CAJ | 학술논문

采用C类紫外线或称为短波紫外线（即UV C）辐照降解水中磺胺类药物，考察了磺胺类药物种类、UV光强、磺胺类药物初始浓度、反应液pH对降解效果的影响。结果表明UV C辐照对磺胺嘧啶、磺胺甲基嘧啶和磺胺甲恶唑的降解过程均符合拟一级反应动力学。UV C辐照技术对磺胺甲恶唑的去除率最高，在反应液pH为7，光强为142μW/cm2，初始浓度为0．02 mmol/L条件下，辐照30 min后磺胺甲恶唑去除率达到67．80％，而磺胺嘧啶和磺胺甲基嘧啶去除率仅15％左右。通过增大紫外光强和减小初始浓度，可提高反应速率和磺胺甲恶唑去除率。反应液pH对反应效果的影响显著，酸性条件更利于UV C辐照降解磺胺甲恶唑。
채용C류자외선혹칭위단파자외선（즉UV C）복조강해수중광알류약물，고찰료광알류약물충류、UV광강、광알류약물초시농도、반응액pH대강해효과적영향。결과표명UV C복조대광알밀정、광알갑기밀정화광알갑악서적강해과정균부합의일급반응동역학。UV C복조기술대광알갑악서적거제솔최고，재반응액pH위7，광강위142μW/cm2，초시농도위0．02 mmol/L조건하，복조30 min후광알갑악서거제솔체도67．80％，이광알밀정화광알갑기밀정거제솔부15％좌우。통과증대자외광강화감소초시농도，가제고반응속솔화광알갑악서거제솔。반응액pH대반응효과적영향현저，산성조건경리우UV C복조강해광알갑악서。
The degradation of sulfonamides by UV C irradiation in aqueous solutions was investigated and the effects of type of sulfonamides,irradiation intensity,initial concentration and pH value on the removal of sulfonamides were evaluated. The results indicate that the UV C degradation of sulfadiazine,sulfamerazine and sulfamethoxazole well follow pseudo first order kinetic. At pH of 7 and under the conditions of 142 μW/cm2 irradiation intensity and 0. 02 mmol/L initial concentration,67. 80% sulfamethoxazole and only about 15% sulfadiazine and sulfamerazine are removed by UV C irradiation after 30 min. The photodecomposition rate and removal of sulfamethoxazole can be enhanced by increasing UV C irradiation intensity and decreasing initial concentration. Sulfamethoxazole UV C degradation rate is greatly influenced by pH of the solution and in acid condition,degradation rate was higher.