摘要
通过对上海市某商业地下停车库库内及排风管道的连续监测,获得了CO、NO、非甲烷总烃（NMHC）、PM10等空气污染物浓度数据.结果表明：（1）地下停车库的休息日车流量明显大于工作日,且工作日小时车流与车位比为20％～50％、休息日小时车流与车位比为20％～80％.（2）总体上,地下停车库内CO、NO、NMHC浓度呈明显变化规律,营业时间现峰值,非营业时间现谷值;地下停车库内CO、NO、NMHC变化规律和车库排风中具有较好的一致性.（3）车库排风中污染物浓度水平均低于地下停车库内.（4）营业时间的CO、NO、NMHC小时浓度平均值明显增大,约为非营业时间的2.42～3.67倍.（5）单车次CO、NOx、NMHC排放量最大值分别为0.855、0.070、0.214 g/（辆·次）.（6）营业时间,除地下停车库内CO外,NO、PM10的8h时间加权平均值符合《工作场所有害因素职业接触限值化学有害因素》（GBZ 2.1-2007,其中未规定NMHC）中时间加权平均容许浓度（PC-TWA）;地下停车库内CO出现33.3％的超标频率,最大占标率104％.
Concentration of air pollutants,including CO,NO,NMHC and PM10,were gained from continuous monitoring of a commercial underground parking lot and its vent pipe in Shanghai.The results showed that：（1） vehicle flow in the parking garage on weekends was larger than that on working days.The ratio of vehicle number per hour to parking spots on working days and weekends were 20％-50％ and 20％-80％ respectively.（2） The concentrations of CO,NO and NMHC in the garage had an obvious pattern that the peak value appears during the opening hours while the valley value appears during non-business hours.And this pattern was in good agreement with that in the vent pipe.（3） The concentrations of each pollutant in the vent pipe were lower than in the garage.（4） The concentrations of CO,NO and NMHC increased obviously during the opening hours,they were almost 2.42-3.67 times of that in non-business hours.（5） The maximum emissions of CO,NO and NMHC emitted by single car during each parking were 0.855,0.070,0.214 g respectively.（6） The 8 h time weighted average concentrations of NO and PM10 can both meet the standard of occupational exposure limits for hazardous agents in the workplace （GBZ 2.1-2007）.The frequency of over standard of CO in the garage was 33.3％,and the ratio of maximum ground concentration to standard concentration was 104 ％.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2014年第9期55-60,65,共7页
Environmental Pollution & Control
关键词
地下停车库
空气污染物
排放浓度
underground parking lot
air pollutants
emission concentration
