Yes, I would be able to tell using chemical tests.
That is pretty awesome. If you ever get bored after you see a heavy day of spraying in the air. Once it all lands on the ground I think it would be a good experiment to see what you find with the chemical tests. I know some have done it not looking for nanoparticles but they found heavy aluminums, barium and few other toxic substances. Kind of makes you wonder what the 5G will do with all the aluminum in our brains.