北京地区氡及其子体浓度与PM2.5的关系研究
发布时间：2018-11-21 18:49
【摘要】：雾霾问题严重地影响了我们每一天的工作和生活,而雾霾的主要构成之一,PM2.5也逐渐成为人们日常关心的空气质量指标;氡及氡子体对人类健康的影响,尤其在增大肺癌病患的几率方面,也越来越受到人们的关注与预防。鉴于氡及其子体、PM2.5对人类生活和健康的影响之大,研究氡及其子体与PM2.5之间是否存在一定的相关性,则可为针对它们的研究提供不同的角度,还可为氡及其子体在PM2.5形成过程中参与的程度提供理论依据,为环境保护及雾霾治理提供理论基础,进而预防及减小它们对人类生活发展造成的影响。为了研究北京地区氡及其子体与PM2.5 (PM10)的关系,以及它们的变化趋势,同时考虑气象因素在其中的影响,我们使用德国TRACERLAB公司生产的ERS/RDM-2S双通道氡钍及其子体探测仪,在北京市海淀区某地对近地表氡浓度(CRn)、氡平衡当量浓度(EEC-Rn)、钍射气平衡当量浓度(EEC-Tn)进行连续两个月的实时测量,并选择距测点最近的国家气象站点,记录其实时发布的PM2.5、PM10数据及温度、相对湿度等气象数据,进而研究它们的变化趋势及相互之间的关系。通过对这些数据进行整理、作图表及分析,我们发现:2015年11月至2016年1月日均氡浓度为8-33 Bq/m3,平均约21 Bq/m3;日均EEC-Rn、EEC-Tn与PM2.5的相关系数分别为0.668、0.516;日均相对湿度与日均EEC-Rn、PM2.5的相关系数分别为0.597、0.651。由此可以得出结论,氡浓度及PM2.5浓度在实验期间的波动范围较大;EEC-Rn与PM2.5呈明显正相关;EEC-Tn也与PM2.5有一定的相关性;相对湿度与EEC-Rn、PM2.5存在正相关性,在一定程度上能影响它们的变化趋势,且湿度与PM2.5的相关系数更大。
[Abstract]:The problem of haze has seriously affected our daily work and life, and one of the main components of haze, PM2.5 has gradually become a daily concern of air quality indicators; The influence of radon and radon progeny on human health, especially in increasing the probability of lung cancer patients, has been paid more and more attention and prevention. In view of the fact that radon and its offspring have a great impact on human life and health, the study of the correlation between radon and its daughters and PM2.5 can provide different perspectives for their research. It can also provide theoretical basis for the degree of radon and its daughters participating in the formation of PM2.5, provide theoretical basis for environmental protection and haze management, and then prevent and reduce their influence on the development of human life. In order to study the relationship between radon and its progeny and PM2.5 (PM10) in Beijing area, and the trend of their change, and to consider the influence of meteorological factors in them, We use the ERS/RDM-2S dual-channel radon and thorium detector produced by TRACERLAB Company of Germany to detect radon concentration (CRn), equilibrium equivalent concentration (EEC-Rn) near the ground surface in Haidian District of Beijing. The thorium emission equilibrium equivalent concentration (EEC-Tn) was measured in real time for two months in a row, and the national meteorological station nearest to the measuring point was selected to record the PM2.5,PM10 data, temperature, relative humidity and other meteorological data released in real time. Then we study their changing trend and the relationship between them. By collating, charting and analyzing these data, we find that the average daily radon concentration from November 2015 to January 2016 is 8 to 33 Bq/m3, averaging about 21 Bq/m3;. The correlation coefficients between daily average EEC-Rn,EEC-Tn and PM2.5 were 0.668 and 0.516, respectively, and the correlation coefficients between daily average relative humidity and daily average EEC-Rn,PM2.5 were 0.597 and 0.651respectively. It can be concluded that radon concentration and PM2.5 concentration fluctuate in large range during the experiment period, EEC-Rn and PM2.5 are positively correlated, EEC-Tn also has certain correlation with PM2.5. There is a positive correlation between relative humidity and EEC-Rn,PM2.5, which can influence their changing trend to some extent, and the correlation coefficient between humidity and PM2.5 is larger.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X513
本文编号：2347958
[Abstract]:The problem of haze has seriously affected our daily work and life, and one of the main components of haze, PM2.5 has gradually become a daily concern of air quality indicators; The influence of radon and radon progeny on human health, especially in increasing the probability of lung cancer patients, has been paid more and more attention and prevention. In view of the fact that radon and its offspring have a great impact on human life and health, the study of the correlation between radon and its daughters and PM2.5 can provide different perspectives for their research. It can also provide theoretical basis for the degree of radon and its daughters participating in the formation of PM2.5, provide theoretical basis for environmental protection and haze management, and then prevent and reduce their influence on the development of human life. In order to study the relationship between radon and its progeny and PM2.5 (PM10) in Beijing area, and the trend of their change, and to consider the influence of meteorological factors in them, We use the ERS/RDM-2S dual-channel radon and thorium detector produced by TRACERLAB Company of Germany to detect radon concentration (CRn), equilibrium equivalent concentration (EEC-Rn) near the ground surface in Haidian District of Beijing. The thorium emission equilibrium equivalent concentration (EEC-Tn) was measured in real time for two months in a row, and the national meteorological station nearest to the measuring point was selected to record the PM2.5,PM10 data, temperature, relative humidity and other meteorological data released in real time. Then we study their changing trend and the relationship between them. By collating, charting and analyzing these data, we find that the average daily radon concentration from November 2015 to January 2016 is 8 to 33 Bq/m3, averaging about 21 Bq/m3;. The correlation coefficients between daily average EEC-Rn,EEC-Tn and PM2.5 were 0.668 and 0.516, respectively, and the correlation coefficients between daily average relative humidity and daily average EEC-Rn,PM2.5 were 0.597 and 0.651respectively. It can be concluded that radon concentration and PM2.5 concentration fluctuate in large range during the experiment period, EEC-Rn and PM2.5 are positively correlated, EEC-Tn also has certain correlation with PM2.5. There is a positive correlation between relative humidity and EEC-Rn,PM2.5, which can influence their changing trend to some extent, and the correlation coefficient between humidity and PM2.5 is larger.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X513
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