Nitrates and nitrites determination in aqueous-soils after gaseous nitric oxides irradiation with UV

Abstract

In the study, nitrogen oxides were prepared from an organic source (meat), nitric acid, the resulting steam and the containers of nitrate ions were projected onto four types of soil (Loam, Silt), which were placed inside the photo reactor by various acidic, base and neutron media, after which the mixture was irradiated within the reactor for an hour. Measurements of nitrate and nitrite concentrations generated after every 15 minutes were performed by the Multi-Direct-Photometer. The absorption and maximum wavelength were measured by UV and visible detecting the oxide formed during the time limit set for the water solution sample to be drawn from all types of soil studied. The results showed that nitrite and nitrite concentrations correspond to the absorption at all times, and the soil that absorbs nitrogen oxides the most is Silt. Therefore, various types of measurements and the proportions of the elements and compounds present in the soil before and after irradiation were studied. Emphasis was placed on the study of PH and EC electrical conductivity, where it was concluded that the values of electrical conduction increase as the concentration of nitrates and nitrites increases. As for PH values, it was found that silt, before irradiation are base-medial, and because of their influence on the acidic mean, which is the highest absorption ratio, after irradiation they were converted to a neutral medium or near acid, Loam soil get the opposite from a type of acid, and because they are affected by the post-irradiation to the base metal.