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空气中的雾霾颗粒到底啥样?显微摄影师“张超_摇光”在显微镜下,将这些颗粒放大1000倍,拍摄下这组图片。雾霾是雾和霾的统称,二者很像,但又有不同。雾主要由水汽组成,多见于早晚,一般太阳出来后就会消散,对人体健康影响不大。而霾则不同,它的内核是直径小于2.5微米的颗粒物(Particulate Matter 2.5,简称PM2.5),直径不到人的头发丝的1/20。这些肉眼看不见的超细颗粒,吸入水汽后,膨胀开来,并散射阳光,形成灰色或黄色的“霾”。霾颗粒可被人轻易吸入肺部并进入血液循环系统。在天气晴朗时,人每次吸入的PM2.5大约为50万个,但在雾霾天气中可达5000万个,呼吸道疾病发病率由此会增加3.3倍。
Microscopic photographer “Zhang Chao _ light ” under the microscope, the particles enlarged 1000 times, under the shooting of this group of pictures. Haze is a general term for fog and haze. Both are similar, but different. Fog mainly consists of water vapor, more common in the morning and evening, the general will disappear after the sun comes out, little effect on human health. The haze is different, its core is less than 2.5 microns in diameter particles (Particulate Matter 2.5, referred to as PM2.5), the diameter of less than 1/20 of human hair. These invisible fine particles, after inhaling water vapor, swell and scatter sunlight, forming a gray or yellow “haze.” Haze particles can be easily inhaled into the lungs and into the blood circulation. In fine weather, people inhale PM2.5 about 500,000, but in fog and haze up to 50 million, the incidence of respiratory diseases will increase 3.3 times.