典型灰霾状况下大气颗粒物浓度变化规律研究——以石嘴山市为研究对象

The Research of the Atmospheric Particulate Concentration Change Law in Typical gray Haze Conditions——Based on Shi Zui Shan City

采用手工监测（重量法）,对宁夏石嘴山市大武口区城区灰霾天气下两个主要空气污染源：崇岗工业园区和某火电厂周边大气中颗粒物PM10进行监测,监测结果显示：在灰霾状况下,石嘴山市区颗粒物粒径主要分布在0级（9.0-10.0μm）和1级（5.8-9.0μm）,所含质量分别占总采样量的54%和25.7%.除去自然因素外,崇岗工业园区大气颗粒物（粒径小于等于10μm）（PM10）对大武口市区PM10贡献率为50%-60%,大武口电厂对大武口市区PM10的贡献率均为40%-50%左右.同时,大武口城区PM10中阴阳离子含量表明,城市汽车尾气也是造成大武口市区PM10浓度升高的原因。

Monitored particles the PM10 of the atmosphere in chung post industrial park and a coal- fired power plant by using the weight method. Monitoring results show that： in the ash haze conditions, the urban particle size are mainly distributed in a level 0 （9.0 - 10.0 microns） and 1 （5.8 - 9.0 microns）in shi zui shan,and the quality of accounting for54% and 25.7% of the total amount of sampling. Remove the natural factors, atmospheric particulates （PM10） （ particle size less than or equal to 10 microns） of chung post industrial park accounted for 50% - 60% in da wu kou , and the contribution rate of PM10 were 40% -40% to the coal - fired power plant. At the same time the automobile exhaust is the cause of its mouth urban elevated PM10 concentration.