探究UV/PS对水中啶虫脒的降解
毕业论文关键词：啶虫脒；高级氧化技术；紫外光；过硫酸盐；高效液相色谱法
Explore the degradation of acetamiprid in water by UV/PS
Abstract： In view of the traditional water treatment technology is difficult to effectively remove the problem of acetamiprid in water, the use of advanced oxidation technology, the use of ultraviolet light activated potassium persulfate degradation of acetamiprid in water. The experiments of the degradation of acetamiprid with UV alone and potassium persulfate alone were carried out to demonstrate the necessity of the combination of UV and persulfate. The effects of substrate concentration, oxidant concentration, pH and anion on the degradation of acetamiprid were studied. The effects of different water bodies on the degradation of acetamiprid were studied and the practicality was analyzed. The results showed that the combination of UV and potassium persulfate could produce sulfate radicals. The lower the concentration of acetamiprid was, the better the degradation effect was. The higher the concentration of persulfate was, the better the degradation was. Under the acidic condition, the effect of UV and persulfate on the degradation of acetamiprid was better. The anions could inhibit the degradation of acetamiprid by persulfate, the most obvious chloride ion, followed by bicarbonate ion and the smallest nitrate ion. The degradation of acetamiprid in different water bodies is different, the higher the concentration of organic matter in water, the worse the degradation effect.
Key words: Acetamiprid；Advanced Oxidation Process；UV；PS；Persulfate；HPLC
目 录
摘要1
关键词1
Abstract1
Key words1
引言1
1 材料与方法2
1.1 试剂及装置 2
1.1.1 实验试剂2
1.1.2 实验装置2
1.2 实验方法2
1.3 测定方法2
2 结果与分析2
2.1 UV、PS和UV/PS联用降解啶虫脒的比较2
2.2 啶虫脒初始浓度的影响3
2.3 PS投加量的影响 4
2.4 pH值的影响4
2.5阴离子对降解的影响5
2.5.1 氯离子的影响5
2.5.2 碳酸氢根离子的影响6
2.5.3 硝酸根离子的影响7
2.6 不同水体的影响7
3 结论8
致谢9
参考文献9
探究UV/PS对水中啶虫脒的降解
啶虫脒（Acetamiprid），是日本曹达公司在1996年开发的一种高效杀虫剂，其实该公司商品化的第三种氯化烟碱类杀虫剂[1-2]。化学名称为N-(N-氰基-乙亚胺基)-N-甲基-2-氯吡啶-5-甲胺，化学式C11H11ClN4，属于亚甲基杂环类化合物[3]，其具有用量少，杀虫谱广泛，活性高，持效长的优点，并且和农业常用的农药没有交互抗性[4]。啶虫脒能够选择性控制害虫的神经系统（烟碱型乙酰胆碱酯酶受体），从而阻断害虫神经系统的正常传导，使害虫麻痹进而死亡[5]。由于啶虫脒在农业生产中的广泛使用，其广泛地存在于环境之中。由于啶虫脒水溶性较好，很容易进入地表水和地下水等饮用水资源中，对人类和其他动物的生存环境以及身体有着很多健康隐患[6]。因此，探究对水中啶虫脒的降解具有很重要的意义。啶虫脒降解是指啶虫脒由复杂结构逐渐分解为简单结构，降低乃至失去其固有的毒性。产生降解的因素有很多，可分为物理、化学、生物等多种因素[7]。
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