The role of borosilicate glass in Miller–Urey experiment
Joaquín Criado-Reyes, Bruno Mattia Bizzarri, Juan Manuel Garcı́a-Ruiz, Raffaele Saladino, Ernesto Di Mauro
Abstract
Abstract We have designed a set of experiments to test the role of borosilicate reactor on the yielding of the Miller–Urey type of experiment. Two experiments were performed in borosilicate flasks, two in a Teflon flask and the third couple in a Teflon flask with pieces of borosilicate submerged in the water. The experiments were performed in CH 4 , N 2 , and NH 3 atmosphere either buffered at pH 8.7 with NH 4 Cl or unbuffered solutions at pH ca. 11, at room temperature. The Gas Chromatography-Mass Spectroscopy results show important differences in the yields, the number of products, and molecular weight. In particular, a dipeptide, multi-carbon dicarboxylic acids, PAHs, and a complete panel of biological nucleobases form more efficiently or exclusively in the borosilicate vessel. Our results offer a better explanation of the famous Miller's experiment showing the efficiency of borosilicate in a triphasic system including water and the reduced Miller–Urey atmosphere.