The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2013
Filed:
Mar. 29, 2011
Yan Liu, Palo Alton, CA (US);
Kannan Srinivasan, Tracy, CA (US);
Christopher A. Pohl, Union City, CA (US);
Sheetal Bhardwaj, Fremont, CA (US);
Zhongqing LU, Fremont, CA (US);
Yan Liu, Palo Alton, CA (US);
Kannan Srinivasan, Tracy, CA (US);
Christopher A. Pohl, Union City, CA (US);
Sheetal Bhardwaj, Fremont, CA (US);
Zhongqing Lu, Fremont, CA (US);
Dionex Corporation, Sunnyvale, CA (US);
Abstract
A chromatographic method including chromatographically separating sample ionic species in an eluent stream, detecting the separated sample ionic species, catalytically combining hydrogen and oxygen gases or catalytically decomposing hydrogen peroxide in a catalytic gas elimination chamber, and recycling the effluent stream from the chamber to the chromatography separation column. The residence time between the detector and the chamber is at least about one minute. Also, flowing the recycle sequentially through two detector effluent flow channels of an electrolytic membrane suppressor. Also, applying heat or UV energy between the detector and the chamber. Also, detecting bubbles after the chamber. Also, a Platinum group metal catalyst and ion exchange medium in the chamber. Apparatus for performing the methods.