【摘要】：黑碳是大氣氣溶膠的重要組成部分,能夠吸收太陽輻射產(chǎn)生溫室效應(yīng),并對人體健康產(chǎn)生負(fù)面影響。選取了南京市的6個典型功能區(qū),研究不同污染水平和不同季節(jié)下植物葉面顆粒物黑碳含量的時空分布特征,并將其與地面塵和表層土壤中的黑碳含量進(jìn)行比較,探討黑碳在多介質(zhì)中的分布規(guī)律。結(jié)果表明:(1)城市植物葉面顆粒物的黑碳含量呈現(xiàn)冬季秋季春季≈夏季的季節(jié)變化特征;(2)工業(yè)區(qū)植物葉面顆粒物的黑碳含量最高,并與其他功能區(qū)的差異達(dá)顯著水平;(3)城市植物葉面顆粒物黑碳含量越高,BC/OC值也越大,城市植物葉面顆粒物的黑碳主要來源于化石燃料的燃燒;(4)黑碳?xì)馊苣z通過植被表層到達(dá)地表的過程中其含量逐漸下降,植物葉面顆粒物可作為監(jiān)測大氣黑碳污染的有效手段。
[Abstract]:Black carbon is an important component of atmospheric aerosols, which can absorb solar radiation to produce Greenhouse Effect and have a negative impact on human health. Six typical functional areas of Nanjing were selected to study the spatial and temporal distribution characteristics of black carbon content of plant leaf particulate matter under different pollution levels and seasons, and compared it with the black carbon content in ground dust and surface soil. The distribution of black carbon in multi-media is discussed. The results showed that: (1) the black carbon content of urban plant leaf particles showed the seasonal variation characteristics of winter and autumn spring 鈮，

本文編號：2278361