CAJ | 학술논문

以H2O2和KI作为分子碘(I2)的来源，研究超声/H2O2/KI体系对磺胺嘧啶(SD)的降解效果.考察超声/H2O2/KI体系中溶液初始pH值、H2O2和 KI 添加浓度等因素的影响.采用碘自由基抑制剂甲硫咪唑对体系中的活性物质进行分析.结果表明，超声/H2O2/KI 体系显著提高了磺胺嘧啶的降解效果，磺胺嘧啶的去除率随溶液初始pH值(2.6~5.2)的升高而降低； H2O2和KI的添加浓度对磺胺嘧啶的去除率影响较大，磺胺嘧啶的去除率随其初始浓度的增大而降低.碘自由基(I·和I2-·)是超声/H2O2/KI体系降解磺胺嘧啶的主要活性物质.HPLC图谱表明，磺胺嘧啶降解的同时生成4种产物，磺胺为降解产物之一.
이H2O2화KI작위분자전(I2)적래원，연구초성/H2O2/KI체계대광알밀정(SD)적강해효과.고찰초성/H2O2/KI체계중용액초시pH치、H2O2화 KI 첨가농도등인소적영향.채용전자유기억제제갑류미서대체계중적활성물질진행분석.결과표명，초성/H2O2/KI 체계현저제고료광알밀정적강해효과，광알밀정적거제솔수용액초시pH치(2.6~5.2)적승고이강저； H2O2화KI적첨가농도대광알밀정적거제솔영향교대，광알밀정적거제솔수기초시농도적증대이강저.전자유기(I·화I2-·)시초성/H2O2/KI체계강해광알밀정적주요활성물질.HPLC도보표명，광알밀정강해적동시생성4충산물，광알위강해산물지일.
The ultra-degradation of sulfadiazine (Sulfadiazine, SD) enhanced by molecular iodine under ultrasound/ H2O2/KI system was investigated. The experimental parameters such as initial solution pH, KI and H2O2 adding concentration were discussed. The main active species in ultrasound/H2O2/KI system were evaluated by adding methimazole, the scavenger of iodine radicals. The experimental results indicated that SD degradation was enhanced significantly under the ultrasound/H2O2/KI system. The SD removal efficiency decreased with the initial pH value, and was influenced considerably by the concentration of H2O2 and KI. The radical inhibition experiments indicated that I· and I2-· were the main active species contributed to SD degradation. HPLC analysis showed that four intermediate products formed during SD degradation under ultrasound/H2O2/KI system, and one was sulfanilamide.