Monitorização de íons nitrito nas lagoas de Extremoz, Jacumã, Carcará e Arituba nos anos 2020 e 2021.

Abstract

Industrial and domestic wastes are sources of nitrate and nitrite ions in water. The use of the metropolitan region of the waters of Natal, both in the metropolitan region and in the rural area, can contribute even more urban as in the rural area, with waters of waters near and close, in the zone to contaminate the waters of the waters of Natal and still close , in the zone to contaminate the waters. According to the defense of the Environment, the promoter of water with nitrate in Natal grows in competition. Monitoring of nitrate ions becomes important for human consumption mainly due to its conversion in the stomach to nitrite, known to be toxic for human consumption. Exposure can raise the water level to the oxygen agent by the high pressure by acting as methemoglobin, if the nitrite apparatus in the water enough. On the other hand, exposure to the dangerous amide of nitrite, can result in cancer, even in the stomach after rebellion with amines and contained in chronic foods, to N-nitroso compounds, known to man. The monitoring actions of the metropolitan systems of Natal are captured for the urban region in the metropolitan region of Natal. However, there are gaps in the monitoring of the nitrite ion in the waters of the lagoons, without previous treatment. According to the WHO, the maximum permitted concentration of this toxic compound is 1 mg/L in water intended for human consumption. Therefore, the quantification of at least one of these ions is indicative not only of whether or not the lagoon is suitable for bathing, but also indicative of the quality and extent of basic sanitation in a given region. The monitoring of nitrite ion in the water of these lakes is possible to be carried out and it is important to do so, as it positively impacts the health of the population and the environment, which depend on that water for consumption, since nitrite is known to be toxic. Considering the objectives of the United Nations, more specifically objective 6 -"Ensure the availability and sustainable management of water and sanitation for all", the objective of the present work was to determine and compare the concentration of nitrite ions in the water of the lagoons of Extremoz , Jacumã, Carcará and Arituba located in the metropolitan region of Natal/RN, in the years 2020 and 2021, through molecular absorption spectrophotometry, resulting in concentrations within the limit established by law in the nitrite ion parameter.