WO2008077191A8 - Improved water analysis - Google Patents

Improved water analysis Download PDF

Info

Publication number
WO2008077191A8
WO2008077191A8 PCT/AU2007/001987 AU2007001987W WO2008077191A8 WO 2008077191 A8 WO2008077191 A8 WO 2008077191A8 AU 2007001987 W AU2007001987 W AU 2007001987W WO 2008077191 A8 WO2008077191 A8 WO 2008077191A8
Authority
WO
WIPO (PCT)
Prior art keywords
working electrode
electrode
water sample
illuminating
recording
Prior art date
Application number
PCT/AU2007/001987
Other languages
French (fr)
Other versions
WO2008077191A1 (en
Inventor
Huijun Zhao
Shanqing Zhang
Original Assignee
Aqua Diagnostic Pty Ltd
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
Priority claimed from AU2006907134A external-priority patent/AU2006907134A0/en
Application filed by Aqua Diagnostic Pty Ltd filed Critical Aqua Diagnostic Pty Ltd
Priority to JP2009541696A priority Critical patent/JP2010513874A/en
Priority to EP07845425A priority patent/EP2095108A1/en
Priority to BRPI0721046-9A priority patent/BRPI0721046A2/en
Priority to US12/520,227 priority patent/US20110073495A1/en
Priority to AU2007336706A priority patent/AU2007336706B2/en
Priority to CA002672645A priority patent/CA2672645A1/en
Publication of WO2008077191A1 publication Critical patent/WO2008077191A1/en
Publication of WO2008077191A8 publication Critical patent/WO2008077191A8/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G01N33/1806—Biological oxygen demand [BOD] or chemical oxygen demand [COD]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/28—Electrolytic cell components
    • G01N27/30—Electrodes, e.g. test electrodes; Half-cells

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Molecular Biology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Emergency Medicine (AREA)
  • Biomedical Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

A method of determining chemical oxygen demand (COD) of a water sample which is useful in a probe configuration includes the steps of a) applying a constant potential bias to a photoelectrochemical cell, having a photoactive working electrode optionally a reference electrode and a counter electrode, and containing a supporting electrolyte solution; b) illuminating the working electrode with a light source and recording the background photocurrent produced at the working electrode from the supporting electrolyte solution; c) adding a water sample, to be analysed, to the photoelectrochemical cell; d) illuminating the working electrode with a light source and recording the steady state photocurrent produced with the sample; e) determining the chemical oxygen demand of the water sample using the formula (I): where δ is the Nernst diffusion layer thickness, D is the diffusion coefficient, A is the electrode area, F the Faraday constant and iss the steady state photocurrent. The method can accommodate a broad range of light intensity and pH.
PCT/AU2007/001987 2006-12-22 2007-12-21 Improved water analysis WO2008077191A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2009541696A JP2010513874A (en) 2006-12-22 2007-12-21 Improved water quality analysis
EP07845425A EP2095108A1 (en) 2006-12-22 2007-12-21 Improved water analysis
BRPI0721046-9A BRPI0721046A2 (en) 2006-12-22 2007-12-21 IMPROVED WATER ANALYSIS
US12/520,227 US20110073495A1 (en) 2006-12-22 2007-12-21 Water analysis
AU2007336706A AU2007336706B2 (en) 2006-12-22 2007-12-21 Improved water analysis
CA002672645A CA2672645A1 (en) 2006-12-22 2007-12-21 Improved water analysis

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU200607134 2006-12-22
AU2006907134A AU2006907134A0 (en) 2006-12-22 Improved water Analysis
AU2006907134 2006-12-22

Publications (2)

Publication Number Publication Date
WO2008077191A1 WO2008077191A1 (en) 2008-07-03
WO2008077191A8 true WO2008077191A8 (en) 2009-12-03

Family

ID=39562033

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2007/001987 WO2008077191A1 (en) 2006-12-22 2007-12-21 Improved water analysis

Country Status (10)

Country Link
EP (1) EP2095108A1 (en)
JP (1) JP2010513874A (en)
KR (1) KR20090101188A (en)
CN (1) CN101563602A (en)
AU (1) AU2007336706B2 (en)
BR (1) BRPI0721046A2 (en)
CA (1) CA2672645A1 (en)
TW (1) TW200842354A (en)
WO (1) WO2008077191A1 (en)
ZA (1) ZA200904290B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102331447A (en) * 2011-04-27 2012-01-25 河北先河环保科技股份有限公司 Method and equipment for measuring chemical oxygen demand by photocatalytic oxidation process
RU2555774C2 (en) * 2013-11-28 2015-07-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Омский государственный университет им. Ф.М. Достоевского" Water state indication method
TWM496760U (en) * 2014-11-05 2015-03-01 Univ Chaoyang Technology Chemical oxygen demand inspection device
KR101639616B1 (en) * 2014-12-15 2016-07-15 한국기계연구원 Photo-electorde for tandem structure photoelectrochemical cell comprising metal ultra-thin layer and photoelectrochemical cell comprising the same
CN105044180B (en) * 2015-06-29 2017-11-17 江苏大学 A kind of preparation method and purposes of heterojunction photovoltaic pole
CN105116040B (en) * 2015-08-25 2018-05-08 广西壮族自治区农业科学院农产品质量安全与检测技术研究所 Optical electro-chemistry reaction tank
CN105203527B (en) * 2015-09-11 2018-03-23 山东师范大学 The optical electro-chemistry detection means and its application method of a kind of double detection cells
CN106970131B (en) * 2017-03-28 2019-01-18 北京北大明德科技发展有限公司 A kind of photoelectrocatalysis type water-soluble organic compound concentration sensor and preparation method
CN108845004B (en) * 2018-06-15 2020-10-13 浙江大学 Photocurrent carbon dioxide sensor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003901589A0 (en) * 2003-04-04 2003-05-01 Griffith University Novel photoelectrichemical oxygen demand assay

Also Published As

Publication number Publication date
KR20090101188A (en) 2009-09-24
EP2095108A1 (en) 2009-09-02
CN101563602A (en) 2009-10-21
TW200842354A (en) 2008-11-01
AU2007336706A1 (en) 2008-07-03
ZA200904290B (en) 2010-04-28
BRPI0721046A2 (en) 2014-07-29
CA2672645A1 (en) 2008-07-03
JP2010513874A (en) 2010-04-30
AU2007336706B2 (en) 2010-09-02
WO2008077191A1 (en) 2008-07-03

Similar Documents

Publication Publication Date Title
WO2008077191A8 (en) Improved water analysis
Jolley et al. Flow injection analysis with diamond thin-film detectors
Brown et al. A direct and selective electrochemical hydrogen sulfide sensor
Kraikaew et al. Ultrasensitive seawater pH measurement by capacitive readout of potentiometric sensors
DE602007012749D1 (en) REAGENT FORMULATION WITH RUTHENIUM HEXAMINE AS A METHOD FOR ELECTROCHEMICAL TEST STRIPS
Bartlett et al. Voltammetry and determination of metronidazole at a carbon fiber microdisk electrode
NO20063939L (en) Oxidizable species as an internal reference for biosensors and methods of use
MX347099B (en) Transient decay amperometry.
Saha et al. A colorimetric and fluorometric BODIPY probe for rapid, selective detection of H 2 S and its application in live cell imaging
WO2006023725A3 (en) FLUORESCENT pH DETECTOR SYSTEM AND RELATED METHODS
CA2582952A1 (en) Methods and apparatus for analyzing a sample in the presence of interferents
HK1133458A1 (en) Method for determining hematocrit corrected analyte concentrations
MXPA02010106A (en) Determination of sample volume adequacy in biosensor devices.
ATE532063T1 (en) ELECTROCHEMICAL BIOSENSOR
SG111139A1 (en) Mediator stabilized reagent compositions and methods for their use in electrochemical analyte detection assays
ATE526333T1 (en) REAGENTS FOR DETECTING HYPOCHLOROUS ACID
Pujol-Vila et al. Portable and miniaturized optofluidic analysis system with ambient light correction for fast in situ determination of environmental pollution
Koshida et al. Fluorescence biosensing system with a UV-LED excitation for l-leucine detection
Nielsen et al. Hydrogen microsensors with hydrogen sulfide traps
Mortimer et al. Potentiometric determination of potassium cations using a nickel (II) hexacyanoferrate-modified electrode
Zhang et al. Correlation between cell growth rate and glucose consumption determined by electrochemical monitoring
Huck et al. Combined amperometric/field-effect sensor for the detection of dissolved hydrogen
Ye et al. Acetone biosensor based on fluorometry of reduced nicotinamide adenine dinucleotide consumption in reversible reaction by secondary alcohol dehydrogenase
CN201974383U (en) Pulse optical source fibre oxygen detector
Bahramipur et al. Voltammetric determination of captopril using chlorpromazine as a homogeneous mediator

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200780047231.6

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07845425

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2007336706

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 2672645

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2007845425

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2009541696

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 1020097012739

Country of ref document: KR

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2007336706

Country of ref document: AU

Date of ref document: 20071221

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2656/KOLNP/2009

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 12520227

Country of ref document: US

ENP Entry into the national phase

Ref document number: PI0721046

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20090619