Electrochemical cell stirring

Patent metadata

Field	Value
Publication number	US-2024069002-A1
Application number	US-202217894803-A
Country	US
Kind code	A1
Filing date	Aug 24, 2022
Priority date	Aug 24, 2022
Publication date	Feb 29, 2024
Grant date	—

Abstract

An embodiment provides a method for stirring a sample in a cell, including: providing a cell comprising a sample chamber; placing a boron-doped diamond electrode on an inner surface of the sample chamber, placing a removable stir bar in the sample chamber, the removable stir bar directly contacting and touching the boron-doped diamond electrode; and wherein the stir bar can be operated to rotate within the sample chamber upon the boron-doped diamond electrode. Other aspects are described and claimed.

First claim

What is claimed is:

1 . A method for stirring a sample in a cell, comprising:
providing a cell comprising a sample chamber; placing a boron-doped diamond electrode on an inner surface of the sample chamber, placing a removable stir bar in the sample chamber, the removable stir bar directly contacting and touching the boron-doped diamond electrode; and wherein the stir bar can be operated to rotate within the sample chamber upon the boron-doped diamond electrode.

2 . The method of claim 1 , wherein the cell performs a coulometric measurement.

3 . The method of claim 1 , wherein the stir bar further comprises a magnet.

4 . The method of claim 3 , further comprising a stir plate under the boron-doped diamond electrode rotating a second magnet under the removeable stir bar to rotate the magnet of the stir bar.

5 . The method of claim 1 , wherein the removable stir bar mechanically wipes a surface of the boron-doped diamond electrode.

6 . The method of claim 1 , wherein the removable stir bar removes a fouling upon a surface of the boron-doped diamond electrode.

7 . The method of claim 1 , wherein the removable stir bar degases the sample.

8 . The method of claim 1 , further comprising a base plate located between the boron-doped diamond electrode and a stir plate.

9 . The method of claim 8 , further comprising a first gasket between the boron-doped diamond electrode and a spacer and a second gasket between the spacer and a top plate.

10 . The method of claim 1 , wherein the sample is a water sample for titration.

11 . A device for stirring a sample in a cell, comprising:
a cell comprising a sample chamber; a boron-doped diamond electrode located on an inner surface of the sample chamber; a removable stir bar, placed in the sample chamber, directly contacting with and touching the boron-doped diamond electrode; and wherein the stir bar can be operated to rotate within the sample chamber upon the boron-doped diamond electrode.

12 . The device of claim 11 , wherein the cell performs a coulometric measurement.

13 . The device of claim 11 , wherein the stir bar further comprises a magnet.

14 . The device of claim 13 , further comprising a stir plate under the boron-doped diamond electrode rotating a second magnet under the removeable stir bar to rotate the magnet of the stir bar.

15 . The device of claim 11 , wherein the removable stir bar mechanically wipes a surface of the boron-doped diamond electrode.

16 . The device of claim 11 , wherein the removable stir bar removes a fouling upon a surface of the boron-doped diamond electrode.

17 . The device of claim 11 , wherein the removable stir bar degases the sample.

18 . The device of claim 11 , further comprising a base plate located between the boron-doped diamond electrode and a stir plate.

19 . The device of claim 18 , further comprising a first gasket between the boron-doped diamond electrode and a spacer and a second gasket between the spacer and a top plate.

20 . A device for stirring a sample in a cell, comprising:
a cell comprising a sample chamber, wherein the cell performs a coulometric measurement; a boron-doped diamond electrode located on an inner surface of the sample chamber; a removable stir bar, placed in the sample chamber, directly contacting the boron-doped diamond electrode, wherein the removable stir bar further comprises a magnet; a stir plate under the boron-doped electrode rotating a second magnet under the removeable stir bar to rotate the magnet of the stir bar; and wherein the stir bar can be operated to rotate within the sample chamber upon the boron-doped diamond electrode.

Assignees

• Hach Co

Inventors

• Salzer Corey Alan
• Kroll Dan Jonathan

Classifications

• G01N31/164

  by electrical or electrochemical means · CPC title

• G01N27/44

  using electrolysis to generate a reagent, e.g. for titration · CPC title

• G01N33/1853 Primary

  Hardness of water · CPC title

• G01N27/423 Primary

  Coulometry · CPC title

• G01N1/38

  Diluting, dispersing or mixing samples · CPC title