南京市城市不同功能區(qū)PM<sub>10</sub>和PM<sub>2.1</sub>質(zhì)量濃度的季節(jié)變化特征

doi:10.3969/2012jms.00**

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南京市城市不同功能區(qū)PM10和PM2.1質(zhì)量濃度的季節(jié)變化特征
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                        10.3969/2012jms.00**
                    
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基金項目:公益性行業(yè)(氣象)科研專項(GYHY2008060011-1);教育部博士點基金項目(20093228110003);大學生實踐創(chuàng)新訓練計劃項目(10CX015);江蘇省"333高層次人才培養(yǎng)工程"專項;江蘇高校優(yōu)勢學科建設(shè)工程項目(PAPD) 和江蘇省高校研究生科技創(chuàng)新計劃(CXZZ11-0616)資助

Seasonal variations of PM₁₀ and PM_2.1 in different functional areas in Nanjing

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使用Anderson-Ⅱ型9級撞擊采樣器測量了南京市鼓樓商業(yè)區(qū)、江北工業(yè)區(qū)、鐘山風景區(qū)和寧六高速公路交通源春、夏、秋三季的大氣氣溶膠質(zhì)量濃度。分析結(jié)果表明:南京市PM_2.1和PM₁₀的質(zhì)量濃度存在明顯的季節(jié)變化,秋季>春季>夏季;ρ_PM₁₀春季為167.47 μg/m³,夏季為 85.99 μg/m³,秋季為238.99 μg/m³;ρ_{PM_2.1}春季為59.66 μg/m³,夏季為42.80 μg/m³,秋季為100.15 μg/m³。不同季節(jié)中ρ_PM₁₀和ρ_{PM_2.1}均存在較好的相關(guān)性,夏季相關(guān)性最好,相關(guān)系數(shù)為0.952;秋季次之,相關(guān)系數(shù)為0.783;春季相對較差,相關(guān)系數(shù)為0.613。城市不同功能區(qū)之間ρ_{PM_2.1}和ρ_PM₁₀的質(zhì)量濃度值差異很大,交通源>工業(yè)區(qū)>商業(yè)區(qū)>風景區(qū)。城市不同功能區(qū)的質(zhì)量濃度譜分布基本一致,均為雙峰型分布,峰值分別位于0.43~0.65 μm/m³和9.0~10.0 μm/m³。南京市春、夏、秋三個季節(jié)大氣粒子質(zhì)量濃度譜為雙峰分布,粒子主要集中在0.43~3.3 μm/m³的粒徑段。江北工業(yè)區(qū)ρ_PM₁₀和ρ_{PM_2.1}質(zhì)量濃度的相關(guān)系數(shù)為0.814,略高于鼓樓商業(yè)區(qū)的0.797。

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Atmospheric aerosol mass concentration was investigated in Gulou,Jiangbei,Zhongshan districts and Ningliu highway traffic of Nanjing in spring,summer,and autumn by Anderson-Ⅱ-type 9 crash sampler. Results show that the concentrations of PM_2.1 and PM₁₀ revealed obviously seasonal variations: autumn>spring>summer. The concentrations of PM₁₀ are 167.47 μg/m³ in spring,85.99 μg/m³ in summer,and 238.99 μg/m³ in autumn. The concentrations of PM_2.1 are 59.66 μg/m³ in spring,42.80 μg/m³ in summer,and 100.15 μg/m³ in autumn. The correlation between PM_2.1and PM₁₀ appeared well in different seasons with the best correlation coefficient of 0.952 in summer,0.783 in autumn,and 0.613 in spring. The concentrations of PM_2.1 and PM₁₀ differed greatly in various functional areas: traffic source>industry district>business district>scenic spot. The mass concentration spectral in different areas distributed bimodally with the peak values at 0.43-0.65 and 9.0-10.0 μm/m³. The particles' mass concentration spectral showed bimodal distribution in spring,summer,and autumn of Nanjing,which were mainly focused at the diameter of 0.43-3.3 μm/m³. The correlation coefficient between PM_2.1 and PM₁₀ was 0.184 in Jiangbei district,which was slightly higher than that in Gulou district (0.797).

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王紅磊,朱彬,康漢青,沈利娟,潘晨.南京市城市不同功能區(qū)PM₁₀和PM_2.1質(zhì)量濃度的季節(jié)變化特征.氣象科學,2011,(s1):16-23 WANG Honglei, ZHU Bin, KANG Hanqing, SHEN Lijuan, PAN Chen. Seasonal variations of PM₁₀ and PM_2.1 in different functional areas in Nanjing. Journal of the Meteorological Sciences,2011,(s1):16-23

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收稿日期:2011-10-25
最后修改日期:2012-02-20
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在線發(fā)布日期: 2012-09-25
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