Radon detector RM-2
Equipment for in-situ permeability
More information you can find at http://www.radon.eu
Sampling system - soil gas sampling, transport, accessories|
The soil gas sample collection method consists of a small - diameter hollow steel probe with a free sharp tip pounded into the depth of 0.8 m below the surface, soil-gas samples are collected by using a syringe and introduced into evacuated scintillations cells.
The simplicity of this system is very practical for easy and quick soil gas sampling (similar sampling technique was described by Reimer, G. M. - Reconnaissance Technique for Determining Soil Gas Radon Concentrations, Geophys. Res. Letters 17, 1990, p. 809).
The active area is created in the head of the probe (driven into the soil to a measured depth) by the extrusion of the "lost"sharp tip by means of the punch wire inside the probe.
sampling system for 1000 soil gas samples contains:
Soil gas sampling :
At first the sharpened tip is inserted into the lower end of the sampling probe (12 mm diameter). The probe is pounded to the desired depth using a hammer and a drive in head (not to break the upper end of the probe). Then the sharp tip is moved a few centimetres lower (using the hammer after inserting of the punch wire into the probe), which makes the cavity at the lower end of the probe. Finally the upper end of the probe is connected with the syringe (using a small part of the rubber tube, a rubber stopper and a needle), and the soil gas sample can be collected. Then the sample is introduced into a previously evacuated Lucas cell.
Accessories for transport and easy sampling :
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