期刊
ASTROBIOLOGY
卷 9, 期 2, 页码 165-171出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/ast.2007.0143
关键词
Chemical evolution; Origin of life; Metal oxides; Alumina; Ribonucleotides
Interaction of ribonucleotides-namely, 5'-AMP, 5'-GMP, 5'-CMP, and 5'-UMP- with acidic, neutral, and basic alumina has been studied. Purine nucleotides showed higher adsorption on alumina in comparison with pyrimidine nucleotides under acidic conditions. Adsorption data obtained followed Langmuir adsorption isotherm, and X-m and K-L values were calculated. On the basis of infrared spectral studies of ribonucleotides, alumina, and ribonucleotide-alumina adducts, we propose that the nitrogen base and phosphate moiety of the ribonucleotides interact with the positive charge surface of alumina. Results of the present study may indicate the importance of alumina in concentrating organic molecules from dilute aqueous solutions in primeval seas in the course of chemical evolution on Earth.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据