摘要： 以Fe²⁺作为活化剂，活化H₂O₂和过硫酸盐（PS）降解水中的4-乙酰氨基酚（AC），考察了影响降解效果的主要因素。结果表明，AC降解率随着Fe²⁺浓度的增加而提高，随着pH的增加而降低。采用Fenton/PS体系在弱酸性和中性条件下降解AC，AC降解率可分别达到88%和61%；在pH=8时仍有32%的AC降解率，扩大了pH的适用区域。甲醇和叔丁醇淬灭实验验证了在Fenton/PS体系中降解AC，HO·是主要的反应自由基。

关键词: 4-乙酰氨基酚, Fenton, 过硫酸盐

Abstract: Using Fe²⁺ as activator,activated H₂O₂ and persulfate(PS) have been utilized for the degradation of acetaminophen(AC) in water. The main factors that have influence on the degradation effect have been investigated. The results show that the degradation rate of AC increases with the increase of Fe²⁺ concentration,and decreases with the increase of pH. AC degradation can be accomplished when Fenton/PS system is under weak acidic and neutral conditions. AC degradation rate can reach 88% and 61%,respectively. When pH=8,AC degradation rate still can reach 32%. It means the applicable range of pH has been extended. It is tested and verified by means of methanol and tertiary butanol quenching experiments that HO· is the main reaction free radical in the degradation of AC in Fenton/PS system.

Key words: acetaminophen, Fenton, persulfate

中图分类号: 

• X703.1