Analytical Instrument Documents

In this study, a case was examined in which indoor line tape used for approximately eight months exhibited a degradation phenomenon where the color of the pigmented layer disappeared due to the influence of oblique light. The objective was to evaluate this oblique light-induced degradation and to clarify its underlying causes. For the evaluation, qualitative analysis of the substrate layer and adhesive layer constituting the tape was first carried out using the direct EGA-MS (Evolved Gas Analysis–Mass Spectrometry) method. This technique enabled direct detection of thermally decomposed products from each constituent layer, allowing for characterization of the material composition.

In this study, pyrolysis (Py)/GCxGC/HR-TOFMS system was applied to investigate the pyrolysis products of Vinylpyridine and Divinylbenzene copolymer as the ion exchange resin sample.

In this study, pyrolysis(Py)/GCxGC/HR-TOFMS system was applied to investigate the pyrolysis products of Ethylene-propylene–diene rubber (EPDM).

In this report, we analyzed methylephedrine, a phenethylamine compound, in common cold medicines as an application to the field of forensic chemistry.

In this work, commercially available organic pigments were analyzed using JMS-S3000 SpiralTOF™ and JMS-T200GC AccuTOF™ GCx-plus. Measurements were performed by matrix-free LDI (Laser Desorption Ionization) on the JMS-S3000 and by FD (Field Desorption) on the JMS-T200GC. Because good results were obtained with both methods, we report them here.

In this report, we will discuss the analysis of medicinal components in a combination cold remedy.

Matrix-assisted laser desorption/ionization (MALDI) combined with in-source decay (ISD) is a useful tool for doing top-down sequencing of intact proteins. In this work, we measured and compared the ISD fragment ions generated for several proteins using the high resolution MALDI- Spiral mode and the high sensitivity MALDI-Linear mode available on the JEOL SpiralTOF MALDI-MS system.

In this work, we demonstrate the measurement of intact proteins by using the Linear TOF option for the JEOL SpiralTOF system.

We report an application related to synthetic compound confirmation that combines nuclear magnetic resonance (NMR), which is indispensable for structural analysis of organic compounds, and mass spectrometry by DART.

Recently, Kendrick mass defect (KMD) plot analysis has been proposed as an effective data processing technique for SpiralTOF™ which allows for the structural characterization of complicated compounds1, 2. Here, a commercial acrylic adhesive containing cyanoacrylate was characterized using a SpiralTOF™ combined with KMD plot analysis.