Portable X-Ray Fluorescence is a tool for detecting elemental composition of soil and water. This is normally a slow and expensive process, but necessary to detect heavy metals and salinity for soil research. The portable meter offers a way to measure metals and salinity in the field in less than 1 minute. The authors review the use of the meter for several applications. Dr. David Weindorf of Texas Tech University is a world-renowned expert in use of the meter and presented this lecture to faculty while visiting Dr. John Galbraith at Virginia Tech on April 12, 2017.

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