Earth and Planetary Science
EPS Geophysics

X-Ray Fluorescence Lab (XRF)

The XRF is used for chemical analysis of a variety of materials including rocks, soils, cement, ceramics and archeological objects. For major elements (Na-Fe) 0.5g of sample is mixed with flux and fused into a glass disc. For trace element analysis 3g of powdered sample is pressed into a pill. Non-destructive trace element analysis is possible for such applications as archeology and art history. The department has a Philips PW2400 wavelength-dispersive x-ray fluorescence spectrometer with light element capability. The five crystals installed in the unit allow the analysis of elements O-U. The instrument also includes a fully automated 30 position sample changer for extended analysis acquisition time. They have a new Thermo QuantX energy- dispersive XRF, which is an excellent choice for non-destructive analysis of large objects and fast qualitative analysis of almost any type of material.

XRF Specs:
• Thermo Scientific Quant’x
• Bench top energy dispersive XRF with rhodium tube

XRF Prep Lab Specs:
• Ohaus Analytical Balance
• Air-gas Meker burner with platinum crucibles and mold for fused bead
• Hydraulic Powder Press
• 10 ton pill press
• Carbide Mortar& Pestal
• Spex pulverizer

Contact Name: 
Tim Teague