Claims
- 1. In a method of reagent addition to an effluent stream in liquid chromatography wherein the stream is under pressure, comprising the steps of contacting the effluent stream with one side of a two sided liquid and reagent permeable membrane, contacting the other side of the membrane with a liquid mobile reagent contained in a chamber, wherein the improvement comprises the step of: pressurizing the mobile reagent by essentially completely filling the chamber with the mobile reagent and hermetically sealing the chamber, so that permeatiion of effluent across the membrane into the mobile reagent pressurizes the mobile reagent and so that the mobile reagent can be permeated into the effluent stream.
- 2. The method of claim 1 wherein the membrane is tubular in shape.
- 3. The method of claim 1 wherein the membrane is flat in shape.
- 4. The method of claim 1 wherein the membrane comprises a polyolefin material.
- 5. In a method of reagent addition to a carrier stream in flow injection analysis wherein the stream is under pressure, comprising the steps of contacting the carrier stream with one side of a two sided liquid and reagent permeable membrane, contacting the other side of the membrane with a liquid mobile reagent contained in a chamber, wherein the improvement comprises the step of: pressurizing the mobile reagent by essentially completely filling the chamber with the mobile reagent and hermetically sealing the chamber, so that permeation of carrier across the membrane into the mobile reagent pressurizes the mobile reagent and so that the mobile reagent can be permeated into the carrier stream.
- 6. The method of claim 5 wherein the membrane is tubular in shape.
- 7. The method of claim 5 wherein the membrane is flat in shape.
- 8. The method of claim 5 wherein the membrane comprises a polyolefin material.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of copending application Ser. No. 725,861, filed Apr. 22, 1985, now abandoned, application Ser. No. 709,141, filed Mar. 7, 1985 and application Ser. No. 707,772, filed Mar. 4, 1985, now abandoned which are hereby incorporated by reference. Application Ser. No. 707,772, filed Mar. 4, 1985, now abandoned, was continued as application Ser. No. 015,830, filed Feb. 18, 1987, now abandoned.
US Referenced Citations (12)
Foreign Referenced Citations (1)
Number |
Date |
Country |
8200773 |
Mar 1982 |
WOX |
Non-Patent Literature Citations (1)
Entry |
Nau et al, Anal. Chem., vol. 51, No. 3, pp. 424-428, 1979. |
Continuations (1)
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Number |
Date |
Country |
Parent |
15830 |
Feb 1987 |
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Continuation in Parts (1)
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Number |
Date |
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Parent |
725861 |
Apr 1985 |
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