摘要
为了解郑州市道路交通高峰期大气中臭氧浓度的分布特征，选取5个监测点于早上（08：00—09：00）、中午（12：00—13：00）、下午（17：00—18：00）3个监测时段对大气臭氧浓度进行监测。结果表明：早上（08：00。09：00）和中午（12：00～13：00）监测时段大气臭氧平均浓度低于《环境空气质量标准》（GB3095—2012）中规定的臭氧1h平均浓度2级标准的限值（0．20mg／m^3），而下午（17：00～18：00）臭氧平均浓度高于该限值，3个监测时段臭氧浓度的超标率分别为53．3％、53.3％、80．0％。不同监测时段之间臭氧浓度差异有统计学意义。5个监测地点中有4个测定地点的臭氧平均浓度均超过0．20mg／m^3，臭氧浓度的超标率分别为77．8％、77．8％、66．7％、55．6％、44．4％。5个监测地点中大气臭氧浓度之间差异无统计学意义。郑州市区大气环境存在一定的臭氧污染问题，有待进一步加强监测和防治。
To provide the basic data of distribution characteristics of atmospheric ozone concentration during road traffic peak hours, ozone concentration was determined in spring in Zhengzhou City. Three monitoring periods （08：00- 09：00, 12：00-13：00, 17：00-18：00） and five monitoring points were selected to determine the ozone concentration. Results showed that the average ozone concentrations during 08：00-09：00 and 12：00-13：00 were below the hourly average concentration of the grade two standard（0.20 mg/m^3） according to the Ambient Air Quality Standard （GB3095- 2012）, and the average ozone concentration during 17：00-18：00 was higher than the value of grade two standard. The ozone concentration in 3 monitoring periods exceeded the standard by 53.3%, 53.3% and 80.0%, respectively. There was significant difference among ozone concentrations of the 3 monitoring periods. The mean ozone concentration at 4 out of 5 monitoring points was higher than the standard value（0.20 mg/m3）. The rates of ozone concentration in the 5 monitoring points exceeded the standard by 77.8%, 77.8%, 66.7%, 55.6% and 44.4% respectively. There was no significant difference among ozone concentrations of 5 monitoring points. There are some ozone pollution problems in the atmospheric environment of Zhengzhou City and monitoring and prevention should be strengthened.
出处
《城市环境与城市生态》
CAS
2013年第5期37-39,共3页
Urban Environment & Urban Ecology
基金
河南省教育厅自然科学基金(12B330004)
郑州大学大学生创新训练计划(2012cxsy131)
