Method and apparatus for detecting the concentration of a component in a solution
First Claim
1. A method for detecting the concentration of a component in a solution, comprising the steps ofplacing one of a first liquid and a second liquid containing a component soluble in said first liquid in a closed container having a partition formed at least partially by porous material having small through pores and having a critical surface tension which is lower than a surface tension of said first liquid when said component in said second liquid is dissolved therein,positioning the other of said first and second liquids outwardly of, and in contact with said partition formed by said porous material,detecting as a rate of pressure change in said closed container a rate of the mass transfer occurring between said first and second liquids through said partition of said porous material, anddetermining the concentration of said component from said rate of pressure change.
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Abstract
Method and apparatus for determination of the concentration of a component in a solution, such as ethyl alcohol in gasohol, acetic acid in hexane-acetic acid solution, or the like. Such determination is made with ease and accuracy based on a rate of pressure change caused in a closed container due to mass transfer occurring between two liquids through porous material.
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Citations
41 Claims
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1. A method for detecting the concentration of a component in a solution, comprising the steps of
placing one of a first liquid and a second liquid containing a component soluble in said first liquid in a closed container having a partition formed at least partially by porous material having small through pores and having a critical surface tension which is lower than a surface tension of said first liquid when said component in said second liquid is dissolved therein, positioning the other of said first and second liquids outwardly of, and in contact with said partition formed by said porous material, detecting as a rate of pressure change in said closed container a rate of the mass transfer occurring between said first and second liquids through said partition of said porous material, and determining the concentration of said component from said rate of pressure change.
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2. A method for detecting the concentration of a component in a solution, comprising the steps of
placing one of a first liquid and a second liquid containing a component soluble in said first liquid in a closed container having a partition formed at least partially by porous material in the shape of thin tubes having small through pores, positioning the other of said first and second liquids outwardly of, and in contact with said partition formed by said porous material, detecting as a rate of pressure change in said closed container a rate of the mass transfer occurring between said first and second liquids through said partition of said porous material, and determining the concentration of said component from said rate of pressure change.
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15. An apparatus for detecting the concentration of a component in a solution comprising
a closed container for enclosing one of a first liquid and a second liquid containing a component soluble in said first liquid, having a partition formed at least partially by porous material, said porous material having small through pores and having a critical surface tension which is lower than a surface tension of said first liquid when said component in said second liquid is dissolved therein, and a pressure detecting means for detecting the rate of the mass transfer occurring through said partition of said closed container as a rate of pressure change in said closed container.
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16. An apparatus for detecting the concentration of a component in a solution by placing a first liquid on one side of a partition formed by porous material in the shape of thin tubes having small through pores, and a second liquid containing a component soluble in said first liquid on the other side of said partition, and determining the concentration of said component in said second liquid from a rate of the mass transfer occurring between said first and second liquids through said partition of said porous material, comprising
a closed container having a least a portion of its partition formed by said porous material, and a pressure detecting means for detecting the rate of the mass transfer occurring through said partition of said closed container as a rate of pressure change in said closed container.
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28. A method for detecting the concentration of a component in a solution, comprising the steps of
placing one of a first liquid and a second liquid containing a component soluble in said first liquid in a closed container having a partition formed at least partially by porous material having small through pores wherein the side of said through pores of said porous material is from several tens of angstroms to several tens of micro-meters, positioning the other of said first and second liquids outwardly of, and in contact with said partition formed by said porous material, detecting as a rate of pressure change in said closed container a rate of the mass transfer occurring between said first and second liquids through said partition of said porous material, and determining the concentration of said component from said rate of pressure change.
Specification