The emissions will include aerosol, NOx, NH3, SO2, DMS/OCS, NMVOCs, CO, CH4, N2O, CO2, certain halogen species and Radon-222
2002, An experimental method for measuring the radon-222
emanation factor in rocks.
Radiation doses in children of the Tomsk region during inhalation of radon-222
Content of Natural Gas Samples from Upper and Middle Devonian Sandstone and Shale Reservoirs in Pennsylvania: Preliminary Data.
in the ground water of Chester County, Pennsylvania.
in groundwater in the German Rhine-Nahe area.
Seasonal variation of radon-222
concentrations in specific locations in Jordan.
Crotts has compared the areas where TLPs have been most frequently sighted to regions where Apollo space missions observed evidence of a short-lived radioactive gas, radon-222
, escaping from the Moon's interior - a clear sign that some type of geological activity was going on.
During the 1980s and early 1990s, elevated concentrations of radium-226 and radon-222
in groundwater wells and tap water were reported in Harris County, Texas, particularly in the northwest.
One isotope, radon-222
, for example, decays very quickly into polonium-218 after it is released from a magma chamber--it has a half-life of 3.
Recent studies have employed radium isotopes (4) and radon-222
(5), both naturally enriched in groundwater relative to surface water due to a high uranium content in aquifer sediments, to quantify SGD in coastal systems.
Polonium-210 is formed by the radioactive decay of radon-222
, which is found in small amounts in volcanic magma.