In order to measure soil gas radon, the instrument was operated in sniff mode (RAD-7 2009).
We measured soil respiration rates and gas diffusivities along a transect on an arable field in Hollabrunn (Lower Austria) within the 2014 vegetation period.
The first experiment, conducted under sterilized conditions, was used to measure the soil gas diffusion coefficient, and subsequent experiments in which biodegradation occurred were used to estimate the degradation rate coefficient by fitting the outflow to a mathematical model.
The comparative analysis was made on for two populations of gaseous hydrocarbon (methane, ethane, propane, i-butane, n-butane, propylene, 1-butene) concentrations measured in soil gas samples collected from the water-saturated ("wet" sampling interval) and water-free ("dry" sampling interval) environments.
We used an experimental approach to measure soil-borne enemy impact by plant soil feedback approach.
Prior to contamination on the third day, the lysimeter sampling and injection ports and groundwater outlet were closed and the background concentrations of gasoline compounds in the soil gas were measured.
Concentrations of He, H2, CO2, CH4, O2, N2, Rn, and Hg in soil gas were measured in the field at eight short profiles across the seismic rupture zone in June and December 2008 and July 2009.
The concentrations of He, H2, N2, O2, CO2 and CH4 in soil gas were measured in the field by an Agilent 3000 Micro GC with an error of ± 5%.
In order to exploit 222Rn as a naturally-occurring tracer in soils we need to sample and measure radon isotopes in soil gas with high spatial and temporal resolution, without disturbing in situ activity concentrations and fluxes.
Soil gas radon was measured by coupling a RAD-7 radon monitor (Durridge Co). to a standard soil probe.
