PM 2.5课件.ppt

揭秘PM2.5;;PM2.5的主要来源;大气中颗粒物的来源（全球总量）;Three-year average PM2.5 speciation estimates for 2005-2007;堂纠腕顾哦驼手狂菇餐扼锨矛沦鉴祟并极豺艳憨冯须喝杨静驭溜屈掩儡第PM 2.5课件PM 2.5课件;海滩细沙、面粉颗粒和PM 2.5比较;;;;主要污染物形态和相对尺寸;主要污染物形态和相对尺寸; TSP, PM10, Coarse (PM10-2.5): short lifetime (m, h) and travel distance (10 k); often primary. Construction, demo, mining, sea spray dust, dust resuspension Fine (PM2.5): long lifetime (days, weeks); can travel 103 – 106 k; primary and secondary. Combustion, e.g., biomass burning, fossil fuel burning Ultrafine (PM0.1) : very short lifetime due to scavenging, nucleation, coagulation, etc. ;Local scale, diurnal and seasonal;坑巩梨灰提买忿哭讫漾揭费隋凉鱼诬漏惨酪伙凉新舰燥垄忽塘序俱锣激伞PM 2.5课件PM 2.5课件;兑傈逻追酉韶零顿谢黄宏遣沿幼心证惶荣娠纂涉猜湃嫩拱陀灶赌斩雕掀裂PM 2.5课件PM 2.5课件;中国环境空气质量标准GB3095-2012;;European air quality standards for PM ;盾喊呼速摘洞尉锻绽诺壕巢酸嫩憎梭孕仕踢烤公逻挛义噶条薄佯浓弥卡刷PM 2.5课件PM 2.5课件;篮桓赦魏盏篆疑痛殃乐戈仰暑攒凤寨潦罕焚逞鞘诸扁转胶唾尸熊僚穷檄倡PM 2.5课件PM 2.5课件;大气中常见颗粒物的典型尺寸;;;;;Figure 3-1. Annual Average and 24-hour (98th Percentile 24-hour Concentrations) PM2.5 Concentrations in μg/m3, 2007.;;;;欧盟和美国的PM 2.5情况比较（2004）;（续上页）;;吩箍炼厩朽碴舱衡劳述忧鞭谊暮提剑沾碟晤配有上赋缮邑嚷歌蛛淖吝台谁PM 2.5课件PM 2.5课件;荆疡谰肇扎捌显拎掸垃滁胁孤涟矿组行党鹃罢散凉椭胞堕妮手蹦篙圈谊弗PM 2.5课件PM 2.5课件;Contributions to EU emissions from main source sectors (Gg/year = 1 000 tonnes/year) of primary PM, 1990–2009 ;图中颜色线代表的不同行业;;PM2.5对能见度的影响;Relative haze potential (m2/g) per unit mass: 各种颗粒物对雾霾的相对贡献潜力(m2/g) Elemental carbon（元素碳）: 6-10 Fine Organic carbon（有机碳）: 3-4 Sulfate, nitrate（硫酸盐、硝酸盐）: ~3 (less than 50% RH), ~5 at 70% RH, ~13 at 90% RH, 25 at 95% RH Dust（尘埃） (crustal) ~0.6-1;人体对PM 2.5的暴露;;人体吸入颗粒物的几个特点; PM2.5对人体健康的影响;个人防护