In this paper amino acids synthesis in aqueous solution induced by ion implantation,which was possibly ubiquitous on primitive Earth,is investigated.As a discharge using a graphiterod as the anode under a nitrogen atmosphere was performed against ammonia water,it wasfound that three kinds of amino acids were produced.They were glycine,serine and alanine.By introducing ion implantation into the carboxylate solution,ammonia and amino acids werealso formed via nitrogen deposition/fixation.Another isotopic experiment showed that both OHand H radicals played a crucial role in the arc-discharge-promoted reactions in aqueous solutionTherefore,we believe that the impact of ions in the original atmospheric conditions might havefunctioned as a promoter in the chemical origin and evolution of life.
