摘要
针对哈尔滨市的PM_(2.5)空气污染问题,收集整理了哈尔滨市2014年全年的空气污染物数据和气象数据,分析研究了当地PM_(2.5)质量浓度变化特征,找出其影响因素。结果表明,哈尔滨市PM_(2.5)日均质量浓度为72.64μg/m^3,初步达到国家标准。PM_(2.5)月均质量浓度11月最高,约为148.27μg/m^3,9月最低,约为21.07μg/m^3。秋冬两季PM_(2.5)平均质量浓度较高。PM_(2.5)/PM10比例春季最低,约为0.5,PM_(2.5)已成为哈尔滨市可吸入颗粒物中的首要污染物。从PM_(2.5)与SO^2、NO^2、CO的相关性来看,哈尔滨市PM_(2.5)与CO的相关性最高,四季均在0.9左右。各类空气污染物的平均浓度降水日低于非降水日。PM_(2.5)与气象因子的相关性较小,与风速呈负相关。
Aiming at the problem of PM2.5 air pollution in Harbin,air pollutants and meteorlogical data in Harbin in 2014 were collected to analyze the variation characteristics and influencing factors of PM2.5 mass concentration. The results indicated that PM2.5daily average mass concentration is 72.64 μg/m^3, which preliminary reaches the national standard. The highest monthly average mass concentration of PM2.5is in November and the lowest is in September, about 148.27 μg/m^3 and 21.07 μg/m^3 respectively. PM2.5average mass concentration in autumn and winter are higher than other seasons. The lowest ratio of PM2.5/PM10 is 0.5 in spring, and it has become the primary pollutant of PM（10）. From the point of view of the correlation between PM2.5and SO2,NO2,CO,PM2.5and CO have the highest correlations, with correlation coefficient about 0.9 in the seasons. The average concentration of various pollutants in precipitation days is lower than in non-precipitation days. The correlation between PM2.5and various meteorological factors are low. PM2.5is negatively correlated with the wind speed.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2016年第3期188-191,共4页
Environmental Science & Technology
基金
哈尔滨市优秀学科带头人基金资助项目(2014RFXXJ040)
