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1. WO2016090176 - CONTAMINANT DETECTION DEVICE AND METHOD

Publication Number WO/2016/090176
Publication Date 09.06.2016
International Application No. PCT/US2015/063809
International Filing Date 03.12.2015
IPC
G01N 27/06 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
02by investigating impedance
04by investigating resistance
06of a liquid
G01N 27/07 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
02by investigating impedance
04by investigating resistance
06of a liquid
07Construction of measuring vessels; Electrodes therefor
G01N 33/20 2006.1
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
20Metals
B41M 1/12 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
1Inking and printing with a printer's forme
12Stencil printing; Silk-screen printing
CPC
G01N 27/301
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
28Electrolytic cell components
30Electrodes, e.g. test electrodes; Half-cells
301Reference electrodes
G01N 27/302
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
28Electrolytic cell components
30Electrodes, e.g. test electrodes; Half-cells
302pH sensitive, e.g. quinhydron, antimony or hydrogen electrodes
G01N 27/308
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
28Electrolytic cell components
30Electrodes, e.g. test electrodes; Half-cells
308at least partially made of carbon
G01N 27/333
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
28Electrolytic cell components
30Electrodes, e.g. test electrodes; Half-cells
333Ion-selective electrodes or membranes
G01N 27/4115
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
403Cells and electrode assemblies
406Cells and probes with solid electrolytes
411for investigating or analysing of liquid metals
4115Composition or fabrication of the electrodes and coatings thereon, e.g. catalysts
G01N 27/4148
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
403Cells and electrode assemblies
414Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS
4148Integrated circuits therefor, e.g. fabricated by CMOS processing
Applicants
  • UWM RESEARCH FOUNDATION, INC. [US]/[US]
Inventors
  • GUNASEKARAN, Sundaram
  • CHANG, Woo-Jin
  • YANG, Jiang
  • SEENIVASAN, Rajesh
Agents
  • RIZZUTO, Kevin, P.
Priority Data
62/087,03203.12.2014US
62/145,82610.04.2015US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) CONTAMINANT DETECTION DEVICE AND METHOD
(FR) DISPOSITIF ET PROCÉDÉ DE DÉTECTION DE CONTAMINANT
Abstract
(EN) A device for measuring pH levels and contaminant concentration includes an electrode assembly that is electrically coupled to a control unit. The electrode assembly includes a first contact electrically coupled to a reference electrode, a second contact electrically coupled to a working electrode, and a third contact electrically coupled to a counter electrode. The working electrode may be modified to include a cysteine functionalized graphene oxide with polypyrrole nanocomposite. In operation, the control unit may apply a complex signal to the working electrode via the second contact in order to adhere and subsequently strip contaminant ions from the fluid sample to the working electrode. During this process, a current may be measured across the reference electrode and the counter electrode to measure contaminant ion concentration. The pH of the fluid sample may also be determined by a current measured across the reference electrode and the counter electrode. In some examples, the pH may be used to calibrate the measured levels of the contaminant ions.
(FR) La présente invention concerne un dispositif permettant de mesurer des niveaux de pH et de concentration de contaminant comprenant un ensemble d'électrodes qui sont couplées électriquement à une unité de commande. L'ensemble d'électrodes comprend un premier contact couplé électriquement à une électrode de référence, un deuxième contact couplé électriquement à une électrode de travail, et un troisième contact couplé électriquement à une contre-électrode. L'électrode de travail peut être modifiée pour comprendre un nanocomposite de polypyrrole et d'oxyde de graphène fonctionnalisé par une cystéine. Lors de l'utilisation, l'unité de commande peut appliquer un signal complexe à l'électrode de travail par l'intermédiaire du deuxième contact afin de faire adhérer à l'électrode de travail, et ensuite d'éliminer, les contaminants ioniques en provenance de l'échantillon de fluide. Pendant ce processus, un courant peut être mesuré entre l'électrode de référence et la contre-électrode pour mesurer la concentration en contaminants ioniques. Le pH de l'échantillon de fluide peut également être déterminé par un courant mesuré entre l'électrode de référence et la contre-électrode. Dans certains exemples, le pH peut être utilisé pour étalonner les niveaux mesurés des contaminants ioniques.
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