Modular 3D-Printed Soil Gas Probes
Abstract
ABSTRACT: Extraction of soil gas is required for a variety of applications in earth sciences and environmental engineering. However, commercially available probes can be costly and are typically limited to a single depth. Here, we present the open-source design and lab testing of a soil gas probe with modular capabilities that allow for the vertical stacking of gas extraction points at different depths in the soil column. The probe modules consist of a 3D printed spacer unit and hydrophobic gas permeable membrane made of high density Polyethylene with pore sizes 20-40 microns. Each of the modular spacer units contain both a gas extraction line and gas input line for the dilution of soil gases if needed. These 2-inch diameter probes can be installed in the field quickly with a hand auger and returned to at any frequency to extract soil gas from desired soil depths. The probes are tested through extraction of soil pore water vapors with distinct stable isotope ratios.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2016
- Bibcode:
- 2016AGUFM.H33E1590G
- Keywords:
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- 0485 Science policy;
- BIOGEOSCIENCESDE: 1834 Human impacts;
- HYDROLOGYDE: 1880 Water management;
- HYDROLOGYDE: 1895 Instruments and techniques: monitoring;
- HYDROLOGY