GD90trace (Glow Discharge Mass Spectrometry)
The main focus of MSI is high resolution glow discharge
mass spectrometry (GDMS); a mature, versatile technique
for the direct determination of elemental content (matrix to sub-trace) in a variety of materials.
- Full elemental analysis of major (wt%) to ultra-trace (ppb to sub-ppb) elements within a single scan
- Direct solid sampling technique alleviating the need for chemical digestion
- Continuously variable high resolution capabilities from <400 to >10,000 RP (10% valley definition)
- Dual collectors allowing up to 12 orders of linear dynamic range
- Proven technique for high sensitivity depth-dependent distribution analysis of trace elements in coatings and other multi-layered advanced materials
- Minimal matrix effects allow calibration without matrix matched standards by using Relative Sensitivity Factors (RSF)
GD90 Trace Key Features
- Tantalum cell and source construction for ease of cleaning
- Availability of cryo-cooling of the GD cell to minimise gas backgrounds
- Accommodates both pin and flat cell geometries
- No mass bias for light/heavy elements
- Calibration consists of a quick check of 180Ta and 181Ta to ensure that the IC and Faraday detectors are in agreement
- Low gas flow allows for cost-effective use of an alternate ionisation gas such as krypton
- Ability to analyse a wide range of samples ranging from alloys to high purity materials (both conductive and non-conductive) in a plethora of sample geometries
- Low sputter rate – at normal analytical conditions the sputter rate ranges from 150 nm/minute (conductive) to 100 nm/minute (non-conductive); lowering operational conditions allows sputter rate to be slowed by at least 5x
- RSFs and Detection Limit determinations are derived from published, readily sourced methods
- Front end assembly allows for the fitting of a custom-designed glove box for nuclear applications
Able to analyse a plethora of materials:
GDMS can fully compensate for the shortcomings of ICPMS with solids measurement
- Powders，Oxides，Low m.p. materials
- Pellets，Shards，Foils
- Waste products，Screws,Wires
- Composites,Thin films/coatings，Surface analysis
The GD90 was designed on the Organic Autoconcept platform with field-proven optics of over 200 units installed
