Analytical Instrument Documents

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.

The Kendrick Mass Defect (KMD) method has made it possible to easily visualize polymer series contained in complex high mass-resolution mass spectra. Here, we introduce examples of analyzing a mixture of two types of binary polyesters and a quaternary polyester.

Thermal Desorption (TD) is a pretreatment device that heats the sample tube and introduces the desorbed gas into the GC. The gas desorbed from the sample tube is trapped in a cooled focusing trap and then desorbed by rapid heating of the focusing trap. The two-stage thermal desorption system provides high analytical sensitivity. These methods are used in a wide range of fields such as food, fibers, plastics and wood products because of their ability to collect volatile compounds efficiently (MSTips No. 435, 436, 459). In this report we show the useful results of the analysis of food aroma compounds using this method.

We report the results of the analysis of optional aromatic components from the volatile organic compounds of hamburger using this method.

We report the results of analyzing optional polymer additives from the pyrolysis measurement data of polyvinyl chloride (PVC) using this method.