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准东地区大规模的露天煤矿开采及工业活动和交通活动使得区域大气颗粒物浓度增加,大气环境恶化,通过分析PM2.5和PM10质量浓度及数量和即时的风速、温度、相对湿度数据,探讨PM2.5和PM10污染特征,确定其时空差异特征及与气象因子的关系,了解我国大规模工矿产区的大气污染特征,可以为区域大气环境治理提供依据。结果表明:1研究区PM2.5、PM10是非均匀化分布,浓度均值低于国家标准限值;2可吸入颗粒物浓度与颗粒数间相关性高,PM2.5浓度与颗粒数的相关系数为0.99,PM10的为0.77;PM2.5与PM10浓度间的相关性高达0.84;3各样点夏秋两季可吸入颗粒物浓度水平较为接近,冬季颗粒物浓度明显高于其它两季;4IDW插值结果显示颗粒物污染浓度的高值区夏季主要分布在研究区的西部,东南部存在小范围高值区;秋季主要集中在西北部;冬季主要聚集在五彩湾煤电煤化工产业带及研究区东部;5研究区PM2.5、PM10的浓度与温度和相对湿度相关性显著,受相对湿度影响更大。与温度呈显著负相关性;与相对湿度呈显著正相关;与风速呈非显著性负相关,相关系数不大。
The large-scale opencast coal mining and industrial activities and traffic activities in the eastern part of the country resulted in the increase of the concentration of atmospheric particulates and the deterioration of the atmospheric environment in the region. The PM2.5 and PM10 mass concentrations and their quantities as well as the instantaneous wind speed, temperature and relative humidity data were discussed. .5 and PM10 pollution characteristics to determine its spatial and temporal differences and the relationship between meteorological factors and understand the characteristics of large-scale industrial and mining areas of our air pollution can provide the basis for the regional atmospheric environment management. The results showed that: 1 PM2.5 and PM10 in the study area were inhomogeneous distribution, the average value of which was lower than the national standard; 2 The correlation between PM2.5 concentration and particle number was high, and the correlation coefficient of PM2.5 concentration and particle number was 0.99 PM10 was 0.77; the correlation between PM2.5 and PM10 concentrations was as high as 0.84; 3 the concentrations of respirable particulate matter in summer and autumn were close to each other, the concentration of winter particulate matter was significantly higher than the other two seasons; 4IDW interpolation results showed that particulate matter pollution Concentration of high value areas in summer mainly in the study area west, there is a small area of high value in the southeast; fall mainly in the northwestern part of the winter mainly gathered in Wucai Wan coal and coal chemical industry belt and east of the study area; 5 study area The concentrations of PM2.5 and PM10 were significantly correlated with temperature and relative humidity, and were more affected by relative humidity. Negative correlation with temperature, negative correlation with temperature, negative correlation with wind speed, and low correlation coefficient.