WO2007081616A3 - Method and apparatus for measuring the concentration of chlorine dioxide and other gas and liquid solutions - Google Patents

Method and apparatus for measuring the concentration of chlorine dioxide and other gas and liquid solutions Download PDF

Info

Publication number
WO2007081616A3
WO2007081616A3 PCT/US2006/061394 US2006061394W WO2007081616A3 WO 2007081616 A3 WO2007081616 A3 WO 2007081616A3 US 2006061394 W US2006061394 W US 2006061394W WO 2007081616 A3 WO2007081616 A3 WO 2007081616A3
Authority
WO
WIPO (PCT)
Prior art keywords
concentration
gas
measuring
chlorine dioxide
liquid solutions
Prior art date
Application number
PCT/US2006/061394
Other languages
French (fr)
Other versions
WO2007081616A2 (en
Inventor
Thomas Mcwhorter
Aaron Rosenblatt
Andrew E Hospador
Madhu Anand
John Peter Hobbs
Original Assignee
Cdg Technology Inc
Thomas Mcwhorter
Aaron Rosenblatt
Andrew E Hospador
Madhu Anand
John Peter Hobbs
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cdg Technology Inc, Thomas Mcwhorter, Aaron Rosenblatt, Andrew E Hospador, Madhu Anand, John Peter Hobbs filed Critical Cdg Technology Inc
Publication of WO2007081616A2 publication Critical patent/WO2007081616A2/en
Publication of WO2007081616A3 publication Critical patent/WO2007081616A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/0332—Cuvette constructions with temperature control

Abstract

The spectrophotometer apparatus of the present invention provides a system for measuring the concentration of at least one component in a fluid, for example, the concentration of chlorine dioxide in a liquid or a gas. The spectrophotometer generally includes at least one light emitting diode (LED), a photoreceptor, and a sample cell, which can accommodate either a sample fluid or gas.
PCT/US2006/061394 2005-11-30 2006-11-30 Method and apparatus for measuring the concentration of chlorine dioxide and other gas and liquid solutions WO2007081616A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74096705P 2005-11-30 2005-11-30
US60/740,967 2005-11-30

Publications (2)

Publication Number Publication Date
WO2007081616A2 WO2007081616A2 (en) 2007-07-19
WO2007081616A3 true WO2007081616A3 (en) 2007-12-13

Family

ID=38256834

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/061394 WO2007081616A2 (en) 2005-11-30 2006-11-30 Method and apparatus for measuring the concentration of chlorine dioxide and other gas and liquid solutions

Country Status (1)

Country Link
WO (1) WO2007081616A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101806721B (en) * 2010-03-08 2012-05-23 程扬波 Portable instanteanous tester for concentration of chlorine dioxide solution

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857735A (en) * 1987-10-23 1989-08-15 Noller Hans G Light emitting diode spectrophotometer
US6791689B1 (en) * 1998-04-14 2004-09-14 Instrumentarium Corp. Sensor assembly and method for measuring nitrogen dioxide

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857735A (en) * 1987-10-23 1989-08-15 Noller Hans G Light emitting diode spectrophotometer
US6791689B1 (en) * 1998-04-14 2004-09-14 Instrumentarium Corp. Sensor assembly and method for measuring nitrogen dioxide

Also Published As

Publication number Publication date
WO2007081616A2 (en) 2007-07-19

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