Carbon
dioxide is one of the most important greenhouse gases that contribute
to global warming. Radon exhalation rate is an important factor in
evaluating environmental radon levels. This paper proposes a method to
simultaneously measure the radon exhalation rate and CO2flux
on the same soil surface based on accumulation chamber technique.
Simultaneous measurements of radon exhalation rate (J) and CO2flux
(F) at the soil surface were made using a portable CO2gas
analyzer and a RAD7, and the results were obtained by fitting sequences
of experimentally measured radon and CO2concentrations
using mathematical models from existing studies. The experimental
results show that radon exhalation rate from the soil surface is
significantly and positively correlated with CO2flux
at the regional scale. The linear fitting results show that
J = 7.2 × F, R2 = 0.86.
This simultaneous measurements help to compare and correlate the data
and to reveal the potential connection between radon exhalation rate
and CO2flux.
