<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Matiatos, I.</style></author><author><style face="normal" font="default" size="100%">Evelpidou, N.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Assessment of groundwater quality contamination by nitrate leaching using multivariate statistics and Geographic Information Systems.</style></title><secondary-title><style face="normal" font="default" size="100%">IAHS-AISH Proceedings and Reports</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><volume><style face="normal" font="default" size="100%">361</style></volume><pages><style face="normal" font="default" size="100%">183-190</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;div&gt;The present study examines nitrate contamination and groundwater quality in the Megara basin of&amp;nbsp;Attica Prefecture (Greece). Hydrochemical data were assessed using descriptive and multivariate statistical&amp;nbsp;analysis to (1) classify the data into hydrochemically similar groups, and (2) to investigate geochemical and&amp;nbsp;human-related factors responsible for the observed groundwater quality. Geographic Information Systems&amp;nbsp;(GIS) were used to incorporate both thematic (landuse) data and groundwater chemistry to study the extent&amp;nbsp;and variation of nitrate contamination and to establish spatial relationships with specific landuse types. The&amp;nbsp;results indicate that more than 70% of the groundwater samples located around the national highway had&lt;/div&gt;
&lt;div&gt;nitrate concentrations that exceeded acceptable levels according to international legislation and guidelines&amp;nbsp;(Directive 98/83/EC, EPA, WHO). The combined spatial analysis and statistical hydrochemical evaluation&amp;nbsp;show that nitrate contamination in groundwater is closely associated with specific landuse classes and&amp;nbsp;activities (e.g. agriculture, pasture, industries, urban effluents).&lt;/div&gt;</style></abstract></record></records></xml>