北京不同功能区空气负离子差异的实验研究  

Experimental Research of Negative Oxygen Ion in Different Functional Areas of Beijing

作　　者：孙明珠[1] 田媛[1] 刘效兰[1] 

机构地区：[1]北京工商大学化学与环境工程学院,北京100048

出　　处：《环境科学与技术》2010年第S2期515-519,共5页Environmental Science & Technology

基　　金：京市创新团队项目及国家自然科学基金项目资助(50779001)

摘　　要：文章主要研究了北京市四个功能区共七个观测点的空气负离子浓度变化规律及其对空气质量的影响。研究发现,在交通区、商业区和生活区内,上午10点和下午2点,负离子浓度比较高,而早上8点和晚上6点负离子浓度较低;休闲区则是早上8点和晚上6点负离子浓度较高,而上午10点和下午4点负离子浓度较低。休闲区的空气质量优于生活区,生活区优于商业区和交通区。另外,研究了外界环境条件变化对空气负离子浓度的影响。结果显示,雷雨后空气负离子浓度与雨前相比有较明显增加;而对北京香山不同海拔高度的负离子测定得到,负离子浓度随海拔升高而增大,高海拔地区的空气质量优于低海拔地区;空气负离子浓度室外高于室内,室外空气质量优于室内。This paper mainly researches the regularity for change of the consistency of the negative air ion as well as its effect to the air quality in the four functional regions including seven observing sites in Beijing.We can find out through the research that,in the traffic,commerce and living areas,the consistency of the negative air ion is high in 10:00 am and 2:00 pm,while low in 8:00 am and 6:00 pm.The consistency of the negative air ion in the leisure areas is high in 8:00am,6:00 pm and low in 10:00 am,4:00 pm.In contrast to the results mentioned above,the air quality in the leisure areas is better than that in the living areas,while the air quality in living areas is better than that in commerce areas and traffic areas.In addition,researches on the influence of the external environment condition change to air negative ion have been done.The result shows that,negative ion concentrations increases obviously after the rain;according to the research of the Fragrant Hill Park,the consistency of the negative ion concentration will increase with the altitude rising,so the air quality in the high-altitude districts is better than that in the low-altitude districts;negative ion concentration is higher outdoor than that indoor while the outdoor air is better than that indoor.

关 键 词：城市功能区 空气负离子 空气质量 北京 

分 类 号：X831[环境科学与工程—环境工程]