选取了4种腐植酸样品,在若干发应条件下测定了腐植物质的还原容量。结果表明,还原容量随pH值升高而增加。样品中苯酚性羟基含量与还原容量一致。 Four kinds of humic acid samples were selected to determine the reducing capacity of humic substances under several hair conditions. The results showed that the reduction capacity increased with the increase of pH. Phenolic hydroxyl content in the sample is consistent with the reduction capacity.