摘要
利用苏州市2014年4月18日—5月6日空气质量监测资料,分析了苏州市大气中PM10和PM2.5的小时变化规律、日变化规律及其与温度、风速的气象相关性,研究其在空间上的分布,探讨PM10和PM2.5之间的相关性。结果表明：苏州市大气中PM10每小时质量浓度呈双峰分布,上午8∶00左右和下午20∶00左右出现峰值特征,而PM2.5每小时质量浓度呈单峰分布,只在上午8∶00左右出现峰值。PM10和PM2.5的每日变化规律相似,有周期性且周期为3～4d。在空间分布上,PM10质量浓度从高到低的排列顺序是：商业混合区〉居民区〉工业区〉交通干线〉远郊区,PM2.5质量浓度为：工业区〉交通干线〉居民区〉商业混合区〉远郊区。PM10和PM2.5两者之间存在显著相关性。
The changes of hourly PM10 and PM2.5 in the air every day and their correlations with weather in Suzhou were analyzed using the data of air quality in Suzhou City from April 18th to May 6th in 2014. Their distribution was explored as well as the correlation between PM10 and PM2.5. The hourly PM10every day. The first peak appeared about 8：00 am and the bimodal. However, the hourly PM2.5 concentration was unimodal since results showed that there were two peaks of second happened around 8：00 pm. So it was only one peak appeared about 8：00 am. The changes of daily PM10 and PM2.5 were similar. They were periodic during the period of 3 -4d. In addition, the spatial distribution of PM10 was in the order of business mixing zone 〉 residential 〉 industrial zone 〉 transportation Route 〉 outer portation route suburbs. Nevertheless, the spatial distribution of PM2.5 was in the order of industrial zone 〉 trans- 〉 residential 〉 business mixing zone 〉 outer suburbs. PMIo and PM2.5 indicated a significant correlation.
出处
《环境科学导刊》
2015年第4期33-41,共9页
Environmental Science Survey
