摘要
于2008年7月～2010年6月平行采集了TSP、PM10和PM2.5三种大气颗粒物,包括每月例行采样和日夜间采样,并对每个样品进行质量浓度的分析。结果表明:三种颗粒物浓度在7月份达最低值,而最高值出现在1月;与国家二级标准相比较,TSP和PM10在1、2、3、4、11、12月均超标,而PM2.5浓度则高出欧盟标准(15μg.m-3)的2～8倍;从粒径分布来看,全年颗粒物质量分布的变化主要由细颗粒(PM2.5)和粗颗粒(PM2.5～10)引起;三种颗粒物在大部分月份中均表现为日间浓度大于夜间,以12、1、2、3月份最为明显,而在5月和6月表现为夜间大于日间,但差异性较小,7、8、9月日夜间对比也较为不明显。
In order to investigate the concentration characteristic of atmospheric particles,TSP,PM10 and PM2.5 were collected in July 2008 to June 2010.The mass concentration of atmospheric particles is investigated in each month.The results show the three particle concentrations reached the lowest value in July,while the peak in January.Compared with the national secondary standard,TSP and PM10 were exceeded in January,February,March,April,November,and December and PM2.5 concentrations is above 2 to 8 times of the EU standard（15 μg·m-3）.Fine particles（PM2.5） and coarse particles（PM2.5~10） are major component of atmospheric particles.The mass concentration of atmospheric particles on day is higher than at night in major months and lower in May and June.However,it is not obvious in July,August and September.
出处
《黑龙江大学自然科学学报》
CAS
北大核心
2011年第3期374-377,共4页
Journal of Natural Science of Heilongjiang University
基金
国家自然科学基金资助项目(51008106)
