MIHAELA VASILICA ADUMITROAEI, TRAIAN GAVRILOAIEI, ANDREI VICTOR SANDU, GABRIEL OVIDIU IANCU<br>Distribution of Mineral Nitrogen Compounds in Groundwater in Vaslui County (Romania)

MIHAELA VASILICA ADUMITROAEI, TRAIAN GAVRILOAIEI, ANDREI VICTOR SANDU, GABRIEL OVIDIU IANCU
Distribution of Mineral Nitrogen Compounds in Groundwater in Vaslui County (Romania)

Abstract:

Groundwater quality parameters include simultaneous determination of inorganic nitrogen species, in the oxidized (NO2-, NO3-) and reduced (NH4+) forms, together with many other physical and chemical parameters. The objective of this study was to monitor the quality of groundwater in the northern and central part of Vaslui County (Romania), with a particular interest about nitrogen species. It was shown that for two series of groundwater samples taken from the same locations, but in different periods (December 2013 and May 2014), values the maximum Romanian legal limit (NH4+, NO2-) of concentrations were measured for ammonium ions (0.5 mg.L-1), especially, but also for nitrite ions (0.5 mg.L-1). These exceeding values were even more noticeable with samples taken in the spring of 2014, after a mild winter with low amount of precipitations. At that moment were no values of the nitrate ions exceeding the maximum allowed value to justify an intervention of local authorities. An investigation of the agricultural and livestock activities occurring in the area in which the samples were collected outlined a highly probable correlation with the detected conspicuous ammonium concentrations. Keyword: ammonia, nitrite, nitrate, groundwater, quality parameter

Issue: 2016, Volume 67, Issue 12

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