大气污染的主要危害分类

           不同的大气污染物会对人体和环境带来不同的伤害和影响,以下列出主要大气污染物的来源和危害:
  (1)粉尘:尘主要来源于工业燃煤释放的烟雾颗粒、建筑工地和裸露土面扬起的尘土以及露天堆放的生活垃圾。它们会随着人的呼吸进入支气管,沉积在肺组织中,引起呼吸系统的慢性疾病。

  (2)一氧化碳:一氧化碳主要来源有汽车尾气(主要在汽油燃烧不充分时,如停车状态开发动机)、燃煤、烧荒、有机物燃烧等。一氧化碳在极低浓度时就对人和动物有很大的毒害,轻者眩晕、头疼,重者脑细胞爱到{yj}性损伤,甚至窒息死亡。

  (3)二氧化硫:二氧化硫主要来源于燃煤,如发电厂、工厂和民用烧煤。其它工业过程如炼油等也会产生二氧化硫。二氧化硫形成工业烟雾,高浓度时使人呼吸困难。

  (4)氮氧化物:汽车尾气和燃煤发电厂是氮氧化物的主要来源。它能刺激人的眼、鼻、喉和肺,增加病毒感染的发病率,引起导致xxxx和肺炎的流行性感冒,诱发肺细胞癌变。

  (5)铅粒:使用含铅汽油的汽车尾气会产生铅粒。铅粒随呼吸时入人体,伤害人的神经系统,对于马路边的行人,尤其是孩子极为不利。

  (6)臭氧:臭氧主要是从汽车和工厂释放出的氮氧化物在太阳光照射下与氧气反应生成。臭氧虽然在高空中有过滤太阳紫外线的作用,但在大气层的低处,臭氧却十分有害。

  (7)碳氢化合物:汽车尾气、油箱泄漏、汽油挥发均可产生碳氢化合物。

  (8)煤灰、煤烟和油烟:马路边的早餐摊点,烤肉、烤饼摊,炒菜做饭等餐饮摊点会产生许多煤灰、煤烟和油烟。其中煤灰可沉积入肺,慢慢引起呼吸系统疾病,煤烟和油烟中则含有多种有害的或致癌的物质。

  (9)二恶英:焚烧垃圾、含氯塑料可产生二恶英。它在极低的浓度下就能使鱼类、鸟类和其它动物发生畸变或死亡,并且对人有强致癌作用。

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联系人:邓先生

话:13824479270

真:020-61958831  

址:www. gzychb.com ( 建设中)

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址:广州市番禺区南村兴业路(江南村旁)   邮编:511430

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Contact: Mr. Deng
Tel: 13,824,479,270
Fax :020-61958831
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E-mail: dzhiyong0502@163.com
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