Analytical Instrument Documents

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.

In this MSTips, we report the results of analyzing aroma components in pickled Chinese cabbage using headspace solid-phase microextraction (HS-SPME) combined with GC-O-TOFMS, followed by integrated analysis using msFineAnalysis AI.

In this MSTips, three hydrocarbon oils—crude oil, diesel oil, and pyrolysis oil—were analyzed. Carbon number‑DBE plots obtained by hydrocarbon type analysis are explained, and the characteristic features of each sample derived from the analysis results are introduced.

The blank‑tube FI (Field Ionization) method introduces a sample into the GC inlet, passes it through a blank tube, and detects it by FI soft ionization. This method enables detection of molecular ions within less than one minute. When hydrocarbon mixtures such as oils are analyzed, complex mass spectra containing multiple molecular ion peaks are obtained. For their interpretation, Kendrick Mass Defect (KMD) analysis in the polymer‑analysis software msRepeatFinder is effective. In addition, difference analysis function is useful for extracting subtle differences between samples. In this MSTips, commercial oil and experimentally prepared model oil were analyzed. The results obtained from difference analysis are introduced.

In this application note, labeled N‑linked glycans (Fig. 1) were analyzed using the JMS‑S3000, and results of accurate mass measurements in the SpiralTOF mode and structural analysis in the TOF‑TOF mode are presented.

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.