Document Detail


Nitrogen fixation by corona discharge on the early precambrian Earth.
MedLine Citation:
PMID:  16231204     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We report the first experimental study of nitrogen fixation by corona discharge on the anoxic primitive Earth. The energy yields of nitric oxide (NO) and nitrous oxide (N(2)O) were experimentally determined over a wide range of CO(2)-N(2) mixtures simulating the evolution of the Earth's atmosphere during the Hadean and Archean eras (from 4.5 ba to 2.5 ba). NO, the principal form of fixed nitrogen in lightning and coronal discharge in early Earth, is produced ten times less efficiently in the latter type of electrical discharge with an estimated maximum annual production rate of the order of 10(10) g yr(-1). For N(2)O the maximum production rate was estimated to be approximately 10(9) g yr(-1). These low rates of syntheses indicate that corona discharges as point discharges on the clouds and ground did not play a significant role in the overall pool of reactive nitrogen needed for the emergence and sustainability of life.
Authors:
Delphine Nna-Mvondo; Rafael Navarro-González; François Raulin; Patrice Coll
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Origins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life     Volume:  35     ISSN:  0169-6149     ISO Abbreviation:  Orig Life Evol Biosph     Publication Date:  2005 Oct 
Date Detail:
Created Date:  2005-10-18     Completed Date:  2006-10-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8610391     Medline TA:  Orig Life Evol Biosph     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  401-9     Citation Subset:  IM; S    
Affiliation:
Laboratorio de Química de Plasmas y Estudios Planetarios, Instituto de Ciencias Nucleares, Universidad Autónoma de México, Circuito Exterior, Ciudad Universitaria, Apartado Postal 70-543, México Distrito Federal, 04510, México. dnnamvondo@mail.arc.nasa.gov
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MeSH Terms
Descriptor/Qualifier:
Atmosphere / chemistry*
Biogenesis*
Electrochemistry
Environment*
Evolution, Chemical*
Gas Chromatography-Mass Spectrometry
Lightning*
Nitrogen Compounds / chemistry*
Chemical
Reg. No./Substance:
0/Nitrogen Compounds

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