公开(公告)号：US10684249B2

公开(公告)日：2020-06-16

申请号：US15529211

申请日：2015-12-03

Applicant: UWM Research Foundation, Inc.

Inventor： Sundaram Gunasekaran ,  Woo-Jin Chang ,  Jiang Yang ,  Rajesh Seenivasan

IPC: G01N27/327 ,  G01N27/411 ,  G01N27/42 ,  G01N27/416 ,  G01N27/30 ,  G01N27/414 ,  G01N33/18 ,  G01N27/333

Abstract: 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 working 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.

公开(公告)号：US20170363572A1

公开(公告)日：2017-12-21

申请号：US15529211

申请日：2015-12-03

Applicant: UWM Research Foundation, Inc.

Inventor： Sundaram Gunasekaran ,  Woo-Jin Chang ,  Jiang Yang ,  Rajesh Seenivasan

IPC: G01N27/411 ,  G01N27/30 ,  G01N27/414

CPC classification number: G01N27/4115 ,  G01N27/301 ,  G01N27/302 ,  G01N27/308 ,  G01N27/333 ,  G01N27/4148 ,  G01N27/4167 ,  G01N27/42 ,  G01N33/1813

Abstract: 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 FLUID 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.