Reservoir chemical sensors
First Claim
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1. A reservoir chemical sensor comprising:
- a modular reservoir cell body made of acetal theremoplastic polymer;
a sensing reagent in the cell body;
species communication means formed in the cell body for passing a species of interest into the cell body to interact with the sensing reagent.a light source positioned at one end of the cell body to illuminate the interior of the cell body;
a detector positioned at an opposed end of the cell body to detect effects produced by the interaction of the species of interest with the sensing reagent;
an adaptor means at each end of he cell for mounting and aligning the light source and detector to the cell body.
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Abstract
Single or multi-cell reservoir sensors with single illumination sources and one or more detectors per cell unit have an arrangement whereby a gaseous, vapor or liquid sample enters the cell body and interacts with a sensing solution to detect and quantify a given species. Entrance of the sample into the sensor is through an opening in the cell body which may be covered with a membrane to contain the sensing reagent and to presort the species entering the cell. Reservoir cells can be used with organic, inorganic or biochemical sensing materials. A variety of sensors as alcohol, drugs of abuse, organic halides, cyanide and inorganic ions are provided.
386 Citations
50 Claims
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1. A reservoir chemical sensor comprising:
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a modular reservoir cell body made of acetal theremoplastic polymer; a sensing reagent in the cell body; species communication means formed in the cell body for passing a species of interest into the cell body to interact with the sensing reagent. a light source positioned at one end of the cell body to illuminate the interior of the cell body; a detector positioned at an opposed end of the cell body to detect effects produced by the interaction of the species of interest with the sensing reagent; an adaptor means at each end of he cell for mounting and aligning the light source and detector to the cell body. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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4. The sensor of claim wherein the window has a surface energy which matches the surface tension of the reagent solution to prevent bubble formation.
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18. A reservoir chemical sensor comprising:
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a modular reservoir cell body; a sensing reagent in the cell body; species communication means formed in the cell body for passing a species of interest into the cell body to interact with the sensing reagent; a light source positioned at one end of the cell body to illuminate the interior of the cell body; a detector positioned at an opposed end of the cell body and aligned with the light source along a cell axis top detect effects produced by the interaction of the species of interest with the sensing reagent; at least one additional detector mounted to the cell body and aligned in a direction substantially at a right angle to the cell axis; an adapter means for mounting and aligning each light source and detector to the cell body.
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19. A reservoir chemical sensor comprising:
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a modular reservoir cell body; a sensing reagent in the cell body; species communication means formed in the cell body for passing a species of interest into the cell body to interact with the sensing reagent wherein the species communication means comprises a flow-through port on a lateral surface of the cell body and a species-permeable, sensing-reagent-impermeable membrane across the flow-through port and a membrane retaining means for holding the membrane in place across the flow-through port and maintaining a liquid tight seal; a light source positioned at one end of the cell body to illuminate the interior of the cell body; a detector positioned at an opposed end of the cell body to detect effects produced by the interaction of the species of interest with the sensing reagent; an adapter means at each end of the cell for mounting and aligning the light source and detector to the cell body; wherein the membrane and sensing reagent are selected from the group consisting of the following combinations; (a) the membrane is a hydrogen ion/hydronium ion permeable membrane and the sensing reagent is a pH sensitive absorption dye in combination with eosin; (b) the membrane is an arsenic ion permeable membrane and the sensing reagent is selected from thorium-morin chelate, a luminol-(NH4)2 MoO4 -NH4 NO3 mixture, an ammonium molybdate/stannous chloride mixture and an N-ethyl-8-hydroxtetrahydroquinoline/ferric chloride mixture; (c) the membrane is selected form high density polyethylene, high density polypropylene and fluorinated forms thereof, and the sensing reagent is a solvent for benzene with refractive index lower than benzene; (d) the membrane is a cyanide permeabel membrane and the sensing reagent is p-benzene; (e) the membrane is a hydrazine permeable membrane and the sensing reagent is cupric neocuprine solution; (f) the membrane is a cupric ion permeable membrane and the sensing reagent is selected form 2,2'"'"'-dipyridylketone hydrazone solution and lumpocupferron solution; (g) the membrane is a trichloroethylene permeable silicone polymer and the sensing reagent is a solvent for trichloroethylene with refractive index lower than trichloroethylene; (h) the membrane is a mercuric ion permeable membrane and the sensing reagent is selected form 2,2'"'"'-dipyridylketone hydrazone solution and indole-3- propionic acid; (i) the membrane is an iron(2+) permeable membrane and the sensing reagent is ferozine solution; (j) the membrane is a chromium permeate membrane and the sensing reagent is selected from bis)2,4,6 trichlorophenyl) oxalate-H2 O2 -per-5ylene, acidified diphenycarbazide, and a lophine/KOH/H2 O2 mixture; (k) the membrane is a selenium permeable membrane and the sensing reagent is selected form 2,3 napthothriazole and a 1,10 phenanthroline/eosin mixture; (m) the membrane is a gold permeable membrane and the sensing reagent is selected form butylrodamein B/chloride mixture and 5-hydrosy-2-hydroxmethyl-1,4-pyrone; (n) the membrane is a calcium permeable membrane and the sensing reagent is N-(4methylumbelliferone-8-methyl)-1,10-diazo-18-crown-6; - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A reservoir chemical sensor comprising:
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a modular reservoir cell body; a sensing reagent in the cell body; species communication means formed in the cell body for passing a species of interest into the cell body to interact with the sensing reagent and comprising a lateral sample inlet port and an opposed lateral outlet port on opposed lateral surfaces of the cell body for passing sample through the cell body; a lateral sensing reagent inlet port on a lateral surface of the cell body for replenishing reagent in the cell body; valves placed in the inlet and outlet ports to regulate or control flow; a light source positioned at one end of the cell body to illuminate the interior of the cell body; a detector positioned at an opposed end of the cell body to detect effects produced by the interaction of the species of interest with the sensing reagent; an adapter means at each end of the cell for mounting and aligning the light source and detector to the cell body.
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46. A reservoir chemical sensor comprising:
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a modular reservoir cell body comprising adjacent cell body sections and a semi-permeable membrane mounted between adjacent cell body sections to form adjacent cell body chambers; a sensing reagent in the cell body; species communication means formed in the cell body for passing a species of interest into the cell body to interact with the sensing reagent; a light source positioned at one end of the cell body to illuminate the interior of the cell body; a detector positioned at an opposed end of the cell body to detect effects produced by the interaction of the species of interest with the sensing reagent; an adapter means at each end of the cell for mounting and aligning the light source and detector to the cell body; wherein the sensing reagent further comprises a first reagent in one cell body chamber and a second reagent in a second cell body chamber, wherein the first reagent is reactive with the species of interest to form a reaction product, and the second reagent is reactive to the reaction product, and the membrane is permeable to the reaction product and impermeable to the first and second reagents. - View Dependent Claims (47, 48, 49, 50)
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Specification