Zhang Xin, Li Lian-Fu, Du Zeng-Feng, Hao Xi-Luo, Cao Lei, Luan Zhen-Dong, Wang Bing, Xi Shi-Chuan, Lian Chao, Yan Jun, Sun Wei-Dong
Key Labortory of Marine Geology and Environment & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Geology, Pilot Laboratory for Marine Science and Technology (Qingdao), Qingdao 266061, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China.
Key Labortory of Marine Geology and Environment & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Sci Bull (Beijing). 2020 Jun 15;65(11):958-964. doi: 10.1016/j.scib.2020.03.023. Epub 2020 Mar 14.
Supercritical CO appearing as bubbles in hydrothermal vents was identified in the south part of the Okinawa Trough using in situ Raman spectroscopy. Significantly, the N peak in supercritical CO is much larger than those in seawater and vent fluids, indicating that supercritical CO enriches N from the surrounding environment. Considering that the partial pressures of CO and N in the Earth's proto-atmosphere were ~10-20 MPa, supercritical CO with high N was likely the dominant CO phase near the water-air interface in the early history of the Earth, which promoted the synthesis, pre-enrichment and preservation of amino acids and other organic matters that are essential to the origin of life.
利用原位拉曼光谱法，在冲绳海槽南部发现了在热液喷口中以气泡形式出现的超临界CO。值得注意的是，超临界CO中的N峰比海水和喷口流体中的N峰大得多，这表明超临界CO从周围环境中富集了N。考虑到地球原始大气中CO和N的分压约为10-20 MPa，富含高N的超临界CO可能是地球早期历史上水-气界面附近主要的CO相，这促进了对生命起源至关重要的氨基酸和其他有机物的合成、预富集和保存。
