US 12,282,001 B2
Systems, devices, and methods for electrochemical water analysis
Yu Pei, Kingston (CA); Zhe She, Kingston (CA); and Sarah Jane Odessa Payne, Kingston (CA)
Assigned to Queen's University at Kingston, Kingston (CA)
Filed by Queen's University at Kingston, Kingston (CA)
Filed on Feb. 28, 2023, as Appl. No. 18/115,344.
Claims priority of provisional application 63/315,192, filed on Mar. 1, 2022.
Prior Publication US 2023/0280309 A1, Sep. 7, 2023
Int. Cl. G01N 33/18 (2006.01); G01N 29/036 (2006.01); G01N 29/24 (2006.01)
CPC G01N 29/036 (2013.01) [G01N 29/2443 (2013.01); G01N 33/18 (2013.01); G01N 2291/022 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for quantifying an analyte in water, comprising:
exposing a piezoelectric material having at least one electrode disposed thereon to the water;
electrodepositing the analyte on the electrode by applying an electrical potential to the electrode while simultaneously measuring an electrical current through the electrode as a function of time and a frequency shift of vibration of the piezoelectric material as a function of time;
using the measured electrical current as a function of time to determine a charge on the electrode and the measured frequency shift as a function of time to determine a mass of the analyte deposited on the electrode; and
using the charge on the electrode and the mass of the analyte deposited on the electrode to determine a concentration of the analyte in the water.