1. Development of soil water repellency in the course of isothermal drying and upon pH changes in two urban soils.
- Author
-
Bayer, Julia V. and Schaumann, Gabriele E.
- Subjects
SURFACE chemistry ,WETTING ,HYDROPHOBIC surfaces ,HYDROGEN-ion concentration ,DRYING ,CARBON in soils ,EVAPORATION (Chemistry) ,SURFACE tension ,CHEMICAL sample preparation - Abstract
This article discusses water repellent to wettable soil conditions in two urban fields in Berlin, Germany. The influence of artificial pH-changes on their wetting behavior and sample wettability changes during drying for different drying temperatures were also investigated. According to the authors, while rising pH generally improves the wettability and decreasing pH intensifies water repellency there appears to be a maximum in water repellency at a pH above the initial pH. The results from drying samples at different temperatures showed the dependence of water repellency development on the drying temperature. They conclude that some pH active functional groups and the amount of soil organic matter may influence sample wettability.
- Published
- 2007
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