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Air Pollution 认识空气污染


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Air pollution is the presence of one or more contamination of the air by noxious gases and minute particles of solid and liquid matter (particulates). The main pollutants are sulphur dioxide (SO2), carbon monoxide (CO), nitrogen oxides (NOx), volatile organic compounds (VOCs) and suspended particulate matters (SP).
Many People perceive air pollution to be hazy or smoggy, but on the contrary,
polluted air is colorless and odorless. Pollutants in the form of microscopic bacteria, viruses, dust mite, mold, fungi, pollen spores, and radiation can pose health risks to everyone who breathes the air leading to serious chronic problems.

所谓空气污染,是指含有一种或多种以上的污染物存在于空气中(即:二氧化硫(SO2),一氧化碳(CO),二氧化氮(NOx),挥发性有机化合物(VOCs),悬浮微粒(SP)等)。
这些污染物原本在干净的空气中含量不多,当遭遇到大量污染后,即改变了空气的素质。一般人以为受污染的空气,肯定是黑黑脏脏的,实际上它却是
无色无味,透过花粉,细菌,烟尘,辐射等管道,让我们从无预防的情况下,逐步危害我们的健康。

 

Causes Of Air Pollution:

* Natural Causes : Forest fire, volcaniceruptions, acid rain.  

* Human Activities : Slash and burn, motor vehicle emissions, rubbish burning, industrial fumes, pesticides.

Domestic Sources : Air conditioners, cigarette smoke, carpet, animal fur and odor, insecticides, cooking, bacteria, viruses, paint finishes, cleaning chemicals, radiationfrom electrical appliances, perfumes, air freshners.  

造成空气污染的因素:

* 天然灾害: 森林大火,火山爆发,酸雨。 

* 人为灾害: 烟霾,车辆废气,焚烧垃圾,工业废气,农药。

家居环境:
地毯,宠物,长期使用冷气机,二手烟,防蚊剂,厨房油烟,细菌,病毒,漆料,杀虫剂,清洁剂,香精及加点所产生的。

 

Ideal Living Enviroment Conditions

* Temperature : 20-26'C

* Humidity : 40-60%

* Composition of Air : Nitrogen (78%) , Oxygen (21)

The normal air environment is a mixture of nitrogen (78%) , oxygen (21%) , carbon dioxide (0.2%) and other inert gases.
究竟,一个最适合人类居住的环境,应具备怎样的条件?

* 温度:20-26C

* 湿度:40-60%

* 空气成分:78%氮气,21%氧气

正常的大气环境所含有的78%氮气,21%氧气,以及0.2%的氧化碳和其他气体是人类所需要的。

 

Air Pollution Index Table
以下的空气污染指示图,可供人们更了解空气污染的其概况。

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