【摘要】 对南昌市水泥尘、土壤风沙尘、煤烟尘、生物质燃烧尘、城市扬尘和道路扬尘等主要PM2.5排放源进行采样、分析,建立相应的源成分谱。通过源成分谱特征分析,水泥尘的特征组分为Ca;生物质燃烧尘的特征组分为OC、EC和K;煤烟尘的特征组分为SO₂^4-、OC、EC、Ca、Si和Al;城市扬尘、土壤风沙尘的特征组分为Ca和Si;道路扬尘的特征组分为OC、Ca、Si和Al。道路扬尘和城市扬尘为混合尘,其中包含着土壤风沙尘、煤烟尘、机动车尾气尘和水泥尘等源类特征。更多还原

【Abstract】 PM_2.5 from emission sources such as cement dust, soil dust, coal dust, biomass dust, urban dust and road dust were sampled and analyzed in Nanchang City. Then relevant source profiles were constructed. According to the analysis of source profiles, the characteristic component of cement dust is Ca; the characteristic components of biomass combustion dust are OC, EC and K; the characteristic components of soot dust are SO₂^4-, OC, EC, Ca, Si and Al; The characteristic components of urban dust and soil dust are Ca and Si; the characteristic components of road dust are OC, Ca, Si and Al. Road dust and urban dust are mixed dust, which contains source characteristics such as soildust, coal dust, motor vehicle exhaust dust and cement dust.更多还原