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每当灰霾蒙蒙,天地混沌之际,俺就象一个四处游荡的幽灵,与无数个伙伴在低空弥漫漂浮。只见高速封闭,轮渡抛锚,飞机趴窝,列车受阻,人们口罩捂面,伸手只见五指,纷纷避之不及。哈哈,这就是俺——空气中的PM2.5。随着国家PM2.5空气环境质量标准即将出台,俺的大名进入公众视野而浪迹江湖。PM是颗粒物的英文缩写,PM2.5特指大气中直径小于或等于2.5微米的颗粒物,也称可入肺颗粒物。大气中PM2.5的含量越高,就意味着空气污染越严重。空气中悬浮颗粒物分为大粒径颗粒物(粒径在11～100微米)和可吸入颗粒物(粒径≤10微米,即PM10)。
Whenever the haze, heaven and earth chaos, I like a ghost wandering around, and countless partners at low altitude filled floating. I saw high-speed closed, the ferry broke down, the aircraft lying nest, the train was blocked, people masks cover the surface, reach out and saw the fingers, have avoided. Haha, this is me - PM2.5 in the air. As the national PM2.5 air quality standards will be introduced soon, my name into the public view and waves rivers and lakes. PM is the abbreviation of particulate matter, PM2.5 specifically refers to the atmospheric particles less than or equal to 2.5 microns in diameter, also known as lung particles. The higher PM2.5 content in the atmosphere means more serious air pollution. Suspended particulate matter in the air is divided into large particle size particles (particle size 11 to 100 microns) and respirable particulate matter (particle size ≤ 10 microns, or PM10).