Experimental study demonstrates accurate water content measurement across diverse porous media using gas-phase tracers, confirming the method's versatility for hydrologic and soil characterization.
Gas‐phase partitioning tracer tests were conducted to measure water content for several porous media with different mean particle diameters and particle‐size distributions. Methane was used as the nonreactive tracer and difluoromethane was used as the water‐partitioning tracer. Water contents determined from the tracer‐test results were similar to values measured gravimetrically. These results support the utility of the gas‐phase tracer method for measuring water content in a variety of porous media.
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Peng et al. (2005) studied this question.
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