Concept · chemistry
Mass spectrometry
5 studies1 discovery
Mass spectrometry weighs ions to identify molecules, map sequences or image intact proteins, often after a chosen ionisation and fragmentation method.
It is the workhorse of analytical chemistry and chemical biology for mixtures too complex for a single NMR tube.
Studies
5
Findings
5
7 supporting · 0 challenging · 0 qualifying citations
Open tensions
1
Currently
What we know
- This library holds 5 empirical chemistry papers on mass spectrometry with isolated findings, rates or spectra rather than reviews.
- Ammonium-acetate nano-DESI mass spectrometry imaging maps folded proteins and a noncovalent S100-A6 dimer in rat kidney at finer spatial scale than LESA.
- Helium nanodroplet mass spectrometry of 63Cu clusters shows magic He shells that match computed binding sites, including twisted-X Cu5+.
- A short digest with bead-bound RNase T1 plus tandem MS covers more than 80% of long mRNA sequences in one run, beating complete T1 maps.
- Desorption electrospray ionization mass spectrometry reads amine alkylation and Suzuki hits from nanoliter spots in about a second.
Largest unresolved question
Soft ionisation preserves complexes that harsh ionisation destroys; imaging spatial resolution and native versus denaturing conditions are different experiments.
Common misconceptions
The biggest peak is always the molecule you care about.
Ionisation bias, adducts and fragments can dominate the spectrum.
Related
Claim ledger
What the evidence shows
Drawn from 5 studies in this library. Mix labels say which citation roles are present; they are not a strength score. Supports means evidence for a finding; Challenges means evidence against a stated position; Qualifies marks scope.
This library holds 5 empirical chemistry papers on mass spectrometry with isolated findings, rates or spectra rather than reviews.
- Native nano-DESI images intact kidney proteins
- He tagging maps copper cluster ion shapes
- MS sequence maps of mRNA using partial RNase T1
Study Role Design N Population Outcome Native nano-DESI images intact kidney proteins Supports Animal / in-vitroNative nano-DESI MS imaging of proteins/complexes on rat kidney sections 10 μm rat kidney sections; imaging method development — no cohort N Rat kidney tissue sections and protein standards Spatial detection of native proteins and noncovalent complexes He tagging maps copper cluster ion shapes Supports Computational / modellingHe nanodroplet mass spectra of Cu clusters compared with MP2 He-binding calculations Gas-phase cluster experiment plus theory — no sample N Copper cluster ions solvated by helium in nanodroplets Magic-number structures and He-shell closing around Cu_n^+/− MS sequence maps of mRNA using partial RNase T1 Supports OtherImmobilized partial RNase T1 digestion with IP-RP LC–MS/MS for large RNA/mRNA mapping Analytical method on 20–40 μg RNA inputs — no biological cohort N Large RNAs and therapeutic mRNA samples Sequence coverage from partial vs complete T1 mapping (>80% from one partial digest) Ammonium-acetate nano-DESI mass spectrometry imaging maps folded proteins and a noncovalent S100-A6 dimer in rat kidney at finer spatial scale than LESA.
Helium nanodroplet mass spectrometry of 63Cu clusters shows magic He shells that match computed binding sites, including twisted-X Cu5+.
A short digest with bead-bound RNase T1 plus tandem MS covers more than 80% of long mRNA sequences in one run, beating complete T1 maps.
Desorption electrospray ionization mass spectrometry reads amine alkylation and Suzuki hits from nanoliter spots in about a second.
Debates
Tensions and limits
Some items are genuine disagreements on the same question. Others mark different assays, populations, or outcomes.
Soft ionisation preserves complexes that harsh ionisation destroys; imaging spatial resolution and native versus denaturing conditions are different experiments.
Soft ionisation preserves complexes that harsh ionisation destroys; imaging spatial resolution and native versus denaturing conditions are different experiments.
Study Role Design N Population Outcome Native nano-DESI images intact kidney proteins Supports Animal / in-vitroNative nano-DESI MS imaging of proteins/complexes on rat kidney sections 10 μm rat kidney sections; imaging method development — no cohort N Rat kidney tissue sections and protein standards Spatial detection of native proteins and noncovalent complexes He tagging maps copper cluster ion shapes Supports Computational / modellingHe nanodroplet mass spectra of Cu clusters compared with MP2 He-binding calculations Gas-phase cluster experiment plus theory — no sample N Copper cluster ions solvated by helium in nanodroplets Magic-number structures and He-shell closing around Cu_n^+/−
PaperFren reads this as a limit on how far one study travels — different assays, populations, or outcomes — not a forced fight between papers.
Timeline
How understanding moved
Study years are when the paper was published. Evidence edits are dated changes to this page's claims. Explanations are when PaperFren added a Discovery — not a claim that the science happened that day.
2026
Concept page published
Mass spectrometry
- Six thousand reactions an hour changes which chemistry questions can be asked
Change log
What changed
Dated edits to this page's evidence: studies added or removed from a claim, claims added or withdrawn, and new explanations tagged here. Coverage edits are distinct from reviewed research changes and corrections. Dates record PaperFren updates; study publication dates appear in the timeline.
- Coverage updated · Concept page published
Papers
5 studies in this library bear on Mass spectrometry, ordered by citations.
- Native nano-DESI images intact kidney proteins
Ammonium-acetate nano-DESI mass spectrometry imaging maps folded proteins and a noncovalent S100-A6 dimer in rat kidney at finer spatial scale than LESA.
- Screening reactions in one-second DESI-MS droplets
Desorption electrospray ionization mass spectrometry reads amine alkylation and Suzuki hits from nanoliter spots in about a second.
- MS sequence maps of mRNA using partial RNase T1
A short digest with bead-bound RNase T1 plus tandem MS covers more than 80% of long mRNA sequences in one run, beating complete T1 maps.
- LC-MS/MS assay and microsomal half-life of pemigatinib
A two-minute LC-MS/MS method quantifies pemigatinib in human liver microsomes and finds a 27.29 min half-life and moderate CLint.
- He tagging maps copper cluster ion shapes
Helium nanodroplet mass spectrometry of 63Cu clusters shows magic He shells that match computed binding sites, including twisted-X Cu5+.
Compare studies
Select 2–10 studies. Design and N are labels, not a ranking.
Nothing selected yet.
Questions
What is still open
Soft ionisation preserves complexes that harsh ionisation destroys; imaging spatial resolution and native versus denaturing conditions are different experiments.
Ask PaperFren about Mass spectrometry
Study this conceptflashcards and short-answer questions
What does mass spectrometry mean in this chemistry library?
Mass spectrometry weighs ions to identify molecules, map sequences or image intact proteins, often after a chosen ionisation and fragmentation method.
Name one empirical finding from the mass spectrometry papers.
Ammonium-acetate nano-DESI mass spectrometry imaging maps folded proteins and a noncovalent S100-A6 dimer in rat kidney at finer spatial scale than LESA.
What is a limit of mass spectrometry evidence here?
Soft ionisation preserves complexes that harsh ionisation destroys; imaging spatial resolution and native versus denaturing conditions are different experiments.