Analysis of products synthesized from simulated primitive planetary atmospheres. I: Amino acids
Analysis of products synthesized from simulated primitive planetary atmospheres. I: Amino acids
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对模拟原始行星大气合成的产品进行分析。
DOI：
10.2116/analsci.7.supple_921
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发表时间：
1991
影响因子：
1.6
通讯作者：
T. Oshima
中科院分区：
文献类型：
--
作者：
Kensei Kobayashi;T. Kaneko;Toshitake Kobayashi;Hui Li;M. Tsuchiya;Takeshi Saito;T. Oshima
用高能质子辐照模拟原始地球大气的混合气体，用液相色谱、气液色谱和液相离子化质谱分析产物中的氨基酸。当用加速器产生的2.8- 40 MeV质子辐照一氧化碳、氮气和水的混合物时，在产物中检测到多种氨基酸。用氰化物选择电极测定了氨基酸前体物质氰化氢。当以甲烷或一氧化碳为碳源时，甘氨酸的G值约为0.02。目前的研究结果表明，宇宙射线是更有效的能源比传统认为的能源，如火花放电的氨基酸的益生元合成。
Gas mixtures simulated primitive earth atmospheres were irradiated with high energy protons, and amino acids in the products were analyzed by liquid chromatography, gas-liquid chromatography and liquid ionization mass spectrometry. When a mixture of carbon monoxide, nitrogen and water was irradiated with 2.8-40MeV protons generated with accelerators, various kinds of amino acids were detected in the products. Hydrogen cyanide, which is believed to be a precursor of amino acids, was determined with a cyanide-selective electrode. G-value of glycine was about 0.02 when either methane or carbon monoxide was used as a carbon source in irradiation experiments. The present results show that cosmic rays are more effective energy sources for prebiotic synthesis of amino acids than conventionally considered energy sources like spark discharges.