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1. WO2002021123 - IMPROVEMENTS IN INSTRUMENTS FOR MEASURING THE TOTAL ORGANIC CARBON CONTENT OF WATER

Publication Number WO/2002/021123
Publication Date 14.03.2002
International Application No. PCT/US2001/042055
International Filing Date 06.09.2001
Chapter 2 Demand Filed 05.04.2002
IPC
G01N 33/18 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
18Water
CPC
G01N 33/1846
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
18Water
1826organic contamination in water
1846Total carbon analysis
G01N 33/1893
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
18Water
1893using flow cells
Y10T 436/117497
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
436Chemistry: analytical and immunological testing
11Automated chemical analysis
117497with a continuously flowing sample or carrier stream
Y10T 436/23
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
436Chemistry: analytical and immunological testing
23Carbon containing
Y10T 436/235
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
436Chemistry: analytical and immunological testing
23Carbon containing
235In an aqueous solution [e.g., TOC, etc.]
Applicants
  • ANATEL CORPORATION [US]/[US]
Inventors
  • BLADES, Frederick, K.
  • STILLIAN, John
  • PANE, David, Allen
  • YAMAMORI, Yasuo
  • RASMUSSEN, Jay, Darol
Agents
  • WINTER, Gene, S.
Priority Data
09/655,85406.09.2000US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) IMPROVEMENTS IN INSTRUMENTS FOR MEASURING THE TOTAL ORGANIC CARBON CONTENT OF WATER
(FR) PERFECTIONNEMENTS APPORTES A DES INSTRUMENTS DE MESURE DE LA TENEUR TOTALE EN CARBONE ORGANIQUE DE L'EAU
Abstract
(EN)
An improved instrument, method and a circuit for measuring the total organic carbon (TOC) content of water, using UV radiation (UV lamps 50 and 62) combines a 'static sample part' (42) and a 'continuous flow module' (44). This provides substantially instantanous TOC measurements that are repetitively calibrated, as well as improved accuracy of results in a circuit, which provides improved noise rejection and a faster response. also the instrument provides controlled dilution of the sample stream to extent the useful range of the instrument.
(FR)
L'invention concerne un instrument amélioré, un procédé et un circuit servant à mesurer la teneur totale en carbone organique (TOC) de l'eau à l'aide de rayonnement UV (lampes UV 50 et 62), qui combine une partie (42) d'échantillon statique et un module (44) d'écoulement continu (fig. 1). Ce système permet d'obtenir des mesures quasiment instantanées de TOC qui sont étalonnées de manière répétée, et une précision accrue des résultats dans un circuit, ce qui assure un rejet de bruit accru et une réponse plus rapide. L'instrument permet également une dilution réglée de l'écoulement échantillon pour augmenter la gamme utile de l'instrument.
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