caa a22 4500 465744788 CHVBK 20180323111817.0 cr unu---uuuuu 170327e19900501xx s 000 0 eng 10.1007/BF01808108 doi (NATIONALLICENCE)springer-10.1007/BF01808108 Role of transition metal ferrocyanides (II) in chemical evolution [Elektronische Daten] [Kamaluddin,, Mala Nath, Sushama Deopujari, Archana Sharma] Due to ease of formation of cyanide under prebiotic conditions, cyanide ion might have formed stable complexes with transition metal ions on the primitive earth. In the course of chemical evolution insoluble metal cyano complexes, which settled at the bottom of primeval sea could have formed peptide and metal amino acid complexes through adsorption processes of amino acids onto these metal cyano complexes. Adsorption of amino acids such as glycine, aspartic acid, and histidine on copper ferrocyanide and zinc ferrocyanide have been studied over a wide pH range of 3.6 - 8.5. Amino acids were adsorbed on the metal ferrocyanide complexes for different time periods. The progress of the adsorption was followed spectro-photometrically using ninhydrin reagent. Histidine was found to show maximum adsorption on both the adsorbents at neutral pH. Zinc ferrocyanide exhibits good sorption behaviour for all the three amino acids used in these investigations. Kluwer Academic Publishers, 1990 Kamaluddin, Department of Chemistry, University of Roorkee, 247 667, Roorkee, India aut Nath Mala Department of Chemistry, University of Roorkee, 247 667, Roorkee, India aut Deopujari Sushama Department of Chemistry, University of Roorkee, 247 667, Roorkee, India aut Sharma Archana Department of Chemistry, University of Roorkee, 247 667, Roorkee, India aut Origins of life and evolution of the biosphere Kluwer Academic Publishers 20/3-4(1990-05-01), 259-268 0169-6149 20:3-4<259 1990 20 11084 https://doi.org/10.1007/BF01808108 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01808108 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kamaluddin Department of Chemistry, University of Roorkee, 247 667, Roorkee, India aut NATIONALLICENCE 700 1- Nath Mala Department of Chemistry, University of Roorkee, 247 667, Roorkee, India aut NATIONALLICENCE 700 1- Deopujari Sushama Department of Chemistry, University of Roorkee, 247 667, Roorkee, India aut NATIONALLICENCE 700 1- Sharma Archana Department of Chemistry, University of Roorkee, 247 667, Roorkee, India aut NATIONALLICENCE 773 0- Origins of life and evolution of the biosphere Kluwer Academic Publishers 20/3-4(1990-05-01), 259-268 0169-6149 20:3-4<259 1990 20 11084 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer