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臭氧概念?

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  • 月涌大江

    臭氧(O₃)是氧气(O₂)的同素异形体,具有以下核心概念:

    基本定义

    臭氧是氧元素的三种同素异形体之一,由三个氧原子组成,在常温常压下为淡蓝色、有特殊臭味的气体。

    自然存在与分布

    主要分布于地球平流层(10-50km),其中20-30km高度浓度最大;

    大气中90%以上的臭氧集中在平流层,对地球生命至关重要(如吸收紫外线)。

    物理性质

    密度比空气高(2.14g/L vs. 1.29g/L);

    低浓度时无色,浓度达15%时呈淡蓝色,液态和固态分别为深蓝色和紫黑色。

    化学性质

    强氧化剂,氧化能力是氯气的1.52倍,反应后仅产生氧气或水,被称为“绿色氧化剂”;

    在常温下不稳定,易分解为氧气。

    应用与危害

    低浓度臭氧可促进血液循环、杀菌,用于医疗治疗(如妇科病、骨关节疾病);

    高浓度臭氧具有刺激性气味,过量吸入可能危害健康。

    2025-11-26 11:35:06
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