Hydrogen peroxide detector comprising light-blocking tip with air deflector
First Claim
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1. An apparatus for detecting vapor-phase hydrogen peroxide, said apparatus comprising:
- a housing having a passageway therethrough, said passageway comprising a portion having a non-linear path;
an inlet for receiving a vapor-phase sample in fluid communication with said passageway;
an outlet in fluid communication with said passageway;
a pump in fluid communication with said passageway, said pump suitable for drawing the vapor-phase sample from the exterior of said housing into said passageway;
a sensing assembly arranged within the housing and in fluid communication with said passageway, said sensing assembly comprising a glass capillary comprising a chemiluminescent material, and an optical light detector, said chemiluminescent material having at least component reactive with hydrogen peroxide; and
a light-blocking tip arranged within the housing, wherein the light blocking tip comprises the inlet and an air deflector component which forms the non-linear path within the light-blocking tip such that the vapor-phase sample entering the inlet is forced through the non-linear path and ambient light is substantially precluded from contacting the sensing assembly.
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Abstract
The current invention provides a detector and method suitable for sensing vapor-phase hydrogen peroxide. The detector utilizes a chemiluminescent material comprising a peroxide reactive compound, a dye and a solvent. Upon reaction with hydrogen peroxide, the chemiluminescent material will generate detectible light.
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16 Claims
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1. An apparatus for detecting vapor-phase hydrogen peroxide, said apparatus comprising:
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a housing having a passageway therethrough, said passageway comprising a portion having a non-linear path; an inlet for receiving a vapor-phase sample in fluid communication with said passageway; an outlet in fluid communication with said passageway; a pump in fluid communication with said passageway, said pump suitable for drawing the vapor-phase sample from the exterior of said housing into said passageway; a sensing assembly arranged within the housing and in fluid communication with said passageway, said sensing assembly comprising a glass capillary comprising a chemiluminescent material, and an optical light detector, said chemiluminescent material having at least component reactive with hydrogen peroxide; and a light-blocking tip arranged within the housing, wherein the light blocking tip comprises the inlet and an air deflector component which forms the non-linear path within the light-blocking tip such that the vapor-phase sample entering the inlet is forced through the non-linear path and ambient light is substantially precluded from contacting the sensing assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification