What are the four categories (categories are listed below) of air samples? Define each one in your own words, and provide an example of how each one might be applied in a real-world scenario.
Your response should be at least 200 words in length. Using APA format for references.
A source emission - Samples collected at an emission source before it is released to the environment. (Stack Test)
An area sample - Samples collected adjacent or in proximity to an identified source.
A population exposure sample - Randomized samples collected within a community or air basin to represent an identified population
A personal sample - Samples collected within the breathing zone of a human subject