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Analytical Applications of JMS-T100 Series Mass Spectrometry Systems

Significance of Topic

Mass spectrometry coupled with gas, liquid, and capillary electrophoresis offers unmatched sensitivity and selectivity in trace‐level analysis, structural characterization, and high‐throughput screening. The JMS-T100GC/LC AccuTOF family expands these capabilities by introducing exact‐mass measurement in fast GC, CI, AP-MALDI, cold-spray, IC/MS, and CE/MS modes. These advances address challenges in impurity profiling, isomer identification, proteome analysis, environmental monitoring, and functional material characterization.

Objectives and Study Overview

• Evaluate JMS-T100GC for qualitative analysis of ultra‐trace impurities in ethylene, diethylene, and triethylene glycols by EI/CI.
• Compare conventional and fast GC‐TOFMS throughput and resolution using lavender oil aroma compounds.
• Identify unknown liquid‐crystal constituents via EI/CI exact mass in JMS-T100GC.
• Demonstrate cold-spray TOFMS for labile molecules: amino acids and N-confused porphyrin isomers.
• Apply CE-TOFMS (JMS-T100LC) to pharmaceutical and plating liquid anion profiling.
• Integrate AP-MALDI in JMS-T100LP for soft ionization of phosphorylated peptides.
• Combine IC with JMS-T100LC for sub‐ppb bromate quantitation in water.

Methodology and Instrumentation

• JMS-T100GC AccuTOF GC: EI/CI (ammonia or isobutene) with DB‐5, BPX‐5 and fast GC columns, split injections, exact‐mass TOF detection.
• Fast GC: 0.1 mm×10 m columns, rapid oven ramps (up to 60 °C/min), TOFMS recording at 25 spectra/sec.
• Cold-spray TOFMS (AccuTOF CS): Low‐temperature nitrogen spray, retractable flow redirector, infusion source for labile ions.
• CE-TOFMS (JMS-T100LC): Agilent CE with sheath liquid, 50 µm capillary, ESI+ or ESI− ionization.
• AP-MALDI (JMS-T100LP): Atmospheric MALDI with fiber‐coupled UV laser, heated inlet capillary, α‐CHCA matrix.
• IC-MS: Tosoh IC-2001 with suppressor, SHODEX SI‐50 column, ESI− detection of halogen acids.

Main Results and Discussion

• Glycols impurity profiling revealed decomposition and trace by‐products (<0.5 %) and unknown ester in triethylene glycol, elucidated by exact‐mass CI/EI.
• Fast GC/MS achieved 4× throughput versus conventional GC while preserving resolution; TOFMS at 0.04 s scan rate resolved sub‐second peaks.
• Unknown liquid‐crystal ester identified (C22H23NO2) by combining odd‐mass rule, exact CI mass, and EI fragments.
• Cold-spray preserved noncovalent clusters of proline multimers and enabled detection of N-confused porphyrin–metal complexes unstable under ESI.
• CE-TOFMS sensitively separated and quantified six cold-medicine APIs and plating liquid anions with nL injections.
• AP-MALDI provided soft ionization of phosphorylated β-casein peptides, delivering high‐resolution parent ions unattainable by vacuum MALDI Reflectron mode.
• IC-MS quantitated bromate at 50 ppt detection limit, linear to 10 ppb, with <2 % RSD and confirmed identity by exact‐mass attribution.

Benefits and Practical Applications

• Enhanced confidence in structural assignments via exact‐mass measurement in CI/EI and AP-MALDI.
• High‐throughput aroma profiling for flavor and fragrance R&D using fast GC/TOF.
• Improved quality control in industrial glycols, liquid crystals, pharmaceuticals, plating baths, and water safety.
• Access to labile or aggregated species (porphyrins, peptides) through cold-spray/MALDI for material and proteomics research.

Future Trends and Applications

• Integration of fast chromatography with exact‐mass TOF for metabolomics and petrochemical screening.
• Expansion of AP-MALDI and cold-spray sources in native mass spectrometry of proteins, lipids, and complex biomolecules.
• Routine coupling of IC/MS for regulatory monitoring of emerging contaminants in water and food.
• Development of automated platforms combining CE, fast GC, and MALDI for high‐speed biomarker discovery.

Conclusion

The JMS-T100 series AccuTOF platforms demonstrate versatile, high‐accuracy mass analysis across GC, LC, CE, IC, MALDI, and cold-spray modalities. By delivering exact mass, high throughput, and soft ionization, they address critical analytical challenges from trace impurity identification to soft‐bond preservation in complex molecules.

References

1. Yamaguchi K. et al. Cold‐spray ionization MS: principle and applications. J Mass Spectrom. 2003;38:473–490.
2. Furuta H. et al. Doubly N‐Confused Porphyrins as Efficient Sensitizers. Chem Lett. 2003;32:244–245.
3. Shimizu K. et al. IC/MS quantitation of bromic acid in water. JEOL MS Users Meeting 2004.