石家庄PM_(2.5)变化规律及与其他污染物的相关性分析
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摘要
以河北省重点城市石家庄2014年环境空气质量监测数据为依据,分析了PM_(2.5)的变化规律及其原因,以及PM_(2.5)与其他污染物之间的相关性。结果表明,石家庄PM_(2.5)的最高值出现在1月份,主要原因是冬季雨雪少,且因受太行山阻挡,在高燃煤重污染的条件下,污染物易聚集而不易扩散。由于形成的逆温层不利于污染物扩散,造成夜间浓度高于白天。冬季颗粒物污染是典型的煤烟型污染,燃煤排放在PM_(2.5)中占49%;春季颗粒物污染是混合型污染,扬尘和煤烟尘的分担率在PM_(2.5)中达到了76%。PM_(2.5)浓度与SO_2的变化趋势呈现出显著正相关性、与NO_2具有一定的正相关性、与CO具有一定的正相关性、与O_3呈现负相关性、与VOCs呈现正相关性、和NH_3呈现负相关性。
Based on the monitoring data of environmental air quality in Shijiazhuang of Hebei Province in 2014,the change rule of PM_(2.5) and its causes are analyzed,and the correlation between PM_(2.5) and other pollutants is analyzed.The results show that the maximum value of PM_(2.5) of Shijiazhuang is in January.The main reason is the less rain and snow in winter and the burning coal in Taihang Mountain block with heavy pollution conditions,which cause the pollutants easy to gather and not easy to spread.Due to the formation of the thermal inversion layer is not conducive to the spread of pollutants,the concentration resulting at nighttime is higher than that in the daytime.Particulate matter pollution in winter is a typical smoke type pollution with coal-burning accounting for 49% of PM_(2.5) emissions.Particulate pollution in spring is a mixed pollution with dust and coal dust accounting for 76% of PM_(2.5).The concentration of PM_(2.5) showed a positive correlation with the change trend of SO_2,NO_2,CO and VOCs,and showed a negative correlation with O_3 and NH_3.
Based on the monitoring data of environmental air quality in Shijiazhuang of Hebei Province in 2014,the change rule of PM_(2.5) and its causes are analyzed,and the correlation between PM_(2.5) and other pollutants is analyzed.The results show that the maximum value of PM_(2.5) of Shijiazhuang is in January.The main reason is the less rain and snow in winter and the burning coal in Taihang Mountain block with heavy pollution conditions,which cause the pollutants easy to gather and not easy to spread.Due to the formation of the thermal inversion layer is not conducive to the spread of pollutants,the concentration resulting at nighttime is higher than that in the daytime.Particulate matter pollution in winter is a typical smoke type pollution with coal-burning accounting for 49% of PM_(2.5) emissions.Particulate pollution in spring is a mixed pollution with dust and coal dust accounting for 76% of PM_(2.5).The concentration of PM_(2.5) showed a positive correlation with the change trend of SO_2,NO_2,CO and VOCs,and showed a negative correlation with O_3 and NH_3.
引文
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[3]朱倩茹,刘永红,徐伟嘉,等.广州PM2.5污染特征及影响因素分析[J].中国环境监测,2013,29(2):15-21.
[4]王敬,毕晓辉,冯银厂,等.乌鲁木齐市重污染期间PM2.5污染特征与来源解析[J].环境科学研究,2014,27(2):113-119.
[5]梁俊宁,高敏,王珊.西安市一次严重霾污染天气特征及气象条件分析[J].环境工程,2016,34(8):104-109.
[6]于博,程念亮,李红霞,等.北京市PM2.5组分SO浓度的时空分布及来源分析[J].环境工程,2016,34(7):102-109.
[7]张智胜,陶俊,谢绍东,等.成都城区PM2.5季节污染特征及来源解析[J].环境科学学报,2013,31(11):2947-2952.
[8]张丽华,武捷春,包玉海,等.西安市PM2.5的时空分布特征研究[J].环境工程,2016,34(2):87-90.
[9]杨显双,伍丽梅.重庆市大气颗粒物污染特征及影响因素分析[J].环境工程,2016,34(3):97-101.
[10]潘本锋,汪巍,李莉娜.我国典型城市PM2.5空间分布均匀性分析[J].环境工程,2015,33(5):109-113.
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