June 20, 2022

Amino acids generated from hydrated Titan tholins: Comparison with Miller–Urey electric discharge products

Authors: H.J. Cleaves II, C. Neish, M.P. Callahan, E. Parker, F.M. Fernández, J.P. Dworkin Various analogues of Titan haze particles (termed ‘tholins’) have been made in the laboratory. In certain geologic environments on Titan, these haze particles may come into contact with aqueous ammonia (NH3) solutions, hydrolyzing them into molecules of astrobiological interest. A Titan tholin analogue hydrolyzed in aqueous…

zach Uncategorized 0 1 min read
June 20, 2022

The Radiolysis of Aqueous Acetonitrile: Compounds of Interest to Chemical Evolution Studies

Authors: I.G. Draganić, S. Jovanić, V. Niketić, Z.D. Draganić, Oxygen-free aqueous solutions of CH3CN (0.1 M, pH 6) were ex- posed to gamma rays from a 60Co source,the mixture of non volatile radiolytic products was fractionated and the fractions were analysed. Succinic,maleic, fumaric, malonic andpyruvic acids were identified. Glycol aldehyde,glucose and probably ribose were observed in the hydrolysate of fractionated…

zach Uncategorized 0 48 sec read
June 20, 2022

Abiotic synthesis of amino acids by x-ray irradiation of simple inorganic gases

Authors: Jun-ichi Takahashi, Teruo Hosokawa, Hitomi Masuda, Takeo Kaneko, Kensei Kobayashi, Takeshi Saito, Yuichi Utsumi 1–2 keV x-ray irradiation was carried out using a synchrotron radiation source on simulated primitive earth environment: a gas mixture of carbon monoxide, nitrogen, and water at atmospheric pressure. High-speed liquid chromatography of the hydrolyzed product solution detected amino acids. The amount of amino acids…

zach Uncategorized 0 34 sec read
June 20, 2022

The Radiolysis of Aqueous Ammonium Cyanide: Compounds of Interest to Chemical Evolution Studies

Authors: Z. D. Draganić, V. Niketić, S. Jovanović, I. G. Draganić Oxygen-free aqueous solutions of NH4CN (0.1 M, pH 9) were exposed to gamma rays from a60Co source, the mixture of nonvolatile products was fractionated, and the fractions were analyzed. The procedures were chosen to make effective investigations of radiolytic products, and to minimize the contributions of chemical changes which…

zach Uncategorized 0 57 sec read
June 20, 2022

Formation of Acetamide in Interstellar Medium

Authors: L. Foo, A. Surànyi, A. Guljas, M. Szőri, J. J. Villar, B. Viskolcz, I. G. Csizmadia, A. Rágyanszki, B. Fiser Acetamide (C2H5NO) is the largest molecule containing a peptide bond, which is an amine (-NH2) group bonded to a carbonyl (C = O) group, that has yet been detected in interstellar medium (ISM). It is also considered to be…

zach Uncategorized 0 56 sec read

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