【作者】 盖轲；

【导师】 高锦章；

【作者基本信息】 西北师范大学 ， 分析化学， 2003， 硕士

【摘要】 等离子体化学随当代科学技术的发展应运而生，作为一个学科交叉的前沿研究领域，自兴起的短短几十年时间，已在化学合成、新材料研制、精细化工合成、表面处理等领域开拓出一系列新技术、新工艺。同时也极大地发展了化学的研究内容。但是将等离子体技术用于降解废水中有机有毒物质的研究才刚刚起步。我们对芳香胺类物质中的苯胺和联苯胺水溶液，应用等离子体技术对其降解的动力学规律和中间产物进行了研究，为污水中芳胺的降解提供了一种行之有效的途径。 芳香胺属于有毒物质，能引起癌症、畸形、肾炎等各种疾病。工业废水中常含有芳香胺类物质。每年都有许多有关芳香胺中毒的突发性事件。研究表明苯胺进入人体后，主要毒作用在于可促使体内产生过多的氧自由基而导致血液中超氧化物歧化酶（SOD）的消耗和丙二醛（MDA）含量的增加，这些作用均是氧自由基造成的病理性变化。因此废水中芳香胺类物质的降解是一项重要的工作。 芳胺的降解目前研究较多的有超临界水氧化法、电化学氧化法、电化学催化降解法、辐射分解法、活性炭-H₂O₂催化氧化降解法等物理化学方法。而用等离子体降解废水中芳香胺类物质却未见报道。 论文由五章组成： 第一章 介绍了等离子体的概念，讨论了应用等离子体降解废水中有机有毒物质的原理，并对等离子体降解废水中芳香胺的前景进行了展望。 第二章 以苯胺溶液模拟苯胺废水，采用接触辉光放电产生的等离子体对苯胺水溶液进行了降解研究。考察了浓度、温度、pH值、催化剂等外界条件对降解速率的影响。 第三章 应用高效液相色谱法对等离子体降解苯胺溶液的中间产物进行了分析，解释了苯胺溶液等离子体降解的机理。 第四章 采用接触辉光放电产生的等离子体对联苯胺水溶液进行了降解研究。对影响降解速率的介质浓度、pH值、催化剂等外界条件进行了分析，应用高效液相色谱法对降解过程的中间产物进行了测定。 第五章 研究了应用高效液相色谱法测定联苯胺溶液等离子体降解的最佳操作条件，解释了联苯胺溶液等离子体降解的机理。更多还原

【Abstract】 Plasma chemistry emerges as the times require along with the present age technology, by way of a subject crossed forward border investigation realm, since arisen brief several decade, have carved out a series of new technique and new craftwork in chemosynthesis, new material developing, fine chemical engineering synthesize, surface disposal and developing greatly chemic investigation content. But it recently start that plasma induced degradation of organic toxicant of wastewater. We investigate dynamic behaviors and intermediate products of the degradation of aniline and benzidine in aqueous solution, and providing a effective approach of degradation of aromatic arriine in waste water.Generally, aromatic amine belongs to toxic substances and it can cause cancer, malformation, nephritis and other diseases. It is one of the major pollutants in water. There are many incidents of toxication by aromatic amine. The investigation showed that more free radials of oxygen would result in less SOD and more MDA in blood, which will damage our health. Therefore, the degradation of aromatic amine is very important.We note in particular the recent investigation with electrochemical oxidation for the degradation of aniline as well as with radiation decomposition, electrochemical catalytic, activated carbon-H2O2 catalytic oxidation, and with supercritical water for the oxidation of aniline. But there are only few reports of degradation of aniline by plasma with CODE.This paper includes five chapters:The chapter 1 provides the principle in degradation of the organic pollutant substances and the foreground in degradation of the aromatic amine by plasma.In chapter 2, the degradation of aniline by plasma with contact glow discharge electrolysis was carriried out, and the influence of the initial concentration, emperature, pH and different mediums of aniline on the reaction kinetic was investigated.In chapter 3, some of the intermediate products of the degradation process in the solution were detected by HPLC and the reaction path in degradation process was explained.In chapter 4, the reaction of benzidine in water induced by the plasma was investigated. The experiment showed that the concentration of medium and the value of pH had anappreciable effect on the degradation of benzidine. Some of the intermediate products of the degradation process in the solution were detected by HPLC.In chapter 5, the suitable separated conditions of degradation process was investigated. Some of the intermediate products were detected by HPLC and the reaction path in degradation process was explained.更多还原