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空气质量对人类健康的影响已成为全世界关注的问题。空气中的有益成分主要是氧气和阴离子。当空气中氧含量低于18%时,可使人发生恶心、呕吐、智力活动减弱,甚至出现昏迷和死亡。阴离子可减轻呼吸系统疾病的症状,有镇静、催眠、镇咳、镇痛、利尿、促进食欲、降低血压的作用,使人
The impact of air quality on human health has become a worldwide concern. The beneficial components in the air are mainly oxygen and anions. When the oxygen content in the air is less than 18%, people can nausea, vomiting, decreased mental activity, and even coma and death. Anions can reduce the symptoms of respiratory diseases, sedation, hypnosis, antitussive, analgesic, diuretic, appetite, lower blood pressure, people