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，硫氰溴钾氧化茜素红的褪反应具有较强的催化作，建立了催化光度法测定痕量硫氰的新方法。