The Middle Tennessee State University Department of Geosciences an X-ray fluorescence laboratory which is available for academic uses. The laboratory utilizes an Oxford Instruments MDX 1080+ multi-dispersive X-ray fluorescence (MDXRF) spectrometer, acquired in Spring 2000, with grant monies provided by the National Science Foundation Division of Undergraduate Education.

MDXRF is an elemental analysis method that combines classical techniques of wavelength dispersive and energy dispersive X-ray fluorescence, allowing high performance measurements to be made on low to high atomic number elements (Alumina to Uranium) in a variety of sample types. The MDX 1080+ is equipped for multi-elemental semi-quantitative (standardless) and quantitative analysis of  solids. Applications for MDXRF include materials such as cement, rock, minerals, soils, glass, metals and ceramics.

An important goal of the MTSU XRF laboratory is to provide undergraduate students the opportunity to participate in geochemical sample preparation and analysis. Accordingly, most sample preparations and analyses are performed by MTSU undergraduate students under the supervision of Department of Geosciences faculty. Visiting undergraduate and graduate students from other colleges and universities are welcome to use the sample preparation and MDXRF laboratory facilities. The lab is staffed by MTSU faculty and students. All analytical costs must be paid by the user.

Laboratory Facilities:

Oxford Instruments MDX 1080+ XRF Spectrometer                        XRF Sample Preparation Lab



Claisse XRF Sample Fusion System                                                XRF Sample Preparation Lab



Summaries of Student Research Involving the MDXRF Laboratory

Oxford Instruments MDX 1080+ Specifications

Analysis Method:                     Multi-Dispersive X-Ray Fluorescence

Element Range:                        Alumina to Uranium

Concentration Range:              ppm to 100%

Sample Form:                           Solids, Liquids, Powders, Glasses, Granules

X-Ray Detection:

            Fixed Channels:            Na, Mg, P, Ba, Rb, Y, Nb, K, Ca (Quantitative Analysis)

            Flexi-Channel:               Al to U (Quantitative and Semi-Quantitative Analysis)

X-Ray Excitation:                     Medium Power 200W, 40/50 kV End Window Rh X-Ray Tube

Sample Preparation:                 Pulverizing, Pelletizing, Fusion

For additional information regarding MTSU MDXRF laboratory capabilities and analytical costs, please contact Dr. Warner Cribb (615-898-2379;