Abstract: A method and apparatus are disclosed for measuring trace amounts of constituents in samples by using laser induced breakdown spectroscopy and laser induced fluorescence under ambient conditions. The laser induced fluorescence is performed at a selected wavelength corresponding to an absorption state of a selected trace constituent. The intensity value of the emission decay signal which is generated by the trace constituent is compared to calibrated emission intensity decay values to determine the amount of trace constituent present.
Type:
Grant
Filed:
November 15, 1999
Date of Patent:
June 18, 2002
Assignee:
Bechtel BWXT Idano, LLC
Inventors:
Stuart C. Snyder, Judy K. Partin, Jon D. Grandy, Charles L. Jeffery