Long-term changes in water and soil chemistry in spruce and beech forests, Solling, Germany
Article Abstract:
Long-term changes in bulk precipitation chemistry, soil and throughfall water and exchangeable base cations in the spruce and beech forests of Solling, Germany, were examined to identify the dynamics of the base cation chemistry of the soils. Results revealed that the forests' soils underwent acidification during the early 1970s as a result of SO4 deposition. SO4 levels, however, dropped after 1976 as industries cut emissions. Despite this, acidification persisted in the spruce forests' soil due to reduced deposition of calcium and magnesium. Beech soil, however, recovered.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
Convective transport of gases in moist porous media: effect of absorption, adsorption, and diffusion in soil aggregates
Article Abstract:
The comparison of four wetted solid matrix models to describe the convection, dispersion and mass transfer of gaseous chemical species and liquid-solid interface adsoption of the dissolved species are discussed. Mean retention time and concentration band variance were computed from the four models. These chromatographic processes were then applied to understand convective transport in partially saturated soils. It was found that the retardation of volatile chemical migration can be substantial even with very small soil-water content
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Membrane-based integrated absorption-oxidation reactor for destroying VOCs in air
Article Abstract:
A compact membrane-based integrated absorber-oxidation reactor was developed for the degradation of trichloroethylene (TCE) and other volatile organic compounds. The integrated absorber-oxidation reactor is composed of an ozonator, metering pump and a mountable electric power supply. The reactor is also composed of two sets of silicone capillaries and one set of Teflon microtubules. Furthermore, the membrane reactor degraded toluene by 97% under low VOC concentrations.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Long-term technological trends and their implications for management. Incentive systems for technical change: the Chinese system in transition
- Abstracts: Long-term synaptic changes produced by a cellular analog of classical conditioning in Aplysia. More than just frequency detectors?
- Abstracts: Structural innovation and management strategy in the iron and steel industries of Japan and Germany. Current challenges facing the Japanese steel industry
- Abstracts: Use of audio signals for chatter detection and control. A model of the sequential bending process for manufacturing simulation
- Abstracts: Comment on 'Destruction of organohalides in water using metal particles: carbon tetrachloride/water reactions with magnesium, tin and zinc'