By using a reversed flow-injection configuration for precipitation as barium sulphate, this anion was determined in the range 10–150 μg/ml, with a relative standard deviation of 2.6%. The sensitivity was increased by a factor of seven by using a nitrous oxide-acetylene flame to measure ...
With coating thickness of 0.8 mm ,the radon mitigation efficiency in 1# radon module concentration is optimal when the addition of defoaming agent is 0.3% (mass fraction) . The radon mitigation efficiency increases with the coating thickness when the defoaming agent of 0.3% is added ,but the...