摘要
采用2013年环境空气自动监测数据,分析杭州市空气中黑碳质量浓度的变化规律,并对变化特征的产生原因进行探讨。结果表明:黑碳测定年均值为4.10μg/m3,日变化有明显双峰结构,峰值出现在早7时和晚8时左右;从季节看,黑碳质量浓度冬季高(5.20μg/m3)、夏季低(3.00μg/m3);黑碳质量浓度与NO2、CO、PM10、PM2.5显著相关,与O3、风速、气温呈负相关,降水对黑碳的清除作用明显。
Based on the automatic monitoring data in 2013,this paper analyzed the variation of black carbon (BC)concentration in the ambient air of Hangzhou,and discussed the factors causing the phenomenon.The re-sults showed that the BC annual average value was 4.10 μg /m3 .It was indicated an obvious double-peak pattern in the diurnal variation of BC level with peak appeared at 20:00 and 7:00.BC concentration in winter (5.20 μg /m3 )was much higher than that in summer(3.00 μg /m3 ).BC concentration was significant associated with NO2 、CO、PM10 and PM2.5 ,but negatively related to O3 ,wind speed and air temperature.Precipitation showed obvious scavenging ability for BC.
出处
《环境监测管理与技术》
CSCD
2015年第1期60-62,共3页
The Administration and Technique of Environmental Monitoring
基金
杭州市环保局"大气超细颗粒物理化特征与来源分布及对大气能见度的影响"课题基金资助项目(2012001)
关键词
黑碳监测
质量浓度
变化特征
环境空气
杭州市
Black carbon
Concentration
Variety characteristics
Ambient air
Hangzhou
