CAJ | 학술논문

在南昌市布设5个采样点,代表交通干线区、工业区、商业区、居民区以及郊区,于2007年进行气溶胶PM_(2.5)的采样.各采样点测得的数据表明,PM_(2.5)中多环芳烃浓度呈现出夏低冬高的特征,空间分布上,南昌市PM_(2.5)中多环芳烃污染情况为交通干线>工业区>商业区>居民区>郊区,基于这些检测数据,通过因子分析法中的主成分分析法判断PM_(2.5)中多环芳烃的主要来源,利用多元逐步回归法确定各主要污染源对多环芳烃的贡献率.结果表明南昌市的主要污染源车辆排放源(标识物苯并(g,h,i)苝)、燃煤污染源(标识物荧蒽)、焦化污染源(标识物苯并(k)荧蒽)和高温加热源(标识物菲)对南昌市大气PM_(2.5)中多环芳烃的贡献率分别为31.0%、21.1%、25.8%和(14.6%).
재남창시포설5개채양점,대표교통간선구、공업구、상업구、거민구이급교구,우2007년진행기용효PM_(2.5)적채양.각채양점측득적수거표명,PM_(2.5)중다배방경농도정현출하저동고적특정,공간분포상,남창시PM_(2.5)중다배방경오염정황위교통간선>공업구>상업구>거민구>교구,기우저사검측수거,통과인자분석법중적주성분분석법판단PM_(2.5)중다배방경적주요래원,이용다원축보회귀법학정각주요오염원대다배방경적공헌솔.결과표명남창시적주요오염원차량배방원(표식물분병(g,h,i)패)、연매오염원(표식물형은)、초화오염원(표식물분병(k)형은)화고온가열원(표식물비)대남창시대기PM_(2.5)중다배방경적공헌솔분별위31.0%、21.1%、25.8%화(14.6%).
Five sampling areas which represent traffic center,industrial area,commercial area,residential area and the suburb,were set in Nanchang city to collect fine particulate matter in ambient air of 2007.The determined data at various sampling areas illustrated that the polycyclic aromatic hydrocarbons (PAHs) concentration of PM_(2.5) in summer were lower than that in winter.In different areas the pollution severity order of PM_(2.5) was traffic center(worse than),industrial area,commercial area,residential area and suburb.Based on the data,the main sources of PAHs on fine particulate matter (PM_(2.5)) in Nanchang city were estimated by principal component analysis method of factor analysis method.The percentage of contributions of various pollution source to PAHs on fine particulate matter in Nanchang city were calculated by multiple linear stepwise analysis method.The main pollution sources were vehicle emission (identification was benzo(ghi)perylene),coal burning(identification was fluoranthene),high-temperature combustion(identification was benzo(k)fluoranthene) and coking pollution(identification was phenanthren) to PAHs in PM_(2.5) which accounted for 31.0%、21.1%、25.8% and 14.6%.