华中科技大学：《劳动卫生与职业病学》第四讲 粉尘与尘肺 Dust and Pneumoconiosis

粉尘与尘肺 Dust and pneumoconiosis

粉尘与尘肺 Dust and Pneumoconiosis

粉尘的存在方式

粉尘的存在方式

生产性粉尘 1.定义:生产过程中形成的,能长时间漂浮在 空气中的固体微粒 2.来源 3.分类: 无机粉尘:金属、非金属、人工无机性粉尘 有机粉尘:动物性、植物性、合成材料粉尘 混合性粉尘

一、生产性粉尘 1. 定义：生产过程中形成的，能长时间漂浮在 空气中的固体微粒。 2. 来源 3. 分类： 无机粉尘：金属、非金属、人工无机性粉尘 有机粉尘：动物性、植物性、合成材料粉尘 混合性粉尘

生产性粉尘

生产性粉尘

Dust Exposure in workplace Photograph by k岸 as LNA NIOSH Construction workers drilling hole in concrete pavement during high repair

Dust Exposure in workplace Construction workers drilling hole in concrete pavement during high repair

生产性粉尘

生产性粉尘

A simplified illustration of the possibly complex chemical heterogeneity of PM PAH e Amonia

Core Amonia V NO 3 - As Z n Fe Cu Ca Si Pb SO 4 2- PAH Ni Core Amonia V NO 3 - As Z n Fe Cu Ca Si Pb SO 4 2- PAH Ni A simplified illustration of the possibly complex chemical heterogeneity of PM

环境中常见粉尘 Silica, quartz Silicate: asbestos,talc,mica(云母), cement Carbon dust: coal dust, carbon black, graphite(AAg) activated carbon Mixed dust: mineral dust Organic dust: cotton dust. leather dust

环境中常见粉尘 • Silica, quartz • Silicate: asbestos, talc, mica(云母）, cement • Carbon dust: coal dust, carbon black, graphite(石墨）, activated carbon • Mixed dust：mineral dust • Organic dust: cotton dust, leather dust

硅与石英的存在 Quartz crystal硅占地壳组分的289 含硅矿石分布十分广泛 游离二氧化硅常以石英代表 所有岩石和矿石中都有含有 定量的石英 Ni DQi2 Quartz 石英在某些行业的作业过程中 形成很微小的颗粒 10mm 1负mm126kU262E3鱼9x鱼

• 硅占地壳组分的28% • 含硅矿石分布十分广泛 • 游离二氧化硅常以石英代表 • 所有岩石和矿石中都有 含有 一定量的石英 Quartz crystal 石英在某些行业的作业过程中 形成很微小的颗粒 10mm DQ12 Quartz 硅与石英的存在

CU. canning electron micrograph of silica particles, which are irregular and sharp. Silicon peak on energy dispersive x-ray analysis

Scanning electron micrograph of silica particles, which are irregular and sharp. Silicon peak on energy dispersive x-ray analysis