Method to detect phosphorus

Details Method to detect phosphorus Method to detect phosphorus

1995-09-29

1997-12-30

Alexander, Lyle A.

Chemistry: analytical and immunological testing

Phosphorus containing

436104, 436105, 422 52, G01N 2176

Patent

active

057029547

ABSTRACT:
An apparatus to detect and measure the amount of phosphorus in phosphorus-containing compounds comprises a burning chamber with a housing having an integral combustion chamber. A flammable reducing agent such as hydrogen is introduced into the combustion chamber along with a sample containing phosphorus admixed with air or oxygen. At least a portion of any phosphorus in the sample will be converted into phosphorus monoxide (PO) by the combustion. The resulting phosphorus monoxide is immediately drawn into a low-pressure, ambient temperature reaction chamber and reacted with ozone to convert the phosphorus monoxide to chemiluminescent phosphorus dioxide. A light-measuring device then measures the intensity of the light released from the chemiluminescent phosphorus dioxide.

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Gregory C. Turk, "Single-and Double-Resonance Laser-Induced Ionization of Phosphorus Monoxide in an Air0-Acetylene Flame for the Determination of Phosphorus," Aug. 1, 1991, pp. 1607-1611. Analytical Chemistry..
M. Pakniat, N. Maleki and A. Safavi, "Construction and design of a gas-sensing detector capable of handling and determining sulphur-and phosphorus-containing gaseous samples," 1994, pp. 225-232, Analytica Chimica Acta.

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