Method and apparatus for improved gas detection

• US 6,932,941 B2
• Filed: 03/26/2003
• Issued: 08/23/2005
• Est. Priority Date: 11/19/1999
• Status: Expired due to Fees

• Current Assignee: PerkinElmer LAS, Inc. (Perkinelmer Incorporated)
• Original Assignee: Perkinelmer Instruments LLC (Revvity, Inc.)
• Inventors: Clark, David, Dalmia, Avinash, Prohaska, Otto J.
• Primary Examiner(s): NAGPAUL, JYOTI
• Application Number:
  US10/397,757
• Publication Number:
  US 20030164310A1
• Time in Patent Office: 881 Days
• Field of Search: 422/130, 422/98, 422/99, 422/89, 422/83, 422/54, 422/52, 422/100, 436/123, 436/161, 436/172, 204/409, 204/424
• US Class Current: 422/83
• CPC Class Codes: G01N 2030/125 pyrolising
• CPC Class Codes: G01N 2030/645 electrical conductivity detectors
• CPC Class Codes: G01N 31/12 using combustion G01N25/20 takes precedence
• CPC Class Codes: Y10T 436/188 Total or elemental sulfur
• CPC Class Codes: Y10T 436/25 including sample preparation
• CPC Class Codes: Y10T 436/2575 Volumetric liquid transfer

Abstract

The invention relates to a method and apparatus for providing a reactor having a heater, a passage for transporting a reactant, and a chamber containing a gas sample and being coupled to the passage for receiving the reactant and mixing the reactant with the gas sample. The reactor further includes a connector leading from the chamber to the heater for transporting a mixture of the reactant and gas sample, and wherein the heater heats the mixture of the reactant and gas sample.

Claims

1. A reactor, comprising:

a heater;

a first passage for transporting a first reactant;

a second passage for transporting a second reactant;

a connector leading from said first passage to said heater for transporting a mixture of the first reactant and gas sample contained within said connector;

said second passage coupled to said connector for transporting the second reactant to the mixture of the first reactant and gas sample;

said connector is placed within said second passage; and

wherein said heater heats the mixture of the first reactant and as sample and, subsequently, the mixture of the first reactant, second reactant, and gas sample.

2. The reactor according to claim 1, wherein said second passage is concentric with said connector.

3. The reactor according to claim 1, wherein said connector is coupled to an outlet.

4. The reactor according to claim 3, further comprising a electrochemical gas sensor coupled to an outlet for detecting a gas component in the gas sample.

5. The reactor according to claim 4, wherein said electrochemical gas sensor comprises a substrate having a substrate, an electrode deposited on a surface of the substrate, an ionomer membrane in contact with the surface and electrode, the ionomer membrane having a first surface and a second surface, and an opening in the ionomer membrane extending from the first surface to the second surface in a location proximate to the electrode, thereby defining a passage for providing diffusion control for the gas.

6. A reactor, comprising:

a heater having a proximal end and a distal end;

a first passage for transporting a first reactant;

a second passage for transporting a second reactant;

a connector containing a gas sample and being coupled to said first passage at said proximal end for receiving the first reactant and mixing the first reactant with the gas sample;

said connector extending from said proximal end through said eater to said distal end, and coupling to said second passage for receiving the second reactant and mixing the first reactant and gas sample with the second reactant; and

said second passage passing from said distal end through said heater to said proximal end, whereby the second reactant, first reactant, and gas sample are heated by said heater.

7. The reactor according to claim 6, further comprising a electrochemical gas sensor coupled to said second passage for detecting a gas component in the gas sample.