Monica Tarcea, Anca Bacarea, Emoke Fulop, Florina Ruta, Raluca Monica Comaneanu, Violeta Hancu, Alina Ormenisan<br>Chemical Pollution with Nitrates of Underground Water Supplies <br>and Risk Evaluation for Methemoglobinemia on Infants

Monica Tarcea, Anca Bacarea, Emoke Fulop, Florina Ruta, Raluca Monica Comaneanu, Violeta Hancu, Alina Ormenisan
Chemical Pollution with Nitrates of Underground Water Supplies
and Risk Evaluation for Methemoglobinemia on Infants

Abstract:

Underground water is an important source of public supply with drinking water for the rural population and in some areas it is only source of available water. It is well known the toxic action of nitrate upon organisms, by formatting methemoglobin and N-nitroso compounds. In this study it was investigated the levels of nitrates in some well waters, mountain and hill areas in several districts all over the country. The chemical parameters were carried out by following standard methods. Statistical analysis included descriptive data of the water quality parameters associated with data regarding infants hospitalized with methemoglobinemia from the same area and period of time. It was noticed high values of the nitrate concentrations in underground water sources, explained by excessive use of agricultural fertilizer and telluric nitrogen. It was registered also a high number of cases of methemoglobinemia in infants with artificial nutrition, especially boys and during spring season. The maximum methemoglobin level was 58% and the average value of nitrate concentration in the water samples was 284 mg NO3-/L. We established a direct correlation between the level of methemoglobin and the nitrate concentrations in water samples. We underline the importance of monitoring of underground drinking water sources from rural areas especially of those exposed to risk of high levels of nitrates in soil associated with evaluation of risk of exposure to nitrates upon infant population associated with population education about preventive measures required. Keywords: underground water, nitrates, methemoglobinemia, fertilizer

Issue: 2016, Volume 67, Issue 12

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