L5: TOC,BOD,COD Flashcards
1
Q
Oxygen Demand
A
amount of reduced organic matter in water
2
Q
What are the four ways to measure oxygen demand?
A
TOC, BOD, COD, ThOD
3
Q
Total Organ Carbon (TOC)
A
amount of carbon bound in an organic compound
4
Q
Formula for TOC:
A
TOC=TC-TIC
5
Q
What are the two methods to measure TOC
A
Subtraction method - measure IC & TC to find TOC
Direct Method - sample, remove IC, purge out CO2, measure carbon to get TOC
6
Q
Theoretical Oxygen Demand (ThOD)
A
total amount of oxygen required to oxidize known compound to CO2 and H2O
7
Q
BOD formula
A
BOD=DOi-DOf
