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X-Ray Fluorescence Technology

X-Ray Fluorescence Technology. Proven to work well and has been used extensively by many wood treating plants to test retention levels. Standardized by the AWPA. Using the Spectro/Asoma model 400 unit (different from the wood treatment industry). Theory of X-Ray Fluorescence.

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X-Ray Fluorescence Technology

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  1. X-Ray Fluorescence Technology Proven to work well and has been used extensively by many wood treating plants to test retention levels. Standardized by the AWPA. Using the Spectro/Asoma model 400 unit (different from the wood treatment industry).

  2. Theory of X-Ray Fluorescence • Incident X-ray from the analyzer strikes an electron occupying the lowest shell • Electron is ejected • An upper-shell electron drops down to fill the vacancy • X-ray characteristic to this elements’ energy is emitted Nucleus Ejected e- Transitioned e- Incident X-Ray Emitted X-Ray

  3. XRF Field Photos ¾”

  4. Treated vs. Untreated Wood

  5. Dry vs. Wet Treated Wood

  6. Dry vs. Wet Untreated Wood

  7. Alternative Chemicals

  8. Heartwood vs. Sapwood

  9. Distance readings

  10. Summary • Advantages • Very consistent. • It can not only differentiate between treated and untreated wood but gives the actual amount treated in specific units. • Disadvantages • Non-customized equipment • Hit analyze key  long print time. • Limited to no more than 1” distance. • Due to the radiation, a minimum 6” radial distance must be maintained at all times.

  11. Questions www.eng.miami.edu/~hmsolo/sarasota/index_sara.htm

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