CAJ | 학술논문

PM2．5等颗粒物已成为我国大气的首要污染物。为了测量上海大气中的颗粒物浓度及其粒径分布，使用电称低压撞击器对其进行采样并分析。测量结果表明，PM2．5颗粒物数量占据了 PM10颗粒物数量的99％以上（其中亚微米颗粒数量更是高达89．76％）PM2．5的质量百分比为52．5％。由此可见，上海雾霾大气颗粒物中 PM2．5颗粒是主要污染物，并成为降低上海市大气可见度的主要因素。
PM2．5등과립물이성위아국대기적수요오염물。위료측량상해대기중적과립물농도급기립경분포，사용전칭저압당격기대기진행채양병분석。측량결과표명，PM2．5과립물수량점거료 PM10과립물수량적99％이상（기중아미미과립수량경시고체89．76％）PM2．5적질량백분비위52．5％。유차가견，상해무매대기과립물중 PM2．5과립시주요오염물，병성위강저상해시대기가견도적주요인소。
PM2 .5 and other particulate matters have become the primary atmosphere pollutants in our country. Recently Shanghai and other places frequently issued the warnings of haze weather.The sky in Shanghai is grey that the visibility is very low.In order to measure the concentration of particulate matter in the atmos-phere of Shanghai and particle size distribution,Finnish imported particle measuring equipment electrical low pressure impactor (ELPI+ )was used to be sampled and analyzed.Measurement results show that the quantity of PM2 .5 occupy more than 99%,of which the number of sub-micron particles is as high as 89.76%,the mass percentage of PM2 .5 was 52.5%.Thus,PM2 .5 are the main pollutants in the Shanghai haze atmospheric which reduced atmospheric visibility in Shanghai,it’s the main factors endanger to the people’s health.