Health Effects Radon is a major source of indoor air pollution and is the cause of tens of thousands of deaths annually in the United States and Europe. Radon decays to form daughters, or decay products, which include radioactive polonium, lead, and bismuth.Click to see full answer. Likewise, is radon a pollutant?Radon is a colorless, odorless gas, the primary source of indoor air pollution. Radon sinks in air because it has a high density; it is therefore often found in the basements of homes, particularly in areas where with a lot of shale and boulders in the soil.Secondly, is lead a primary pollutant? Primary air pollutants (PAPs) are those that are emitted directly into the air from sources. Examples – Sulphur dioxide, nitrogen oxides, carbon monoxide, volatile organic matter, particulate matters, lead, ammonia etc. Keeping this in view, what is the primary pollutant? Definition: A primary pollutant is an air pollutant emitted directly from a source. A secondary pollutant is not directly emitted as such, but forms when other pollutants (primary pollutants) react in the atmosphere.What are the 5 primary pollutants? Types of primary pollutants include: Nitrogen oxides (NOx) Carbon monoxide (CO) Volatile organic compounds (VOCs) Sulfur oxides (SOx) Particulate matter (PM) Mercury. and more.