ASPECTS CONCERNING NITRATE AND NITRITE
POLLUTION OF GROUNDWATERS
a. ungureanu, a. unguraşu
ABSTRACT. – Aspects concerning nitrate and nitrite pollution of ground waters. Water is a basic natural resource for the good functioning of all the biological processes in nature. It is very important for life and for the development of human activities. The quality of the ground water has begun to degrade more and more, as a result of the physical, chemical and bacteriological changes. Nitrogen compounds pollution of the underground has increased lately. This has been caused by the excessive and irrational use of nitrogen derived fertilizers, by the wrong storage of the dejections resulted from zootechnical processes and by other chemical substances discharged into water. Samples were collected from different wells in order to check whether the well water was drinkable. The result of the test revealed the existence of high concentrations of nitrates as well as values exceeding normal microbiological parameters. The value recorded in the town of Segarcea, the county of Dolj, showed extremely high concentrations of nitrates of the drinking water in the wells. Thus, Segarcea is the town with the greatest number of contaminated wells in the country.
Keywords: nitrates, pollution with nitrates, groundwaters, methaemoglobinaemie.