Analytical Instrument Documents

In this application note, dipeptides extracted from natto were analyzed. The results of amino acid composition analysis using the SpiralTOF mode and structural analysis using the TOF‑TOF mode are reported.

This report presents an example of the rapid, simultaneous analysis of these musty odor compounds using the SPME-GC-MS/MS method. Solid Phase Microextraction (SPME) is a technique in which a fine, polymer-coated fiber is exposed to the sample water (or its headspace) to adsorb and concentrate target components. We evaluated the detectability at a concentration of 1 ppt using standard samples, as well as the linearity of the calibration curves for quantification and the repeatability at the lower limit of quantification.

Pyrolysis‑GC‑MS provides structural information on substructures originating from monomers and end groups. While many detected pyrolysis products are not registered in the NIST library, automated analysis be achieved using AI structure analysis with msFineAnalysis AI.

In this report, we attempt to improve the image quality of extracted mass images using the FINE-AI Filter, which was developed by applying a machine-learning model for noise filtering—originally created from secondary electron images obtained by scanning electron microscopy (SEM)—to MALDI-MSI.

In this report, we attempted end group analysis using high-precision MALDI-TOFMS after SEC fractionation of polycarbonate (PC) with high polydispersity.

This report introduces a phase analysis method using vertex component analysis (VCA). Furthermore, a machine learning-based noise reduction method (FINE-AI Filter) was applied as a preprocessing step.

This note highlights several key aspects of the SuperCOOL MARVEL probe’s performance that are central to modern NMR spectroscopy, including its sensitivity across multiple nuclei, its robust RF power‑handling capabilities, and its versatility in experiments involving 1H, 19F, and X‑nuclei.

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Scalar couplings arise between magnetically active nuclei that interact through chemical bonds. These couplings carry valuable information about molecular structure and conformation. Accurately measuring them, however, can be challenging. To overcome this, several NMR techniques have been developed, one of the most effective being the HECADE-HSQC (Heteronuclear Coupling Analysis via Double-Edited HSQC) experiment introduced by Koźmiński and Nanz.

This is a compendium of organic chemistry related applications notes and JEOL News articles based on the data acquired on JEOL ultra-high mass-resolution MALDI-TOFMS JMS-S3000 SpiralTOF™ series.