Premium
Soil Equilibration with Minimal Solution Loss
Author(s) -
Hooper Ginger K.,
Kittrick J.A.
Publication year - 1986
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1986.03615995005000010051x
Subject(s) - water content , calcite , moisture , soil water , environmental science , soil science , mineralogy , chemistry , analytical chemistry (journal) , environmental chemistry , materials science , geology , composite material , geotechnical engineering
Both gas exchange and moisture loss are important experimental variables influencing the attainment of equilibria in CO 2 ‐dependent systems. The Kimble permeable membrane (PM) cap and perforated parafilm were tested for both CO 2 flow across the membrane and moisture holding ability. Samples of calcite and calcite + soil were equilibrated in an open atmosphere (of known CO 2 content). No significant difference in pH − 1/2pCa 2+ − 1/2pCO 2 was found between the PM cap and the parafilm, perforated to allow gas exchange. However, the moisture loss for perforated parafilm was 10 times greater than with the PM cap.