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.

在磷酸介质中，硫氰酸根对溴酸钾氧化茜素有较强催化作用，据此建立了催化光度法测定痕量硫氰酸根新方法。