Based on the catalytic effect of thiocyanate on the oxidation of alizarine red by potassium bromate,a new catalytic spectrophotometric method for the determination of trace thiocyanate was developed.

在磷介质中，硫氰根对溴茜素红褪反应具有较强作用，据此建立了光度法测定痕量硫氰根新方法。