Analytical Instrument Documents

This application note reports a qualitative analysis of impurity components of dimethyl carbonate (DMC), which is commonly used as a solvent in electrolytes, as a case study of msFineAnalysis AI analysis.

In this work, we examined a high boiling point compound in a JMS-T2000GC using a DEP, EI (DEI: Desorption Electron Ionization), FD (Field Desorption), and msFineAnalysis AI, and analyzed the resulting data in a JNM-ECZ600R with ROYALPROBETM HFX to determine its chemical composition and structure.

The detection sensitivity of the FI method largely depends on the wire configured in the emitter and the form of the whiskers created on the wire surface. We have developed a new emitter with the wire and conditions for creating whiskers optimized for the FI method in order to improve detection sensitivity. The effectiveness of this emitter is reported below by comparison with conventional emitters.

In this work, the qualitative analysis of the chemical composition and structure of organic compounds in urine and the quantitative analysis of target organic acid using JMS-T2000GC with msFineAnalysis AI was executed.

In this MSTips, we will introduce an application using "Polymer additives."

In this MSTips we will introduce an application of polymer type estimation using the major pyrolysis products of polymers.

In this MSTips, we will introduce an application of recycled PET products analysis using the high-performance gas chromatograph time-of-flight mass spectrometer "JMS-T2000GC" and unknown compounds structure analysis software "msFineAnalysis AI".

In this MSTips, we will introduce an application of SBR analysis using FD and Pyrolysis-GC-MS method of the JMS-T2000GC. In the FD method, the sample is applied to the emitter and directly introduced into the ion source, and then detected by soft ionization. It is possible to detect molecular ions peak in less than one minute. When measuring polymers such as SBR, a complex mass spectrum containing multiple peaks from oligomers is obtained. Even in this case, qualitative information can be easily obtained by KMD analysis. The main component styrene-butadiene copolymer can be visually evaluated the molecular weight distribution due to the difference of end group and degree of polymerization, and other ion peaks can be qualitatively analyzed by composition estimation. Although it is difficult to obtain the structural formula using the FD method alone, it is possible to obtain it efficiently using the Pyrolysis-GC-MS method in combination. Furthermore, these two methods can complement the range of measurable mass (= boiling point), making multifaceted analysis possible.

In this report, we have investigated a method for measuring both musty odor compounds and trihalomethanes using the SPME-GC-MS method with nitrogen carrier gas and the single column. As a result of our investigation, we have found that it is possible to detect both substances with sufficient sensitivity and reproducibility at a concentration of 1/10 of the water quality standard, and we report this here.

In this study, we utilized nitrogen as an alternative carrier gas and concurrently connected a column for VOCs and a column for haloacetic acids and phenols. We then proceeded to assess the applicability of this approach in water quality analysis. The evaluation was based on performance indicators such as detection sensitivity, calibration curve linearity, and reproducibility.