Can you get redox potential from dissolved oxygen in water?

Click For Summary
SUMMARY

The discussion centers on converting dissolved oxygen (dO2) values into redox potential (Eh) for water samples, specifically using the Nernst equation. The user, Ella, has dO2 measurements ranging from 80-100% and seeks to derive Eh for the purpose of creating phase diagrams for metal speciation in a river. Additionally, there is an inquiry about converting dO2 into oxygen fugacity, indicating a need for understanding the relationship between these parameters in aquatic chemistry.

PREREQUISITES
  • Understanding of the Nernst equation
  • Knowledge of redox potential (Eh) and its significance in aquatic chemistry
  • Familiarity with dissolved oxygen (dO2) measurements and their implications
  • Basic concepts of phase diagrams and metal speciation
NEXT STEPS
  • Research the application of the Nernst equation in calculating redox potential from dissolved oxygen
  • Explore methods for converting dissolved oxygen values into oxygen fugacity
  • Study the principles of phase diagrams in relation to metal speciation in aquatic environments
  • Investigate the impact of redox conditions on the behavior of dissolved metals in water
USEFUL FOR

Environmental scientists, aquatic chemists, and researchers involved in water quality assessment and metal speciation studies will benefit from this discussion.

ella_brodie
Messages
1
Reaction score
0
Hi there,

I am trying to get the Eh (or pe) of water samples which I took last summer. I didn't measure it directly at the time. I do have dissolved oxygen values from each site. Is there a way to convert dO2 into Eh? All the dO2 values were in the 80-100% range.

Alternatively, is there a way to convert dO2 into oxygen fugacity?

I am hoping to make phase diagrams for the speciation of dissolved metals in a river.

Thanks!

Ella
 
Chemistry news on Phys.org
Sounds like you should use Nernst equation.
 

Similar threads

How Can You Remove Dissolved Oxygen from Water Without Chemicals?
  • · Replies 11 ·
Replies
11
Views
7K
Dissolved oxygen related to redox potential
  • · Replies 3 ·
Replies
3
Views
10K
Cleaning a small batch of HDPE flakes obtained from motor oil containers
  • · Replies 2 ·
Replies
2
Views
3K
Chemically regenerating my auto's catalytic converter?
  • · Replies 19 ·
Replies
19
Views
8K
How Can Hydrogen Be Separated from Water Safely and Efficiently?
  • · Replies 10 ·
Replies
10
Views
5K
Motion with elastic potential energy and other forces
  • · Replies 5 ·
Replies
5
Views
2K
How can I increase the water pressure in a low head hydroelectric system?
  • · Replies 2 ·
Replies
2
Views
2K
How Can You Calculate the Energy Content of Waste Steam in Industrial Processes?
  • · Replies 2 ·
Replies
2
Views
3K
Too Much Stellar Flux: Fixing a 25-year old Problem
  • · Replies 9 ·
Replies
9
Views
4K
Does Water at the Top of a Dam Have Kinetic Energy?
  • · Replies 24 ·
Replies
24
Views
5K