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vol.13 issue5Separation and Pre-concentration of Cadmium, Copper, Lead, Nickel and Zinc by Solid-Liquid Extraction of their Cocrystallized Naphthalene Dithizone Chelate in Saline MatricesOxidative Addition Reactions of I2 with [HIr4(CO)10-n(PPh3 )n(μ-PPh2)] (n = 1 and 2) and Crystal and Molecular Structure of [HIr4(μ-I)2(CO)7 (PPh3)(μ-PPh2)] author indexsubject indexarticles search
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Journal of the Brazilian Chemical Society

Print version ISSN 0103-5053On-line version ISSN 1678-4790


ZAIA, Dimas A. M.; VIEIRA, Heberth J.  and  ZAIA, Cássia T. B. V.. Adsorption of L-amino Acids on Sea Sand. J. Braz. Chem. Soc. [online]. 2002, vol.13, n.5, pp.679-681. ISSN 0103-5053.

A study of adsorption of L-alanine, L-tyrosine, L-glutamic acid, and L-lysine on sea sand was carried out. Only L-lysine showed adsorption on sea sand, probably due to the presence of the positively charged R group. Our results raise some doubts as to whether sand was important for the pre-concentration of amino acids prior to peptide condensation on the Pre-Biotic Earth.

Keywords : adsorption; sand; amino acids; origin of life.

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