【摘要】 <正> 1971年Sagan和Khare利用汞灯产生的184.9和253.7nm紫外线照射CH₄-C₂H₆-NH₃-H₂O-H₂S得到低产率半胱氨酸,但照射CH₄-NH₃-H₂O-H₂S体系却没有得到.VanTrump和Miller曾进行过CH₃SH、NH₃、HCN和丙烯醛合成甲硫氨酸试验,并用CH₄-N₂-H₂S-H₂O及痕量NH₃混合物放电实验得到甲硫氨酸（0.03％产率按H₂S计）.Greenberg研究星际空间的化学进化,认为硫是星际空间合成有机分子所必需的,在已鉴定更多还原

【Abstract】 An electric discharge experiments with gaseous mixture of methane, nitrogen, hydrogen sulfide, ammonia and water was carried out in the following way. Thus, a dumb bell-shaped discharge flask of 6dm³ capacity was charged with 2.80×10⁴ Pa of methane, 2.67 X10⁴ Pa of nitrogen, 0.1dm³ of 0.1mol-L^-1 ammonia chloride and sodium sulfide solution （pH8）. It was sparked 24h using a Tesla coil. The products were analyzed by mass spectrometry and gas chromatography. Methionine was synthesised by electric discharge in the presence of H₂S and fourteen amino acids were characterized, of which thirteen occur in proteins. From the results it is suggested that hydrogen sulfide plays an important role in the synthesis of more complicated aminc acids during chemical evolution both on primitive earth and in interstellar space.更多还原