Glow Discharge Mass Spectrometry (GDMS)

Glow Discharge Mass Spectrometry (GDMS) utilizes Argon plasma generated in a Glow Discharge Vacuum chamber, to ionize the solid sample, for mass spectrometric micro-analysis of elements and inorganic species. Infinita Lab, USA, offers this test to clients in the USA and across the world through its laboratory network. ... Read More

  • icon

    Average 30% Cost
    Savings

  • icon

    100% Confidentiality
    Guarantee

  • icon

    Free, No-obligation
    Consultation

  • icon

    100% Customer
    Satisfaction

    TRUSTED BY ENGINEERS FROM

    Glow Discharge Mass Spectrometry (GDMS)

    Glow Discharge Mass Spectrometry (GDMS) is a form of mass spectrometry in which, usually, Argon plasma is generated using a low current electrical discharge (milliamps) in a Glow Discharge Vacuum chamber filled with Argon gas. Positively charged Argon plasma ions accelerate towards the cathode, which in the case of GDMS, is formed using the test sample. The release of sample atoms at the cathode, due to bombardment by Argon plasma, is termed ‘sputtering’. The sputtered atoms of the sample are ionized in the plasma and extracted through the anode into the mass spectrometer for detection and spectrometric analysis. Individual compounds have their own unique mass spectrum. When the spectrometer is operated in high resolution mode, this provides a powerful technique for the analysis of all trace and ultra-trace elemental constituents of inorganic materials.  The Glow Discharge ion source can be operated in three different electrical modes, namely Direct Current (DC), Radio Frequency (RF) and pulsed Glow Discharge systems. The radio frequency mode is used for non-conductive samples. The pulsed mode produces higher energy plasma ions for sputtering and hence, more analytical sensitivity.

    GDMS has found widespread applications in the analysis of trace-level elements and chemical species at surfaces and within conducting and nonconducting solids or dispersed liquids. It is also used in nuclear technology for characterization of nuclear fuels, and materials testing for elemental and isotopic composition.

    Common Uses of Glow Discharge Mass Spectrometry (GDMS)

    • Compositional profiling of metals, semiconductors and ceramics
    • Characterization of nuclear fuels and materials
    • Determination of radioactive contamination in environmental samples
    • Analysis of thin films

    Advantages of Glow Discharge Mass Spectrometry (GDMS)

    • Direct solid sample analysis, negligible sample preparation time
    • Full element coverage (except Hydrogen)
    • Detection of trace level (ppb) of species
    • Relatively free from Matrix effects

    Limitations of Glow Discharge Mass Spectrometry (GDMS)

    • Spectral interferences in the mass spectrum due to impurity gas ions and cluster ions
    • Non-conductors need to be powdered and mixed with conductive binders, since direct RF-GDMS equipment are not readily available
    • Sequential operation of mass analyzers limits depth profiling application when compared to optical emission spectroscopy (GD-OES)

     Industrial Applications of Glow Discharge Mass Spectrometry (GDMS)

    • Metals and alloys
    • Aerospace
    • Semiconductors
    • Ceramics
    • Environmental analysis
    • Nuclear materials
    • Forensics

    Featured Metrology Testing Services

    Did not find your required test? Contact Us

      TRUSTED BY ENGINEERS FROM

      FAQs on Glow Discharge Mass Spectrometry (GDMS)

      How does Glow Discharge Mass Spectrometry (GDMS) work?

      Glow Discharge Mass Spectrometry (GDMS) utilizes Argon plasma generated in a Glow Discharge Vacuum chamber, to ionize the solid sample, for mass spectrometric micro-analysis of elements and inorganic species.

      What are the advantages of Glow Discharge Mass Spectrometry (GDMS)?

      Advantages of Glow Discharge Mass Spectrometry (GDMS)

      o Direct solid sample analysis
      o Negligible sample preparation time.
      o Full element coverage (except Hydrogen).
      o Detection of trace level (ppb) of species.
      o Relatively free from matrix effects.

      What are the disadvantages of Glow Discharge Mass Spectrometry (GDMS)?

      Disadvantages of Glow Discharge Mass Spectrometry (GDMS)

      o Spectral interferences in the mass spectrum due to impurity gas ions and cluster ions.
      o Non-conductors need to be powdered and mixed with conductive binders, since direct RF-GDMS equipment are not readily available.
      o Sequential operation of mass analyzers limits depth profiling application when compared to optical emission spectroscopy (GD-OES).

      Send us a request

        Process for testing
        •  

          STEP 01

          You share material and testing requirements with us

        •  

          STEP 02

          We ensure your sample pick-up in an ensured manner

        •  

          STEP 03

          We deliver test report to your inbox

          Let’s work together!

          Share your testing requirements with us and we will be happy to assist you.

          ddd Just share your testing requirements and leave the rest on us!
          • Free, no-obligation consultation
          • Guaranteed confidentiality
          • Quick turnaround time
          • Hassle-free process

            ddd

            Let us combine our capabilities to achieve success!!

              idea icon
              Want to connect with an expert before you leave?