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Construction junctions are diamonds. They show where multiple structures must coexist on the same carrier and satisfy compatibility conditions.
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Production, separation, and detection of gas-phase ions according to mass-to-charge ratio, often with structural inference from fragmentation and exact mass.
Mass spectrometry tests an isotope-dilution amount estimate through measured isotope ratios after spike equilibration, blank correction, fractionation control, and a stated measurement equation.
How to interpret this relation type
The source theory, law, entity, prediction, or structural claim is directly tested, supported, constrained, or established by the target experiment or observation. Experimental support is not final logical proof; the edge detail states exactly what was measured.
Aston’s positive-ray mass spectrograph demonstrated chemically consequential isotopic mass patterns and the analytical power of mass-to-charge separation.
How to interpret this relation type
The source theory, law, entity, prediction, or structural claim is directly tested, supported, constrained, or established by the target experiment or observation. Experimental support is not final logical proof; the edge detail states exactly what was measured.
source: Can transform into / produce; target: Produced or reached from
Authored annotation
creates gas-phase ions for analysis
Authored explanation
A mass-spectrometric workflow ionizes analyte species before separating and detecting the resulting gas-phase ions; the ionization method can fragment, adduct, or otherwise alter what is observed.
How to interpret this relation type
A physical process transforms the source into, or produces, the target under the conditions stated in the edge detail.
source: Specializes to; target: Special case or refinement of
Authored annotation
specializes mass analysis to isotope ratios
Authored explanation
Isotope-ratio mass spectrometry specializes mass spectrometry to calibrated relative ion-signal measurements, where mass discrimination, isobaric overlap, chemical preparation, and reference materials limit the inferred isotope ratio.
How to interpret this relation type
A more specific theory, model, entity class, or regime is obtained by restricting or extending the scope of a broader framework.