摘要
利用乌鲁木齐市主城区内四个国控环境空气质量自动监测站点2015—2019年的小时数据,对乌鲁木齐城区大气污染物“周末效应”情况及演变趋势进行研究,并对其产生的原因进行简要分析。研究结果表明:乌鲁木齐大气环境中PM_(10)、PM_(2.5)、SO_(2)呈现出明显的“负周末效应”现象,工作日PM_(10)、PM_(2.5)、SO_(2)浓度分别较周末高出2.2%、3.5%和0.5%。臭氧(O_(3))呈现明显的“正周末效应”,周末臭氧浓度较工作日高出3.5%。周末臭氧前体物CO、NO、NO_(2)浓度较工作日分别低3%、5.9%、2.2%,均呈现明显的“负周末效应”现象。近五年乌鲁木齐市各主要大气污染物“周末效应”偏差呈现逐渐减小的趋势,并在整体上呈现出由“负周末效应”向“正周末效应”转变的趋势。
The weekend effect andvariation of air pollutants in the urban area of Urumqi were analyzed by using the hourly data of four state⁃controlled air quality automatic monitoring stations from 2015 to 2019.The results indicated that,PM_(10),PM_(2.5),SO_(2) present negative⁃weekend effect obviously.The concentrations of SO_(2),PM_(10),PM_(2.5) on weekdays were 2.2%,3.5%and 0.5%higher than those on weekends,respectively.O_(3) presented a significant weekend effect.The concentration on weekends was 3.5%higher than that on weekdays.At the same time,the concentrations of CO,NO,NO_(2) in on weekends were 3%,5.9%and 2.2%lower than those on weekdays,respectively.The ozone precursors presented obvious anti⁃weekend effect.In the past five years,the weekend effect deviations of air pollutants in Urumqi had shown a gradual decrease,and the overall trend had changed from anti⁃weekend effect to weekend effect.
作者
范圣虎
刘宁
张飞云
FAN Shenghu;LIU Ning;ZHANG Feiyun(Urumqi Environmental Monitoring Center Station,Urumqi Xinjiang 830011,China;Xinjiang Agricultural University,Urumqi Xinjiang 830011,China)
出处
《新疆环境保护》
2021年第2期1-7,共7页
Environmental Protection of Xinjiang
