westwoodft

Correct me if I'm wrong, but doesn't hypochlorite and bromide react to make hypobromite? Maybe chlorine would work. I'll need to do some more research.

Hi all! Thanks for the help! I have a sample containing bromine, bromide, and chloride salts in solution with water. I am trying to measure the absorbance of bromide with a photometer for an industrial application. The bromine peak is at 235 nm and the bromide peak is at 214 nm. I thought about automating the phenol red colorimetric method with a reagent system, but chloramine-T is pretty sensitive and would create a lot of waste. I can measure bromine easily, but bromine overlaps with my bromide peak making it difficult to measure bromide. I was thinking if I measure the concentration of bromine first, and then react bromide in such a way to make bromine, I can then measure bromine again and take the difference to get my resulting bromide concentration. I've read that I can maybe use Potassium Bromate, but I'm not sure of the implications this will have on bromine and chloride salts in my sample. Any ideas on what I can use to make this work or is this idea just too crazy to attempt? Any ideas are welcome!