The measurement of low concentrations of the short-lived radon-222 daughters in the air by alpha spectroscopy.
D000398:Air Pollution, Radioactive / Q000032:analysis*; D000512:Alpha Particles; D001729:Bismuth / Q000032:analysis*; D002623:Chemistry Techniques, Analytical / Q000379:methods; D007854:Lead / Q000032:analysis*; D011059:Polonium / Q000032:analysis*; D011868:Radioisotopes / Q000032:analysis*; D013057:Spectrum Analysis
D011868:Radioisotopes; D007854:Lead; D011059:Polonium; D001729:Bismuth