CAJ | 학술논문

2014年5月~7月利用电称低压冲击器(ELPI)对西安南郊大气可吸入颗粒物数浓度进行了观测.观测分析结果表明,总可吸入颗粒物、核膜态(7~20 nm)、爱根核模态(20~100 nm)、积聚模态(100~1 000 nm)和粗粒子模态(1~10μm)颗粒物数浓度分别为39 595,13 506,14 837,11 201及51个/cm3;核膜态颗粒物数浓度日变化趋势呈现单峰模式,峰值出现在10:00;爱根核模态颗粒物数浓度日变化趋势呈现三峰模式,3个峰值分别出现在8:00,13:00,21:00;积聚模态颗粒物数浓度日变化趋势呈现双峰模式,2个峰值分别出现在13:00和22:00;粗粒子模态颗粒物数浓度日变化趋势呈现三峰模式,3个峰值分别出现在09:00,12:00和24:00;污染程度较低时,以核膜态颗粒物为主的较小粒径颗粒物在粒径分布中占大多数,而污染程度较高时,爱根核模态及粗粒子模态在粒径分布中占大多数;观测期内,周内、周末可吸入颗粒物数浓度粒径分布情况差异不大.
2014년5월~7월이용전칭저압충격기(ELPI)대서안남교대기가흡입과립물수농도진행료관측.관측분석결과표명,총가흡입과립물、핵막태(7~20 nm)、애근핵모태(20~100 nm)、적취모태(100~1 000 nm)화조입자모태(1~10μm)과립물수농도분별위39 595,13 506,14 837,11 201급51개/cm3;핵막태과립물수농도일변화추세정현단봉모식,봉치출현재10:00;애근핵모태과립물수농도일변화추세정현삼봉모식,3개봉치분별출현재8:00,13:00,21:00;적취모태과립물수농도일변화추세정현쌍봉모식,2개봉치분별출현재13:00화22:00;조입자모태과립물수농도일변화추세정현삼봉모식,3개봉치분별출현재09:00,12:00화24:00;오염정도교저시,이핵막태과립물위주적교소립경과립물재립경분포중점대다수,이오염정도교고시,애근핵모태급조입자모태재립경분포중점대다수;관측기내,주내、주말가흡입과립물수농도립경분포정황차이불대.
The inhalation par ticle number density in t he south suburban area of Xian has been analyzed by electrical low pressure impactor (ELPI) from May to July in 2014. The results showed that: the daily number concentration of inhalation particles including:nucleationmode (7~20 nm),Aitken mode (20~100 nm),accumulation mode (100~1 000 nm) and coarse mode(1~10μm) paticles were 39 595cm-3,13 506 cm-3,14 837 cm-3,11 201 cm-3 and 51 cm-3, respectively. The daily variation of nucleation mode particles reached the peak at about 10:00, the Aitken mode reached top at 8:00,13:00 and 21:00, the accumulation mode reached top at 13:00 and 22:00, the coarse mode reached top at 9:00,12:00 and 24:00;The nucleation mode was the largest section when the pollution was not serious, the coarse mode and accumulation mode were the largest section when the pollution was serious. The difference of inhalation particle number density size distribution between weekdays and weekends was not significant.