| 水体中邻苯二甲酸酯光降解研究 |
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| 引用本文： | 胡晓宇,张克荣,郑波,吴德生. 水体中邻苯二甲酸酯光降解研究[J]. 四川大学学报(医学版), 2003, 34(2): 300-302,305 |
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| 作者姓名： | 胡晓宇 张克荣 郑波 吴德生 |
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| 作者单位： | 四川大学华西公共卫生学院,卫生检测学教研室,成都,610041 |
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| 基金项目： | 国家自然科学基金重点项目 (批准号 3 0 0 3 0 12 0 )资助 |
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| 摘 要： | 目的 水解水环境中邻苯二甲酸酯(PAEs）的迁移转化和归宿。方法 以HPLC为分析手段，用UVTiO2-H2O2光催化氧化体系研究了5种PAEs的光降解。结果 PAEs光降解的适宜条件为pH6.0,Ti2O2 2.0g/L,H2O22.0%；影响PAEs光催化氧化反应因素的顺序为PAEs初始试浓度＞光照时间＞试液pH＞H2O2浓度＞TiO2浓度：PAEs的光降解过程符合一级动力学方程。结论 UV－TiO2-H2O2光催化氧化体系对于PAEs有较好的降解作用。
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| 关 键 词： | 邻苯二甲酸酯 光降解 动力学 |
Photodegradation of Phthalic Acid Esters in Water |
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| Hu Xiaoyu,Zhang Kerong,Zheng Bo,Wu Desheng. Photodegradation of Phthalic Acid Esters in Water[J]. Journal of Sichuan University. Medical science edition, 2003, 34(2): 300-302,305 |
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| Authors: | Hu Xiaoyu Zhang Kerong Zheng Bo Wu Desheng |
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| Affiliation: | Department of Sanitary Technology, West China School of Public Health, Sichuan University, Chengdu 610041, China. |
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| Abstract: | Objective To investigate the environmental degradation process of phthalic acid esters (PAEs). Methods The PAEs were detected by HPLC. We used the system of ultraviolet light, TiO 2 and hydrogen peroxide to promote the photodegradation of PAEs in water. Results The photodegradation of PAEs was consistent with the first level kinetics. The maximal photodegradation of PAEs occurred at the 2.0 g/L of TiO 2, pH 6.0, and 2.0% of H 2O 2. The importance of these environmental factors in promoting the photodegradation of PAEs were in the following orders: initial concentration of PAEs, radiation time, pH value, concentration of H 2O 2, and concentration of TiO 2. Conclusion The system of ultraviolet light, TiO 2 and hydrogen peroxide was effective in promoting the photodegradation of PAEs. |
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| Keywords: | Phthalic acid esters Photodegradation Kinetics |
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