| 纳米TiO2 光催化降解毒死蜱的影响因素研究 |
| |
| 引用本文： | 刘祥英,周小毛,蔡海林,曾爱平,柏连阳. 纳米TiO2 光催化降解毒死蜱的影响因素研究[J]. 农药学学报, 2011, 13(4): 435-438. DOI: 10.3969/j.issn.1008-7303.2011.04.19 |
| |
| 作者姓名： | 刘祥英 周小毛 蔡海林 曾爱平 柏连阳 |
| |
| 作者单位： | 1.湖南农业大学 生物安全科学技术学院,长沙 410128 |
| |
| 基金项目： | 国家自然科学基金资助项目(21003042);湖南省重点科技资助项目(K0901015-21). |
| |
| 摘 要： | 以高压汞灯为光源,采用高效液相色谱法研究了纳米TiO2光催化降解毒死蜱的影响因素。结果表明:纳米TiO2的最佳质量浓度为50～100 mg/L;毒死蜱初始质量浓度影响其降解效果,相对较低的质量浓度(5～20 mg/L)下初始浓度与降解率成正相关,相对较高质量浓度(20～80 mg/L)下初始浓度与降解率成负相关;初始质量浓度为10 mg/L时,毒死蜱的降解符合一级反应动力学方程;不同初始pH值的反应溶液经光催化反应后均表现为酸性,碱性条件有利于降解反应的进行。
|
| 关 键 词： | 二氧化钛 光催化 降解 毒死蜱 |
| 收稿时间： | 2010-12-31 |
| 修稿时间： | 2011-03-07 |
Study on influence factors of chlorpyrifos degradation using TiO2 |
| |
| LIU Xiang-ying,ZHOU Xiao-mao,CAI Hai-lin,ZENG Ai-ping and BAI Lian-yang. Study on influence factors of chlorpyrifos degradation using TiO2[J]. Chinese Journal of Pesticide Science, 2011, 13(4): 435-438. DOI: 10.3969/j.issn.1008-7303.2011.04.19 |
| |
| Authors: | LIU Xiang-ying ZHOU Xiao-mao CAI Hai-lin ZENG Ai-ping BAI Lian-yang |
| |
| Affiliation: | 1.College of Biosafety Science and Technology, Hunan Agricultural University, Changsha 410128, China2.Hunan Institute of Humanities, Science and Technology, Loudi 417000, Hunan Province, China |
| |
| Abstract: | The influence factors of chlorpyrifos degradation using TiO2 through high-pressure mercury lamp were investigated.Concentrations of chlorpyrifos were determined with HPLC.The results showed that the concentration 50-100 mg/L TiO2 was the optimum.Significant positive correlation was found between lower concentrations 5-20 mg/L of chlorpyrifos and degradation rate,while negative correlation with higher concentrations of 20-80 mg/L.The degradation kinetics of 10 mg/L chlorpyrifos followed the first order reaction.Different pH decreased below pH 7 after photocatlytic reaction,and alkaline conditions chlorpyrifos was favorable to the degradation. |
| |
| Keywords: | TiO2 photocatlytic reaction degradation chlorpyrifos |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《农药学学报》浏览原始摘要信息 |
|
点击此处可从《农药学学报》下载免费的PDF全文 |
|
