海口市两个国家监测点车流量对空气质量影响的调查研究

The impact of traffic on air quality in Haikou city

目的了解海口市空气质量情况,为分析海口市空气状况对健康的影响提供一定借鉴和依据。方法通过收集海口市海南师范大学、海南大学2014年7月12日~7月17日期间PM2.5、PM10、SO2、O3浓度的实时数据,同时监测上下午对应时段（上午时段为8：00~12：00,下午时段为14：00~18：00）车流量和紫外线强度。数据采集后利用Excel 2003,SPSS 16.0等数据分析软件进行统计分析。结果海南师范大学与海南大学空气质量相比较,除PM10、SO2以外,其他指标差异均有统计学意义（P〈0.05）。相关性分析显示,车流量对PM2.5浓度的影响最大,这与汽车尾气中的主要颗粒物是PM2.5有明显关联;紫外线强度对O3浓度的影响较大,这可能是由于紫外线在氮氧化物及烃类物质转化成以臭氧为主要成分的反应中起催化作用。结论海口市这两个监测点空气质量状况均为优,空气质量达到国家一级标准。但海南师范大学车流量明显高于海南大学,其车流量对空气质量指标的影响均较大。

Objective To investigate air quality in Haikou city. Methods Based on the data released by HainanProvincial Environmental Protection Agency from July 12, 2014 to July 24, 2014, the impact of traffic on air quality wasanalyzed. Results Comparing with the air quality in Hainan Normal Universty the concentrations of PM2.5, PM10, SO2, O3 andUV intensity except PM10 and SO2in Hainan Medical University were statistically and significantly different（P〈0.05）. The PM2.5concentration was highly affected by the traffic flow, and the O3 concentration was heavily affected by intensity of ultravioletrays. Conclusions The air quality of two monitoring sites in Haikou city are excellent that attained the national air qualitystandard.The traffic flow in Hainan Normal University was apparently higher than that of the Hainan university, and the airquality is associated with traffic flow.