Oxygen

The percentage in mass of the oxygen in oxygenated gasolines in Colombia has averaged 2.9% m/m in the study period, below the maximum regulatory limit of 3.5% m/m between 2010 and March 2021; and the maximum of 3.7% m/m from April 2021 and onwards. Nevertheless, 46 samples (24% of the total samples) did not comply with the regulatory limit between 2013 and 2021.