氮气有毒吗?

2025-04-03 14:54:52
推荐回答(5个)
回答1:

氮气有毒。空气中氮气含量过高,使吸入气氧分压下降,引起缺氧窒息。吸入氮气浓度不太高时,患者最初感胸闷、气短、疲软无力;继而有烦躁不安、极度兴奋、乱跑、叫喊、神情恍惚、步态不稳,称之为“氮酩酊”,可进入昏睡或昏迷状态。吸入高浓度,患者可迅速昏迷、因呼吸和心跳停止而死亡。

廉价又安定的保护气,用于金属炼制及高温合成时的简单保护性氛围(但其稳定性不及氦气及氩气);高温下用于合成氮化物(如氮化硅陶瓷、氮化硼等)。其化合物亦有用于农业,如氮肥。液态氮有时用于冷却。此外,氮是包装食品的填充气体,用于保持包装外形避免挤压损坏,同时更重要的,隔绝氧气而使食物不变坏。

氮气在生命形成的保护中起重要意义,氮气化学性质稳定,不像其他气体太活跃容易破坏生物结构,但又在大气中起到阻挡太空粒子及陨石冲击作用,而其分子重量,与氧气相约且比氧气轻,不会使氧气被排到太高的空中或太过聚集于地球表面。而且其温室效应不明显,不会使地球表面温度太高。因此给生物提供了一个适合生长和进化的稳定环境。

扩展资料

氮一般被认为是被苏格兰物理学家丹尼尔·卢瑟福在1772年发现的。他发现将生物放入其中都会窒息而死,因而将氮气叫做有害气体(noxious air)或固定空气(fixed air)。卢瑟福清楚空气中有一种成分不支持燃烧。

当时,卡尔·威廉·舍勒,亨利·卡文迪什和约瑟夫·普利斯特里也都在研究氮气。他们将它称为燃烧气(burnt air)或燃素。氮气很不活跃,因此被拉瓦锡称为有毒气体(法语:air méphitique)或azote。azote源于希腊词 ἄζωτος (azotos),意思是 "无生命的"。在氮气里,动物死亡,火焰熄灭。拉瓦锡所给的氮气的名字被用于很多种语言(法语,意大利语,波兰语,俄语,阿尔巴尼亚语,等等),并且还处在于英语的一些化合物的常用名字里,比如肼和叠氮化合物。

参考资料来源:百度百科-氮气

回答2:

氮气没有毒,是一种很惰性的气体,很难发生反应,不过不支持呼吸,全是氮气的话会让人窒息

回答3:

氮气,常况下是一种无色无味无嗅的气体,且通常无毒。但是氮气不能供给呼吸

回答4:

氮气是没有毒的,你碰到的肯定是压缩性氮气,在降压的过程吸收外界热量,人体接触到时感觉到冷,严重时会冻手,甚至冻伤,但只要当时没事就不会有事的。如果十分钟后还有麻木或疼痛的感觉,就马上上医院去吧,找烧伤科治疗

回答5:

氮气无色无味无毒

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