-Chung LuInstitute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 10617, Taiwan.
Kuan Yu Chu
Chih-Yuan Lin
Shang-Yun Wu
Yuri A Dyakov
Jien-Lian Chen
Angus Gray-Weale
Yuan-Tseh Lee
Chi-Kung Ni

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The ion-to-neutral ratios of four commonly used solid matrices, α-cyano-4-hydroxycinnamic acid (CHCA), 2,5-dihydroxybenzoic acid (2,5-DHB), sinapinic acid (SA), and ferulic acid (FA) in matrix-assisted laser desorption/ionization (MALDI) at 355 nm are reported. Ions are measured using a time-of-flight mass spectrometer combined with a time-sliced ion imaging detector. Neutrals are measured using a rotatable quadrupole mass spectrometer. The ion-to-neutral ratios of CHCA are three orders of magnitude larger than those of the other matrices at the same laser fluence. The ion-to-neutral ratios predicted using the thermal proton transfer model are similar to the experimental measurements, indicating that thermal proton transfer reactions play a major role in generating ions in ultraviolet-MALDI.

Identifiers

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.