DBPapers
DOI: 10.5593/SGEM2016/B31/S12.031

DISTRIBUTION OF NITRATE CONCENTRATION IN GROUNDWATER IN SOME RURAL SETTLEMENTS FROM EASTERN ROMANIA

M. Paiu, I.G. Breaban
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-61-2 / ISSN 1314-2704, June 28 - July 6, 2016, Book3 Vol. 1, 235-242 pp

ABSTRACT
Groundwater is a major source of water for a wide range of beneficial uses, the most important resource of fresh water on the planet Earth. All human activities can have a negative impact on the water quality of the aquifer. The quality of groundwater was evaluated in some rural settlements from Eastern Romania.
The present study evaluates the nitrate levels of drinking water from 180 wells from 5 villages located in different counties as follow: 40 wells in Dochia (Neamt), 50 in Vatra Moldovitei (Suceava), 52 in Slobozia (Iasi), 16 in Perieni (Vaslui) and 22 in Nereju (Vrancea). Water samples were collected in November 2013 and a second round of sampling was carried out in March 2014. The nitrate analysis is based on the reaction with sodium salicylate in a sulphuric acid medium, which formed yellow colored salts of nitro salicylic acid.
The nitrate source in the area is: the soil composition, faecal water contamination by non-compliance of location of wells and sanitary conditions, as well as the widespread use of fertilizing substances in agriculture.The land uses category influences the concentration of nitrate in water, arable and urban category being the ones that significantly increases the concentration. In November the nitrate concentration in groundwater varies from 0.06 mg/L to 784 mg/L while in March varies between 0.04 to 313 mg/L. The experimental results indicate exceeding of the normal, nitrate content, due to both natural and anthropogenic sources.

Keywords:nitrate, groundwater, rural settlements