Analytical Instrument Documents

Pyrazines are known as key aroma compounds that characterize the roasted aroma of Hojicha, and in recent years, they have attracted attention for their potential health benefits. Thermal desorption (TD)-GC-MS is an analytical method used for analyzing food aroma components. Although the method enables highly sensitive and comprehensive analysis of aroma compounds in samples, searching for specific target compounds among the many detected components can be time-consuming.

In this study, we report a comparative analysis of dioxin analysis by hydrogen carrier gas with helium carrier gas using GC/MS/MS “JMS-TQ4000GC UltraQuad™ TQ” (Figure 1).

We measured commercially available Japanese curry roux, which is composed of various ingredients and extracts, such as spices, meat, and vegetables, and is thought to have a complex aroma component. Volatile components extracted by headspace solid phase microextraction (HS-SPME) were measured using GCxGC-TOFMS, and the results of analysis using msFineAnalysis AI are reported.

The qualitative analysis software msFineAnalysis AI enables automatic structure analysis of unknown compounds not registered in libraries through EI/SI integrated analysis and AI structure analysis. Ver. 3 newly supports comprehensive 2D GC (GCxGC) data analysis.

This MSTips introduces the usefulness of AI structure analysis using polymer pyrolysis analysis. Figure 1 shows a schematic diagram of pyrolysis (Py)-GCxGC-MS.

This MSTips introduces technique for comparing samples and identifying differential peaks using 2D chromatograms, using pyrolysis oil analysis. Pyrolysis oil is derived from discarded plastics and rubber products. It is used as an alternative fuel to petroleum and as a raw material for recycled plastics, making it one of the key technologies contributing to the circular economy.

In this MSTips, non-targeted measurements of metabolites in mouse feces were performed using GC-TOFMS, followed by data analysis using msFineAnalysis AI.

In this work, we conducted a comprehensive analysis of impurities contained in two different commercial IPA products, using a JMS-T2000GC, one of JEOL’s gas chromatography-high resolution mass spectrometers (GC-HRMS). We also used two different GC columns to identify impurity components to examine polarities and diverse molecular structures of the compounds. Our objective is to prove the effectiveness of the JMS-T2000GC combined with its qualitative analysis software, msFineAnalysis AI, in qualitative analysis of trace organic impurities contained in different IPA samples, so that we can contribute to enhancing the performance level of solvent quality control in semiconductor fabrication.

In this work, we examine the chemical composition and structure of organic particles in indoor PM using a JMS-T2000GC with msFineAnalysis AI. We also identified the configuration and elemental composition of inorganic particles by SEM-EDS analysis using a JSM-IT800is, providing a comprehensive analysis of the composition of indoor PM.

In this study, we used the JMS Q1600GC UltraQuad™ SQ Zeta to investigate the selection of marker compounds for the analysis of pyrolysis oil by the GC–QMS method, as well as a rapid identification method for polymer types in pyrolysis oil using these marker compounds. Furthermore, we also investigated a method for evaluating the composition ratios of polymer types based on the peak area ratios of the marker compounds.