CAJ | 학술논문

利用空气质量监测及气象观测数据，对2013年12月初南京市持续重污染天气特征及成因进行分析，结果表明：此次过程表现出污染程度重、持续时间长及细颗粒物占比大等特征，其中 PM2．5日均质量浓度最高达327μg ／m3，超标3．36倍；各化学组分中二次无机盐（SNA）占比高达53．8％，且随着污染加重呈增大趋势；有机碳（OC）／无机碳（EC）比值平均为3．7，二次污染特征显著。分析此次污染成因，一方面是冷空气强度弱及大气静稳等气象条件不利于污染扩散；另一方面本地污染排放叠加区域输送影响，造成细颗粒物积聚增多，形成持续重污染天气。
이용공기질량감측급기상관측수거，대2013년12월초남경시지속중오염천기특정급성인진행분석，결과표명：차차과정표현출오염정도중、지속시간장급세과립물점비대등특정，기중 PM2．5일균질량농도최고체327μg ／m3，초표3．36배；각화학조분중이차무궤염（SNA）점비고체53．8％，차수착오염가중정증대추세；유궤탄（OC）／무궤탄（EC）비치평균위3．7，이차오염특정현저。분석차차오염성인，일방면시랭공기강도약급대기정은등기상조건불리우오염확산；령일방면본지오염배방첩가구역수송영향，조성세과립물적취증다，형성지속중오염천기。
Using air quality monitoring and meteorological observation datasets,the continuing heavy air pollution characteristics and causes in Nanjing were analyzed during the early December in 201 3.The results showed that the pollution was heavy,long lasting and characterized by a large proportion of fine particulate mat-ter.The highest daily average concentration of PM2.5 was up to 327 μg /m3 with the exceeding rate of 3.36.The chemical composition of SNA proportion was as high as 53.8% and as pollution aggravated,it showed an in-creasing trend.With an average OC /EC ratio of 3.7,the secondary pollution characteristics were significant.In-ferential studies showed that,the pollution was on one hand precipitated by weak cold air intensity and atmos-pheric static stability which were against pollutants diffusion.On the other hand,the cumulated influence of the local pollution and inter-regional transportation caused fine particles to accumulate and form a continuous heavily polluted weather.