CAJ | 학술논문

利用大气细颗粒物(PM_(2.5))水溶性组分在线分析系统连续监测了2008年3-4月济南市PM_(2.5)水溶性组分的浓度变化,并结合气溶胶部分前体物SO_2、NO_2、O_3等的浓度数据和部分气象资料对监测数据进行了分析.结果表明,SO_4~(2-)、NO_3和NH_4~+是PM_(2.5)中水溶性离子的主要成分,分别占总水溶性组分的61.1%、13.4%和16.7%.且PM_(2.5)中总水溶性组分的浓度,特别是SO_4~(2-)的浓度,明显高于国内其他城市.温度、太阳辐射强度、混合层高度和风速等气象因素对总水溶性离子的浓度变化有重要影响.SO_4~(2-)浓度白天明显高于夜间,而NO_3和NH_4~+的浓度昼夜变化幅度较小.SO_4~(2-)和NO_3主要由SO_2和NO_2转化而来.后推气流轨迹分析表明,来自东北绕行西南方向和东北方向的混合气团结合济南的特殊地形及局地排放的污染物会加重济南春季PM_(2.5)的污染.
이용대기세과립물(PM_(2.5))수용성조분재선분석계통련속감측료2008년3-4월제남시PM_(2.5)수용성조분적농도변화,병결합기용효부분전체물SO_2、NO_2、O_3등적농도수거화부분기상자료대감측수거진행료분석.결과표명,SO_4~(2-)、NO_3화NH_4~+시PM_(2.5)중수용성리자적주요성분,분별점총수용성조분적61.1%、13.4%화16.7%.차PM_(2.5)중총수용성조분적농도,특별시SO_4~(2-)적농도,명현고우국내기타성시.온도、태양복사강도、혼합층고도화풍속등기상인소대총수용성리자적농도변화유중요영향.SO_4~(2-)농도백천명현고우야간,이NO_3화NH_4~+적농도주야변화폭도교소.SO_4~(2-)화NO_3주요유SO_2화NO_2전화이래.후추기류궤적분석표명,래자동북요행서남방향화동북방향적혼합기단결합제남적특수지형급국지배방적오염물회가중제남춘계PM_(2.5)적오염.
A semi-continuous measurement (ambient ions monitor) of water soluble ions in PM_(2.5) in Jinan was conducted from 31 March to 19 April, 2008. SO_2, NO_2, O_3, and meteorological parameters were also monitored. SO_4~(2-), NO_3~-, and NH_4~+ were the dominant water-soluble fractions, and their proportions were 61.1%, 13.4% and 16.7%, respectively. Compared with other cities in China, concentrations of water-soluble ions, especially SO_4~(2-), were much higher in Jinan in spring. The concentrations of sulfates exhibited a diurnal variation that was generally larger in the daytime than in the nighttime. In contrast, the diurnal variations of nitrate and ammonium were small. The concentrations of total water-soluble ions were strongly related to the meteorological parameters, such as temperature, solar radiation, mixed-layer height and wind. The back-trajectories analysis suggested that the mass concentrations of PM_(2.5) increased while the air masses from northeast-southwest and northeast direction. Additionally, the terrain in Jinan and local pollutants should not be neglected in these polluted events in spring.