Glow Discharge Optical Emission Spectrometer (GD-OES) LECO GDS-850A

Model: 
LECO GDS-850A
Supplier: 

The Glow Discharge Optical Emission Spectrometer (GD-OES) is used for matrix and surface analysis. With cathodic sputtering in an argon plasma, sample material is removed from the surface very uniformly; mono-layer per mono-layer. The sputtered atoms are excited in the glow discharge plasma. The resulting emission spectra is analysed by a multichannel spectrometer, making it possible to analyse up to 58 elements simultaneously. The intensity of the emitted light is proportional to the concentration of the element. The very high sputtering rates that are obtained with this techniques makes analysis very fast (a few seconds to only a few minutes), with the result that a big throughput of samples can be achieved. It finds wide application in the analysis of metals, alloys, stainless steels, aluminium, copper, brass, etc. Calibrations are achieved by analysing Certified Reference Standards (CRM'S). It has a wide linearity over wide concentration ranges. With the additional function of radio-frequency plasma, non-conducting samples can also be analysed. When the intensity of the emission lines is recorded as a function of the sputtering time, a depth profile is obtained. This depth profile is used to study surface phenomena of materials.

Status: 
Available
Condition: 
Good
Category: 
Spectrometers
Disciplines: 
Analytical Chemistry, Nuclear Technology, Nanotechnology, Surface analysis, Metallurgy.
Life Expectancy: 
10years
Location
Department: 
Research and Development
Building: 
Lab 29 V-H Building
Pelindaba East Church Street West Ext.
Pretoria
0001

Contact Person/s

Name: Dr Johannes T. Nel
Phone: +27 12-305-3134
Mobile: +27 83-308-0242
Email: johann.nel@necsa.co.za
Estimated Cost and Availability
Internal: 
R500
Per Hour
External: 
R500
Per Hour
Private Sector: 
R2 000
Per Hour
Time Spent Researching: 
50
Time Spent Teaching: 
0
Time Spent Other: 
50

Grantholder

Title: Dr
First Name: Johannes Theodorus
Last Name: Nel
Phone: +27 12-305-3134
Email: johann.nel@necsa.co.za
Funding Information
Equipment Price: 
R3,096,682
Year of Acquisition: 
2011