High Performance Gas Chromatograph – Time-of-Flight Mass Spectrometer

Model: JMS-T2000GC AccuTOF-GC Alpha

Brand: Jeol - Japan

Origin:

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JMS-T2000GC AccuTOF™ GC-Alpha High Performance Gas Chromatograph – Time-of-Flight Mass Spectrometer

Features

  • Alpha – The New Beginning

The Alpha takes you to a new world of mass spectrometry.
Introducing JMS-T2000GC “AccuTOF™ GC-Alpha”, the ultimate GC-MS with superior performance and ease of operation.

  • The JMS-T2000GC AccuTOF™ GC-Alpha is the 6th generation JEOL GC-TOFMS and has an improved ion optics system to achieve ultra-high resolution.
    The AccuTOF™ GC-Alpha is an orthogonal-acceleration time-of-flight mass spectrometer(oaTOFMS) with dual stage reflectron. It employs an ideal ion optical system realizing both high ion transmission(=sensitivity) and ultra-high resolution.
  • The Resolving power of a time-of-flight mass spectrometer is calculated according to the formula above. With this equation in mind, the new JMS-T2000GC AccuTOF™ GC-Alpha hardware was designed to achieve ultra-high resolution using the following principles:
    • Make t longer: increase the flight distance 4 m
    • Make Δ t smaller: new ion optical system using dual stage reflectron
    • Make Δ t smaller: ion transfer system that can accommodate ions with a wide range of kinetic energy

    With the newly developed hardware, the AccuTOF™ GC-Alpha features 6 times higher resolution than the first generation AccuTOF™ GC and has a mass accuracy of ≤ 1 ppm.

    Acquiring unrivaled high-quality data, the AccuTOF™ GC-Alpha is the ultimate solution for GC-MS qualitative analysis.

Basic Performance of AccuTOF™ GC-Alpha

High performance for both qualitative and quantitative analysis

Four “High” specifications and two “Wide” specifications achieved simultaneously

The JMS-T2000GC AccuTOF™ GC-Alpha is a high-performance GC-MS system that simultaneously realizes high mass resolution, high mass accuracy, high sensitivity, high speed data acquisition, wide dynamic range, and wide mass range.

The high mass resolution and high mass accuracy offers unprecedented qualitative analysis results. The high-speed data acquisition can be used for advanced GC-MS measurements such as comprehensive two-dimensional GC (GCxGC), while the wide dynamic range is useful for not only quantitative analysis but also for qualitative analysis of complex mixtures. The wide mass range is especially useful for direct MS measurements, and high sensitivity enables unprecedented information about trace components.

The AccuTOF™ GC-Alpha is truly a high-performance GC-MS system that removes the limitations for chemical analysis.

AccuTOF™ GC-Alpha provides multiple ionization methods

Soft ionization – a powerful tool for qualitative analysis

EI, the most widely used ionization technique in GC-MS, is superior in sensitivity and reproducibility and is supported by a variety of library searchable databases.

For any scientist using GC-MS in search of further information, what is ultimately important is molecular ion detection. EI, which uses a high ionization energy of 70 eV, generates numerous fragment ions, from which structural information is acquired. However, EI often fails to show strong molecular ion signals. Consequently, qualitative analysis results may be incorrect if they solely rely on database searches.

Thus, it is critical in GC-MS analysis to enhance the accuracy of qualitative analysis by using various soft ionization techniques in addition to EI. Chemical ionization (CI), photoionization (PI), and field ionization (FI) are all optionally available on the AccuTOF™ GC-Alpha. With the accurate mass measurement capability for all ionization techniques, elemental composition of the analyte can be reliably determined.

FI and FD ~ Ideal Soft Ionization Techniques for Molecular Weight Determination

FI and FD are extremely soft ionization techniques that provide lower internal energy to the analytes than EI and even CI, thus producing clear molecular ions.

As a result, FI and FD are ideal for molecular weight determination.

FI (Field Ionization)

  • The sample is introduced to the ion source through GC or a standard sample inlet system.
  • Unlike CI, FI uses no reagent gas; no need to choose a reagent gas appropriate for the analyte.

FD (Field Desorption)

  • The sample is applied onto the emitter and directly introduced into the system.
  • Suitable for analysis of thermally labile compounds.
  • Ideal for samples soluble in nonpolar solvents.
  • Analyzes powder samples dispersible in solvents.
  • Analyzes low- to mid-polar metal complexes.
  • Analyzes high molecular weight samples not supported in GC-MS, such as polymers.

 

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