CAJ | 학술논문

2001年9月30日～10月6日在北京北三环和北四环之间的中国科学院大气物理研究所气象塔院内使用步进采样仪对气溶胶进行了高分辨率连续采样(每2 h采集1个样品),并对样品用PIXE方法进行了元素分析,得到20种元素的浓度.分析结果表明,气溶胶各元素浓度随时间的变化趋势基本一致,且日变化特征显著,早晚出现峰值.降雨期间Ti、Si、Fe等元素浓度急剧下降.S、Pb、Cl、Zn等与人类活动相关的气溶胶元素的富集因子很高.因子分析结果表明,北京秋季大气气溶胶主要源于土壤尘、燃煤尘、工业源和汽车尾气排放等.
2001년9월30일～10월6일재북경북삼배화북사배지간적중국과학원대기물리연구소기상탑원내사용보진채양의대기용효진행료고분변솔련속채양(매2 h채집1개양품),병대양품용PIXE방법진행료원소분석,득도20충원소적농도.분석결과표명,기용효각원소농도수시간적변화추세기본일치,차일변화특정현저,조만출현봉치.강우기간Ti、Si、Fe등원소농도급극하강.S、Pb、Cl、Zn등여인류활동상관적기용효원소적부집인자흔고.인자분석결과표명,북경추계대기기용효주요원우토양진、연매진、공업원화기차미기배방등.
Aerosol samples were collected continuously by a step sampler with a 2-hour time step during 30 September- 6 October 2001 at meteorological tower at the height of 8 m in Beijing. Chemical composition of aerosol samples was analyzed by using PIXE method. The results showed that the diurnal variations of element concentrations were remarkable, and higher pollutant concentrations often occurred in the morning and midnight Enrichment factors of S, Pb, Cl, Zn in atmospheric aerosol in Beijing which had a close relationship with the human activities were very high. Factor analysis for element concentrations further indicated that main sources affecting atmospheric aerosol concentrations in Beijing were soil matters, coal combustion, industry dust and vehicle emission.