Geoscience Reference
In-Depth Information
Fig. 16.42 Atrazine degradation in sterilized aquifer material (a1, b1, c1) and in natural
(unamended) aquifer material (a2, b2, c2) for reactors under stagnant (15 C), stagnant (25 C),
and recirculating (15 C) conditions. Data points are the mean of three replications. The least
significant difference between these treatments at the p \ 0.05 level is 0.075. Figures are
identified as a Topeka, b Ashland, and c Hutchinson aquifers (Schwab et al.
2006
)
chemically induced degradation. Comparing atrazine degradation behavior in
aquifers with those in the near surface, Schwab et al. (
2006
) show that atrazine
degrades faster in soil than in aquifer material; they attribute this behavior to a
higher biological population and a higher carbon content in the soil.
