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Critical review on the origin of atmospheric oxygen: Where is organic matter?
Planetary and Space Science ( IF 2.4 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.pss.2020.105023
Vadim A. Davankov

Abstract In a short note of 1998 Davankov questioned the generally accepted notion that the unique features of the planet Earth, namely, the presence of life and atmospheric oxygen are inseparably bonded as a case and effect. Indeed, photosynthesis in terrestrial and aquatic phototrophs simultaneously produces oxygen and carbohydrates in almost equal amounts. Since the degradation of organic matter through burning or rotting also consumes an equivalent amount of oxygen, the total masses of oxygen and organic material must always remain comparable. This correlation for Earth appears to be drastically distorted in favor of oxygen, thus disproving the still widespread delusion of biogenic origin of atmospheric oxygen. Instead, by analyzing more recent data on the balance between oxygen and organics we arrive at the conclusion that radiolysis of water vapors with the preferential dissipation of hydrogen to space, most probably, was the major source of the free and oxidation-spent oxygen. The present review tries to illuminate the most important uncertainties that still remain to be clarified before an interdisciplinary and scientifically-balanced picture on the evolution of Earth gets settled.

中文翻译:

大气氧起源的批判性回顾:有机物在哪里?

摘要 在 1998 年的简短说明中,达万科夫质疑了普遍接受的观点,即地球的独特特征,即生命的存在和大气中的氧气作为一个案例和效果是密不可分的。事实上,陆地和水生光养生物的光合作用同时产生几乎等量的氧气和碳水化合物。由于有机物质通过燃烧或腐烂降解也消耗等量的氧气,因此氧气和有机物质的总质量必须始终保持可比性。地球的这种相关性似乎被严重扭曲,有利于氧气,从而反驳了仍然普遍存在的大气氧生物起源的错觉。反而,通过分析关于氧和有机物之间平衡的最新数据,我们得出的结论是,水蒸气的辐射分解以及氢优先向太空消散,很可能是游离氧和氧化消耗氧的主要来源。本综述试图阐明在关于地球演化的跨学科和科学平衡的图景之前仍有待澄清的最重要的不确定性。
更新日期:2020-10-01
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