济南市城区与郊区大气中CO化学特征差异

Differences in chemical characteristics of atmospheric CO in urban and suburban sites in Jinan

为了研究城区和郊区近地面一氧化碳化学特征差异,于2015年1~12月在泉城广场和商河县分别开展了CO连续监测试验。结果表明,济南城区CO年均浓度远高于郊区的年均浓度。城区CO表现出明显的双峰型日变化规律,而郊区CO日变化较为平缓。一周之中,城区CO在周六时浓度最高,郊区浓度变化不大。城郊区CO存在明显的季节变化规律,城区12月浓度最高,7月最低,郊区2月最高,8月浓度最低。相比于郊区站点,城区受到了明显的人为活动的影响。

To characterize the differences of atmospheric CO in urban and suburban areas, the continu- ous monitoring of CO was conducted at Spring City Square and Shanghe in Jinan from January to De- cember of 2015. It was revealed that the annual average concentration of CO in urban area was much higher than that in suburban area. An obvious diurnal variation was observed in the urban site which showed two peaks, in contrast, no obvious diurnal variation was found in the suburban site. In the ur- ban site, higher concentrations of CO were observed on Saturday, but CO in the suburban site showed no much difference during the whole week. A remarkable seasonal variation was indicated： the maxi- mum and minimum CO occurred in December and July for the urban area but in February and August for the suburb. Compared to the suburban site, the urban site was significantly affected by human ac- tivities.