| 大气中SO2的固相氧化研究 |
| 摘要点击 1741 全文点击 1660 投稿时间：1992-10-05 |
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| 中文关键词 二氧化硫 颗粒物 固相氧化 |
| 英文关键词 SO2 acid rain surface oxidation SO2 |
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| 中文摘要 |
| 研究了MgO、CaO、Al2O3、Fe2O3、V2O5、SiO2、Mno2颗粒和工业燃煤、民用燃煤、冶金工业和建材飞灰以及四川部分城市实际大气颗粒物对SO2的固相氧化作用.实验结果表明,7种单组分颗粒对SO2的氢化能力顺序为:MnO2>MgO>CaO>Fe2O3>Al2O3>V2O5>SiO2;污染源飞灰的氧化能力与该颗粒中所含强氧化剂和碱性成分有关,其氧化能力大小为:冶金工业飞灰>民用燃煤飞灰>建材飞灰>工业燃煤飞灰;四川不同城市实际大气颗粒物的氧化能力为:宜宾>自贡>重庆>蛾眉山>乐山>成都.该研究结果为弄清四川酸雨成因和研究防治对策提供了科学依据. |
| 英文摘要 |
| The oxidation of SO2 on the surface of seven kinds of single particles, four kinds of fly ashes from different sources and six air particle samples from different cities were studied. The ability of the oxidants to accelerate the oxidation of SO2 is in the following order: MnO2>MgO>CaO>Fe2O3>Al2O3>V2O5>SiO2. The oxidation ability of fly ashes is closely related to the content of strong oxidants and alkaline compounds in the particles. The order of the sources of particles in their ability to accelerate the oxidation of SO2 is metallurgical fly ash > civilian use coal fly ash > building material fly ash>industry use coal fly ash. For air particle samples at different cities in Sichuan, the order is: Yibin > Zigong > Chongging > Emeshan > Leshan> Chengdu. This results provide scientific basis for understanding the causes of Sichuan acid rain and countermeasure for acid rain control. |
