Method and apparatus for improved gas detection

• US 7,736,908 B2
• Filed: 08/12/2008
• Issued: 06/15/2010
• Est. Priority Date: 11/19/1999
• Status: Expired due to Fees

• Current Assignee: PerkinElmer LAS, Inc. (Perkinelmer Incorporated)
• Original Assignee: PerkinElmer LAS, Inc. (Perkinelmer Incorporated)
• Inventors: Clark, David, Dalmia, Avinash, Prohaska, Otto J.
• Primary Examiner(s): Nagpaul; Jyoti
• Application Number:
  US12/189,923
• Publication Number:
  US 20080293158A1
• Time in Patent Office: 672 Days
• Field of Search: 422 99-100, 422/130, 422/52, 422/54, 436/123, 436/161, 436/172, 436/180
• US Class Current: 436/180
• 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 method for providing a reaction mixture for analysis, comprising the steps of:

providing a first passage containing a first reactant;

providing a second passage containing a second reactant;

placing a connector containing a sample leading from the first passage within the second passage;

connecting a heater to the second passage;

transporting a mixture of the first reactant and sample from the first passage to the connector;

transporting the second reactant to the mixture of the first reactant and sample; and

heating the mixture of the first reactant and sample and, subsequently, heating the mixture of the first reactant, second reactant, and sample, wherein said heating is through use of the heater.

2. The method according to claim 1, further comprising the step of placing the connector and the second passage concentric with one another.

3. The method according to claim 1, further comprising the step of coupling the connector to an outlet.

4. The method according to claim 3, further comprising the step of coupling an electrochemical gas sensor to the outlet for detecting a gas component in the sample.

5. A method of providing a reaction mixture for analysis, comprising the steps of:

providing a first passage containing a first reactant;

connecting a connector to the first passage, where the connector contains a sample;

transporting the first reactant from the first passage to the connector for mixing the first reactant with the sample;

extending the connector through a heater;

coupling a second passage to the connector, where the second passage contains a second reactant;

mixing the first reactant and sample with the second reactant;

extending the second passage through the heater; and

heating the mixture of the first reactant and sample and, subsequently, heating the first reactant, second reactant, and sample in the heater.

6. The method according to claim 5, further comprising the step of coupling an electrochemical gas sensor to the second passage for detecting a gas component in the sample.