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:
Aug. 17, 1982
Filed:
Mar. 05, 1980
Yoshihiro Takahashi, San Jose, CA (US);
Xertex Corporation, Menlo Park, CA (US);
Abstract
An apparatus for determining total carbon in each one of a plurality of discrete liquid samples comprises a reactor (13), and a pump (12) and flowline (11) for maintaining a continuous flow of a liquid containing an oxidizing agent into the reactor (13). The liquid samples are introduced in succession into the reactor (13), either by means of a syringe injection port (19) in the flowline (11), or by means of a rotary valve (203) and sample loop (204) in a recirculation line (202) through which carbon-free liquid is withdrawn from and circulated back to the reactor (13). A mercury vapor lamp (17) is immersed in the liquid in the reactor (13) for irradiating the liquid sample and the oxidizing agent in the reactor (13) with ultraviolet energy in order to oxidize to carbon dioxide any carbonaceous matter in the liquid sample. A sparger (20) is provided to remove the carbon dioxide so produced from the reactor (13); and a carbon dioxide detector (24) is provided to measure the carbon dioxide produced as a result of the oxidation of carbonaceous matter in the reactor (13). Electronic integrator circuitry (25) provides a measure of total carbon present in the carbon dioxide produced in the time interval during which carbonaceous matter in each liquid sample is being oxidized.