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1. CA2968888 - CONTAMINANT DETECTION DEVICE AND METHOD

Office
Canada
Application Number 2968888
Application Date 03.12.2015
Publication Number 2968888
Publication Date 09.06.2016
Publication Kind A1
IPC
G01N 27/416
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
26by investigating electrochemical variables; by using electrolysis or electrophoresis
416Systems
B41M 1/12
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
G01N 1/40
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
28Preparing specimens for investigation
40Concentrating samples
G01N 27/403
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
26by investigating electrochemical variables; by using electrolysis or electrophoresis
403Cells and electrode assemblies
G01N 27/42
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
26by investigating electrochemical variables; by using electrolysis or electrophoresis
416Systems
42Measuring deposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte
CPC
G01N 27/4167
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
416Systems
4166measuring a particular property of an electrolyte
4167pH
G01N 27/42
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
416Systems
42Measuring deposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte
G01N 33/1813
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
1813specific cations in water, e.g. heavy metals
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 27/302
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
Applicants UWM RESEARCH FOUNDATION, INC.
Inventors GUNASEKARAN, SUNDARAM
CHANG, WOO-JIN
YANG, JIANG
SEENIVASAN, RAJESH
Priority Data 62/087,032 03.12.2014 US
62/145,826 10.04.2015 US
Title
(EN) CONTAMINANT DETECTION DEVICE AND METHOD
(FR) DISPOSITIF ET PROCEDE DE DETECTION 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.