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对3种类型蚊香(有烟蚊香、微烟蚊香和无烟蚊香)原料、灰烬及烟气样品经索式提取、K-D浓缩和硅胶层析纯化后,采用GC-MS分析其USEPA推荐的16种优控多环芳烃的含量.结果表明,有烟蚊香和微烟蚊香烟气中多环芳烃总含量高于原料中的含量,无烟蚊香则相反.有烟蚊香和微烟蚊香原料以3环和4环多环芳烃为主,无烟蚊香原料以2环和3环多环芳烃为主,3种类型蚊香灰烬和烟气中多环芳烃均以2环、3环和4环化合物为主.通过对比蚊香燃烧前、后样品中多环芳烃的毒性,发现同原料相比,有烟蚊香燃烧后烟气中多环芳烃的毒性显著增加,而微烟蚊香和无烟蚊香则明显减少.
The samples of three kinds of mosquito-repellent incense (mosquito-repellent incense, mosquito-repellent incense and smoke-free mosquito-repellent incense) were extracted by sonicator, KD concentrated and purified by silica gel chromatography. The results showed that the total content of polycyclic aromatic hydrocarbons (PAHs) in the cigarette smoke was higher than that in the raw materials, while the smokeless mosquito was the opposite. And 4-ring polycyclic aromatic hydrocarbons (PAHs). The main raw materials of smoke-free mosquito coils are mainly 2-ring and 3-ring PAHs. The 3 types of mosquito-repellent ashes and polycyclic aromatic hydrocarbons in the flue gas are mainly 2-, 3- and 4-ring compounds By comparing the toxicity of polycyclic aromatic hydrocarbons (PAHs) in samples before and after burning mosquito, it was found that the toxicity of polycyclic aromatic hydrocarbons (PAHs) in the smoldering smoke mosquito significantly increased compared with that of the raw materials, while the mosquito repellent incense and smokeless mosquito repellent incense decreased significantly.