2024-03-29T14:47:24Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/130672021-05-12T11:41:26Zcom_10261_44com_10261_4col_10261_297
2009-05-18T07:57:22Z
urn:hdl:10261/13067
The effects of ferrous and other ions on the abiotic formation of biomolecules using aqueous aerosols and spark discharges
Ruiz Bermejo, Marta
Menor-Salván, César
Osuna-Esteban, Susana
Veintemillas-Verdaguer, S.
Aerosol chemistry
Ancient sea
Biomolecules
Ferrous ion
Prebiotic chemistry
Prebiotic environment
Seawater
Ferrocyanide
15 pages, 4 figures, 3 tables.-- PMID: 17899439 [PubMed].-- ISI Article Identifier: 000251368300004.-- Printed version published Dec 2007.
It has been postulated that the oceans on early Earth had a salinity of 1.5 to 2 times the modern value and a pH between 4 and 10. Moreover, the presence of the banded iron formations shows that Fe(+2) was present in significant concentrations in the primitive oceans. Assuming the hypotheses above, in this work we explore the effects of Fe(+2) and other ions in the generation of biomolecules in prebiotic simulation experiments using spark discharges and aqueous aerosols. These aerosols have been prepared using different sources of Fe(+2), such as FeS, FeCl(2) and FeCO(3), and other salts (alkaline and alkaline earth chlorides and sodium bicarbonate at pH = 5.8). In all these experiments, we observed the formation of some amino acids, carboxylic acids and heterocycles, involved in biological processes. An interesting consequence of the presence of soluble Fe(+2) was the formation of Prussian Blue, Fe(4)[Fe(CN)(6)](3), which has been suggested as a possible reservoir of HCN in the initial prebiotic conditions on the Earth.
2009-05-18T07:57:22Z
2009-05-18T07:57:22Z
2007-09-27
artículo
Origins of Life and Evolution of Biospheres 37(6): 507-521 (2007)
0169-6149
http://hdl.handle.net/10261/13067
10.1007/s11084-007-9107-0
1573-0875
http://dx.doi.org/10.1007/s11084-007-9107-0
closedAccess
Springer