[en] Studies have been completed that have demonstrated that there are two mechanisms for the neutralization of ²¹⁸Po⁺ ions formed by the decay of ²²²Rn. In the presence of oxygen, an oxide species is formed. It has been determined as part of the present work that this oxide species has an ionization potential in the range of 10.35 to 10.53 eV and that it can be neutralized by extracting electrons from lower ionization potential trace gases. It has also been found that a second mechanism is responsible for neutralization in the absence of oxygen. The behavior of NO₂ in the range of 50 ppB to 1 ppM in N₂ was explored. For NO₂ concentrations above 700 ppB, complete neutralization was observed. For lower concentrations, a concentration dependent degree of neutralization was observed. Studies are now being initiated to examine the kinetics of these neutralization processes. 27 references, 3 figures, 4 tables