Tuesday, November 6, 2007
187-7

Characteristics of Humic Substances from Three Louisiana Coastal Wetland Soils.

Syam Dodla, School of Plant Environmental and Soil Sciences, Louisiana State University, Tower Drive, 104 Madison B Sturgis Hall, Baton Rouge, LA 70803, Jim Wang, Louisiana State University - Agronomy & Environmental Management, Louisiana State University, 104 Madison B Sturgis Hall, Baton Rouge, LA 70803, Ronald DeLaune, South Stadium Drive, Louisiana State University - Agronomy & Environmental Management, Louisiana State University, School of the Cost & Environment, Baton Rouge, LA 70803-7511, and Robert Cook, Chemistry, Louisiana State University, Louisiana State Univ., 636 Choppin Hall, Baton Rouge, LA 70803.

Use of wetlands is becoming a common practice for treating wastewater. These soils contain high amounts organic matter and are effective in removing different contaminants.  Humic compounds are the most recalcitrant fraction of organic matter and play major role in regulating transport and retention of contaminants especially hydrophobic organic contaminants. Understanding of their chemical structure largely helps in understanding of their reaction with different contaminants. In the present study three wetland soils of Louisiana coast were collected and soil organic matter was fractionated. Purified humic fractions were characterized by using different spectroscopy techniques. The results will be presented.

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Back to The ASA-CSSA-SSSA International Annual Meetings (November 4-8, 2007)