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Method for measuring the concentration or partial pressure of oxygen

  • US 4,994,396 A
  • Filed: 12/14/1987
  • Issued: 02/19/1991
  • Est. Priority Date: 12/14/1987
  • Status: Expired due to Fees
First Claim
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1. A method for determining the concentration or the partial pressure of oxygen in media, comprising:

  • (A) inserting a sensor into the media, wherein the sensor comprises;

    (a) means for transmitting and collecting light to and from a light modifying medium; and

    (b) a light modifying medium comprising a luminescent dye dispersed in or upon a matrix and the dye is accessible to oxygen;

    wherein said luminescent dye contains a hexanuclear core of molybdenum, tungsten or mixtures thereof having 14 coordination sites, wherein each coordination site is occupied by a ligand;

    (B) transmitting and collecting light to and from said light modifying medium;

    (C) measuring the intensity of luminescence collected from the light modifying medium and relating the measured intensity to a known standard to determine the concentration or partial pressure of oxygen present in the media.

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