镇江市大气PM10和PM2.5比值特征及来源研究
实验结果表明：镇江市里影响大气中PM2。5与PM10的因素有很多，经检测分析得出，天气原因是主要影响因素，其中下雨天对浓度影响较大，会引起污染物浓度的升高。其次，风速和湿度也是影响其浓度的主要原因，即得出风速的大小与浓度的大小成反比，湿度的大小与浓度的大小成正比；根据各个采样点可溶性阴离子浓度的不同，也得出了各个地方的污染源，学校的主要污染源是化石燃料的燃烧，三茅宫的主要污染源为化工厂气体排放和汽车尾气排放，大市口污染源主要以汽车尾气排放为主。
毕业论文关键词：大气颗粒物；PM2。5；PM10；可溶性阴离子
Abstract In this paper, the main research contents of PM2。5, PM10 and its corresponding chemical components in different regions of Zhenjiang city are studied。From March to May 2016 in Zhenjiang urban areas, residential areas and the outskirts of simultaneous acquisition of PM10, PM2。5 samples。The distribution characteristics of PM2。5 and PM10 concentration at different sampling times in Zhenjiang city were analyzed,And during the period of special period of time and the pollution especially serious pollution period,The change law of PM2。5, PM10 element concentration in Zhenjiang city was analyzed。 At last, the source of PM10 and PM2。5 in different regions and different time in Zhenjiang city was resolved by using ion chromatograph。
The main conclusions of this paper are as follows: Zhenjiang of PM2。5 and PM10 in the atmosphere there are many factors, after testing analysis, we can draw a conclusion that the weather is the main influence factors, including rain days of concentration effect is larger, can cause the increase of pollutant concentration。 Secondly, wind speed and humidity is the main reason for the concentration, namely that the size of the concentration and the size of the wind speed is inversely proportional to, the size of the size and concentration of the humidity is proportional to; according to each sampling point soluble anion concentration can also come to the conclusion that the various local sources of pollution, the main pollution source of the school is the burning of fossil fuels, Sanmao palace the main pollution source for chemical plant emissions and automobile exhaust emission, port city pollution sources mainly in automobile exhaust emissions。
Keywords: Atmospheric particulate matter; PM2。5; PM10; Soluble anion
目 录
第一章 绪论 1
1。1颗粒物的概述 1
1。1。1 颗粒物的来源和分类 2
1。1。2 颗粒物的影响 4
1。1。3 颗粒物的性质 5
1。2 国内外研究现状 7
1。2。1 国内研究现状 7
1。2。2 国外研究现状 8
1。3 课题的研究目的及内容 9
1。3。1 研究目的 9
1。3。2 研究内容 10
第二章 实验材料和方法 11
2。1 实验仪器与试剂 11
2。1。1 实验仪器 11
2。1。2 实验试剂 11
2。2 样品的采集 11
2。2。1采集地点 11
2。2。2 采样时间 13
2。2。3 采样设备 13
2。2。4 采样流程 13