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Method and apparatus for in-process liquid analysis by laser induced plasma spectroscopy

  • US 6,741,345 B2
  • Filed: 02/08/2001
  • Issued: 05/25/2004
  • Est. Priority Date: 02/08/2001
  • Status: Expired due to Term
First Claim
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1. A laser-induced plasma spectroscopic apparatus for analysing a liquid comprising:

  • an optical structure to direct a beam of laser pulses to a surface of the liquid to generate a plasma that emits elemental radiation that corresponds to at least one compositional element of the liquid;

    a detector structure for detecting said emitted elemental radiation; and

    a cell assembly which establishes a substantially laminar flow of the liquid past the detector structure, said laminar flow sufficient to prevent said beam of laser pulses from perturbing a region on said surface within a focal volume of said detector structure, said cell assembly including a controller to control a liquid surface level.

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