With the  rapid development of the economy, the  market demand for mid to  high end  packaged drinking water,  especially for drinking natural water and drinking natural mineral water, has become increasingly prominent. Ozone  disinfection is widely used in mineral water production enterprises due to its significantly lower harm of by-products  compared to other gas containing disinfectants and low cost. Bromide is a substance that exists in natural water and is  easily oxidized to bromate under the action of ozone. They have been recognized by the International Agency for  Research on Cancer as potential carcinogens at level 2B.  Therefore, it is particularly important to establish an efficient, convenient, and rapid method for detecting the content of bromate in mineral water.