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.

在磷中，硫氰根对溴钾氧茜素红的褪反应具有较强的作用，据此建立了度法测定痕量硫氰根的新方法。