通辽市可吸入颗粒物质量浓度变化监测分析

Monitoring Analysis on Mass Concentration of Inhalable Particle in Tongliao

文章基于通辽市2011年6月至2013年5月可吸入颗粒物质量浓度(PM10)资料数据,统计结果表明:(1)PM10年均质量浓度为85.92μg·m-3,未达到国家环境空气质量二级标准;(2)PM10季均质量浓度特征是春季>冬季>秋季>夏季,PM10月平均质量浓度与季节分布基本一致;(3)PM10质量浓度在一周中呈现出单峰变化的特点,不同季节PM10质量浓度周变化不同;(4)PM10质量浓度日变化呈现双峰型分布。PM10浓度峰值从夏季到冬季逐渐推迟,这主要与日出日落时间和其他气象条件,以及上下班交通高峰相关;春季峰值还与沙尘天气发生时间有关。

This paper analyzed PM10 mass concentration from June in 2011 to May in 2013 in Tong Liao city. The results showed that ：（1） Annual average value of PM10 mass concentration was 85.92ug/m^3, which was beyond the secondary standard of national air quality.（2）The seasonal average value characteristics of PM10 mass concentration was spring 〉winter〉 autumn 〉summer, the monthly average value of which was consistent with the seasonal distribution.（3） PM10 mass concentration in the week showed a single-peak variation, the peak concentrations was found on Thursday.（4）The diurnal variation of PM10 mass concentration showed a bimodal distribution. The peak of PM10 mass concentrations gradually postponed from summer to winter, which was mainly related to sunrise and sunset times and other weather conditions, as well as commuting rush.