Electrochemical sensor for lead detection
US-11125717-B2 · Sep 21, 2021 · US
Electrochemical sensor for lead detection
US12241862B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12241862-B2 |
| Application number | US-202117480845-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 21, 2021 |
| Priority date | Jan 23, 2018 |
| Publication date | Mar 4, 2025 |
| Grant date | Mar 4, 2025 |
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Abstract
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A sensor for detecting lead in an aqueous solution includes a copper working electrode, a counter electrode, a power supply for applying underpotential deposition of lead onto the copper electrode, a measuring device for providing measurement of a hydrogen evolution reaction (HER) current on the Pb upd -modified electrode, and a controller configured to correlate the degree of suppression of the HER current to Pb upd coverage to determine the lead coverage and lead concentration of the solution.
First claim
Opening claim text (preview).
Having described the invention, we claim: 1. A sensor for detecting lead in an aqueous solution, the sensor comprising: a copper working electrode for placement in the aqueous solution, a counter electrode for placement in the aqueous solution, a power supply for applying underpotential deposition of lead (Pb upd ) onto the copper electrode, a measuring device for providing measurement of a hydrogen evolution reaction (HER) current on a Pb upd -modified electrode, and a controller configured to correlate the degree of suppression of the HER current to Pb upd coverage to determine the lead coverage and lead concentration of the solution. 2. The sensor of claim 1 , wherein the counter electrode comprises gold, platinum, palladium, silver, carbon, or alloys thereof. 3. The sensor of claim 1 , further comprising a reference electrode. 4. The sensor of claim 1 , wherein the copper working electrode has a needle-like dendritic surface profile. 5. The sensor of claim 4 , wherein the needle-like dendritic surface profile of the copper working electrode is defined by an under Zn dendrite potentiostatic plating.
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Classifications
Specific cations in water, e.g. heavy metals · CPC title
- G01N27/42Primary
Measuring deposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte · CPC title
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- What does patent US12241862B2 cover?
- A sensor for detecting lead in an aqueous solution includes a copper working electrode, a counter electrode, a power supply for applying underpotential deposition of lead onto the copper electrode, a measuring device for providing measurement of a hydrogen evolution reaction (HER) current on the Pb upd -modified electrode, and a controller configured to correlate the degree of suppression of th…
- Who is the assignee on this patent?
- Univ Case Western Reserve
- What technology area does this patent fall under?
- Primary CPC classification G01N27/42. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 04 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).