Nice work, Carl.
Bromine is also used as a flame retardant in plastics and epoxies. I've run XRF analysis (X-Ray Fluorescence) on various items in my lab, and just about every electrical / electronic device I have analyzed that is made from plastic or is plastic or epoxy coated strongly emits bromine's Ka (11.92 keV) and Kb (13.29 keV) x-rays. Motorcycle ignition coils, capacitors, CFL lamp bases, etc, etc.
I tried neutron activation on a couple of these items, but evidently the amount of Br was too small, as I could not measure any gammas.
Jon Rosenstiel |