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    Gis monitoring and evaluation of nitrogen pollution in the waters of Troy, Turkey
    (Parlar Scientific Publications (P S P), 2005) Özcan, H; Kavdir, Y
    Troy in Turkey is not only important from an archeological point of view, but also from an ecological perspective as well. The waters of Troy have been used as drinking source for the birds and other animals and are still used as an irrigation source by farmers. This study was carried out to monitor and determine the amounts of NO3-N, NH3-N and NO2-N ions and their spatial and temporal changes from December 2002 to September 2003 in the Troy water resources. Water samples were collected from 25 sampling points at each sampling time. Samples were preserved according to specific test requirements and immediately analyzed for NO3-N, NH3-N, and NO2-N ions using a LaMotte smart colorimeter. Global positioning system (GPS) was used to determine the coordinates of the sampling points. Producing maps and statistical analyses' results indicate that both ammonia and nitrate nitrogen concentrations started to increase after May in all water resources. These changes were attributed to land use types and crop growing periods in the area. Nitrate concentration ranged from 0 to 45 mg L-1, ammonia from 0 to 118 mg L-1 and nitrite from 0 to 3.5 mg L-1. One well, two drainage canals, and two river samples have.clearly elevated nitrate levels without elevated chloride, and this suggests fertilizers as source of nitrate in water. There are positive and significant linear relationships between nitrate and chloride concentrations in two wells suggesting that the water is being impacted by domestic sewage.
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    Öğe
    Nitrate contamination of the Lower Seyhan Plain in Turkey
    (Parlar Scientific Publications (P S P), 2004) Gül, S; Özcan, H; Sire, E
    Comprehensive sets of soil characteristics were examined to determine the effect of soil texture on the transport of nitrate to groundwater. A single column ion chromatography (SCIC) was used to determine the nitrate, chloride and sulphate in groundwater. Analyzed results and the maps produced showed that groundwater (GW) level, topography and distance to the drainage canal affected GW quality in all the parameters considered. An inverse relationship was observed between clay content of soil and nitrate content.