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1、Desalination264(2010)48–55ContentslistsavailableatScienceDirectDesalinationjournalhomepage:www.elsevier.com/locate/desalEcologicalmonitoringofthefreshwatersinStaraZagoraRegion,BulgariaI.QualityanalysesofnitrogencompoundscontentsN.Georgieva⁎,Z.Yaneva,L.DospatlievChemistryUnit,De
2、partmentofPharmacology,PhysiologyofAnimalsandPhysiologicalChemistry,FacultyofVeterinaryMedicine,TrakiaUniversity,StudentsCampus,6000StaraZagora,BulgariaarticleinfoabstractArticlehistory:TheaimofthepresentstudywastheecologicalmonitoringofthenaturalwatersinStaraZagoraRegion,Recei
3、ved29March2010Bulgaria,establishingofadatabaseandcorrelationsregardingthreebasicparameters—nitrates,nitritesandReceivedinrevisedform1July2010ammonium,toprovideaframeworkforsustainablemanagementofthenaturalsurfaceandgroundwatersinAccepted2July2010thestatedregion.Toaccomplishthis
4、goal,theconcentrationsofnitrogencompoundsinrealsurfaceandAvailableonline31July2010groundwatersamplestakenfrom16samplingpointssituatedinfourmunicipalitiesofStaraZagoraRegionwerespectrophotometricallydeterminedandthestatisticalsignificanceofthedatawastested.Keywords:NitratesTheres
5、ultsobtaineddisplayedthatnitrite–nitrogencouldbeclassifiedasapotentialpollutantinthesurface+NitriteswatersfromStaraZagoraandChirpanmunicipalities.NH4–Nconcentrationswereintherangeof0.118–−1Ammonium0.462mgLin6ofthesamples,thuspertainingtoIIcategorysurfacewaters.Thecomparativeanal
6、ysesSurfacewaterprovedthatnitrate–nitrogencouldnotbeclassifiedasacontaminant.ThederivedexponentialcorrelationGroundwaterbetweenNO−–NandNO−–NconcentrationsinTundzhaRiverallowsmathematicalmodellingoftheresults.32Thepresentstudyascertainedthatthepollutionthresholdsforgroundwaters,r
7、egardingnitriteandnitrates,wereexceededinthreesamplingpointsfromStaraZagoraandChirpanmunicipalities.©2010ElsevierB.V.Allrightsreserved.1.Introductiontainingproducts(e.g.corrosion-inhibitors,cleanersandmetal-workingfluids)representthebasicindustrialsourcesofnitrogenProtectingtheq
8、ualityofnaturalwatersisamajorchallengecontamination.In
