公开(公告)号：US20230018859A1

公开(公告)日：2023-01-19

申请号：US17856816

申请日：2022-07-01

Applicant: Brewer Science, Inc.

Inventor： Jonathan J. Fury ,  Xi Cao ,  Austin Peters ,  Chad Lakin ,  Cody Simmons ,  Alec Neeson

IPC: G01N27/38 ,  G01N27/416 ,  G01N33/18 ,  G01N27/333

Abstract: A sensing platform for continuous water resource monitoring by electrochemical detection and solution parameter correction is provided. The sensing platform employs a solid-state electrolyte three-electrode cell, creating a high ionic strength environment within the solid-state electrolyte membrane, which is in ion exchange equilibria with the sampled solution. This device may be used as a standalone sensor in environments where the water parameters (pH temperature, and ionic strength) are controlled, or in concert with compensation sensors where water parameters are not controlled.

公开(公告)号：US20230176003A1

公开(公告)日：2023-06-08

申请号：US17856687

申请日：2022-07-01

Applicant: Brewer Science, Inc.

Inventor： Xi Cao ,  Christopher Landorf ,  Jonathan J. Fury ,  Cody Simmons ,  Weston Bowen

IPC: G01N27/30 ,  G01N27/333 ,  G01N33/18

CPC classification number: G01N27/301 ,  G01N27/333 ,  G01N33/1813

Abstract: Composites comprising metal-oxide-functionalized carbon nanotubes with metal nanoparticles deposited thereon are provided. These composites can be used as a working electrode in an electrochemical sensor to detect arsenite in aqueous solutions. The composite can electrochemically reduce As3+ to As0 due to increasing adsorption capability. In one embodiment, Au nanoparticles are deposited on the TiOx/CNT electrode to facilitate the adsorption of As3+ on the electrode surface for further electrochemical reduction process. Square wave voltammetry (SWV) is performed to detect the electrochemical reduction of arsenite in water.

公开(公告)号：US20230003684A1

公开(公告)日：2023-01-05

申请号：US17856932

申请日：2022-07-01

Applicant: Brewer Science, Inc.

Inventor： Jonathan J. Fury ,  Xi Cao ,  Christopher Landorf ,  Zun Chen ,  Alec Neeson ,  Weston Bowen ,  Austin Peters

IPC: G01N27/414 ,  G01N33/18 ,  G01N27/02

Abstract: A carbon nanotube (CNT) ion-selective field effect transistor (IS-FET) integrated device is used to detect nitrate ion in water. The device is operated as an IS-FET sensor, holding the measured potential between the drain electrode and an external reference electrode constant with a potentiometric circuit. Transduction occurs by changes in the effective CNT film gate potential with changes in the phase boundary potential of an ion-selective membrane (ISM) film. Moreover, the nitrate ISM film makes the device highly selective towards nitrate sensing. This printable IS-FET nitrate sensor enables real-time and high-resolution measurements and recording of nitrate ion in water at low cost.