论文部分内容阅读
以新疆准东露天煤矿开采区周边37个测尘点的PM10和PM2.5实测质量浓度为研究对象,运用多元统计学和GIS方法分析了研究区5月、7月、9月和12月的PM10和PM2.5的质量浓度特征、空间分布及其与气象因素(风速、温度和湿度)的关系。结果表明:研究区4个月份的PM10和PM2.5平均质量浓度均未超过国家环境空气质量标准(GB 3095—2012)日均浓度限值,PM10和PM2.5浓度大小顺序为12月>7月>5月>9月。同一月份PM10和PM2.5浓度空间分布格局几乎相同,高浓度区域基本分布在产业区周边。湿度与PM10,PM2.5质量浓度呈较高正相关,温度与PM10呈负相关,与PM2.5在5月、9月和12月呈负相关,在7月呈正相关;风速与PM10,PM2.5在9月和12月呈负相关关系,在5月和7月呈正相关关系。总之,准东煤炭生产对开采区周边空气环境产生了一定影响,湿度是影响粉尘质量浓度和分布的主要因素。
Taking PM10 and PM2.5 measured mass concentrations of 37 dust measuring points around the quasi-Dong open-pit coal mining area in Xinjiang as the research object, multivariate statistics and GIS methods were used to analyze the spatial distribution of PM10 and PM2.5 in May, July, September and December in the study area PM10 and PM2.5 mass concentration characteristics, spatial distribution and its relationship with meteorological factors (wind speed, temperature and humidity). The results showed that the average concentrations of PM10 and PM2.5 in the four months did not exceed the daily average concentration limits of the national ambient air quality standard (GB 3095-2012), and the order of the concentrations of PM10 and PM2.5 was December> 7 Month> May> September. The spatial distribution patterns of PM10 and PM2.5 concentrations in the same month are almost the same, and the high-concentration areas are basically distributed around the industrial area. There was a positive correlation between humidity and PM10 and PM2.5 concentrations. The temperature was negatively correlated with PM10, negatively correlated with PM2.5 in May, September and December, and positively correlated with July. .5 was negatively correlated in September and December and positively correlated in May and July. In conclusion, quasi-east coal production has a certain impact on the air environment around the mining area, and humidity is the main factor that affects the dust concentration and distribution.