From the CV graph of the DR 3B, we can infer that the reduction of anthraquinone happened in the negative branch, and the reversible reaction assumed to be the redox reation of amino and hydroxyl.

• 由分散红3B的伏安图可推断出在负电位区发生的是蒽醌基的还原，在正电位区存在氨基和羟基的氧化还原反应。