| Autor: |
Banowetz, Gary M.1 banowetg@onid.orst.edu, Whittaker, Gerald W.1, Dierksen, Karen P.1, Azevedo, Mark D.1, Kennedy, Ann C.2, Griffith, Stephen M.1, Steiner, Jeffrey J.1 |
| Předmět: |
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| Zdroj: |
Journal of Environmental Quality. Jan/Feb2006, Vol. 35 Issue 1, p133-140. 8p. |
| Abstrakt: |
The article focuses on a fatty acid methyl ester analysis (FAME) to identify sources of soil in surface water. Fatty acid methyl ester profiles were developed from soils collected from contrasting land uses in different seasons. The purpose was to assess whether any specific fatty acids can consistently serve as variables in multivariate statistical analyses to permit reliable classification of soils. Soil was obtained from the surface of the confluence of drainage. A couple of experiments were conducted to determine the stability of soil FAMEs in the aquatic environment. A bayesian method was chosen to select appropriate fatty acids and it was found that variable selection was strongly impacted by the season during which soil was collected. Fatty acid methyl ester analysis is very effective for identifying the primary source of soil in surface waters. Successful multivariate analysis of the FAME datasets relies on identification of appropriate fatty acids for use as variables. The variables need to be identified in each new set of reference soils. |
| Databáze: |
GreenFILE |
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