Comparative study of humic acids from soils and from leaves

Maliea Holden, Christopher Spiller, Gabriela Chilom, Physical Sciences, Dixie State University, 225 S 700 E, St. George, UT 84770

Humic acids are a key component of the terrestrial ecosystem as they are responsible for many physical and chemical properties of soils like buffering capacity, metal-binding capacity, transport and fate of contaminants, stability of aggregates of soil particles and water-holding capacity. The role of humic acid depends on its nature and origin as well as its chemical properties.  
The current project is looking into the properties and ability of humic acids extracted from leaves, to improve quality of the soil. Humic acid was isolated by traditional alkali extraction from leaves of two commonly grown trees in Southern Utah: Prunus x Cistena, Pyrus Calleryana Bradford. Chemical properties of humic acid samples were analyzed by FT-IR and 13C solid state NMR; their ability to enrich soils in carbon was tested by adsorption isotherms on kaolinite. The behavior of humic acid from leaves is discussed and compared to the humic acid extracted from leonardite and mineral soils.

Additional Abstract Information

Presenters: Maliea Holden, Christopher Spiller

Institution: Dixie State University

Type: Poster

Subject: Chemistry

Status: Approved

Time and Location

Session: Poster 4
Date/Time: Tue 11:00am-12:00pm
Session Number: 3609