Mapping Gases Over a City: Theoretical Experiment

[iwant2beoz]

I am looking for a way to map gases over a city, what are some ways I could do that? This is a theoretical experiment so cost is not an issue. Thanks in advance

 

[russ_watters]

Use a gas detector and a GPS.

 

[iwant2beoz]

What sort ppm can I get something like that? And also how does said gas detector work?

 

[Port Phillip]

I am not sure bt i think you can use gas detector with ppm reading you can also using remote sensing and gps system.

 

[Quantum Defect]

I am looking for a way to map gases over a city, what are some ways I could do that? This is a theoretical experiment so cost is not an issue. Thanks in advance

People do this already. A mass spectrometer with an air sampler (essentially a small leak of air into the spectrometer) combined with GPS. Some optical measurements will work with gases with strong absorbances, but mass spec. is probably the most universal.