Application of microsecond pulsed glow discharge to modern commercially available optical emission spectrometers for bulk elemental analysis

Abstract

Microsecond Pulsed Glow Discharge (μs-PGD) was applied to commercially available spectrometers specified for OES elemental analysis with Grimm type sources, in order to have a look at the benefits which PGD can bring for practical bulk analysis.

Spatio-temporal dynamics of a microsecond pulsed Grimm-type glow discharge

“…The higher instantaneous power of the μs-PGD is closely related to the so-called electrical “pre-peak”, which is a spike in the electrical current at the leading edge of the discharge pulse. 8 The electrical pre-peak can be explained by gas heating followed by gas expansion. 9 The current pre-peak causes a radiation pre-peak, which is a spike of plasma radiation at the leading edge of the discharge pulse.…”

Plasma profiling-time of flight mass spectrometry: considerations to exploit its analytical performance for materials characterization

“…6,7 Though GD spectroscopies can be considered well established analytical techniques, instrumental and method developments are still in growth. Some of the implementations include the application of pulsed GDs (PGDs) in the millisecond or microsecond regime coupled to OES or MS, 8,9 and the use of time of flight (TOF) as GD mass analyser. 10 During the last years, PGD-TOFMS has been intensively investigated and interesting elemental and molecular analytical examples can be found in the literature.…”