Type of material | Extractant | Organic matter extracted % | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Humic substances | Mild extractans: | |
Alkali extraction
Mild extractans
Na4P2O7 and other neutral salts
Formic acid - HCOOH
Organic chelating agents
Outline of extraction procedures in IHSS method
Step 18. Combine the final eluates from steps 15 and 17 and pass this solution through XAD-8