Thesis Type: Postgraduate
Institution Of The Thesis: Bursa Uludağ University, Fen Bilimleri Enstitüsü, Turkey
Approval Date: 2017
Thesis Language: Turkish
Student: Ebru Sarıyer
Supervisor: NURAY AKBUDAKAbstract:
Pollution increased in the world every day which increases the risks of living beings in the living environment. Depending on the industrial development, especially in recent years shows a continuous increase in heavy metal content from waste water. This study, 2014-2015 has been carried out during the spring is made of lettuce and head lettuce varieties grown in irrigated agricultural land by the Nilüfer River and irrigated farmland by the and Lake Iznik in order to determine their heavy metal content. For this purpose; control plants were grown in Uludag University Faculty of Agriculture, Department of Horticulture Research plots which irrigated with tap water. Other plants were planted in agricultural fields irrigated with Nilüfer River and Iznik Lake. Head lettuce (Lactuca sativa is L.var. capitata, Robinson c.v.), lettuce (Lactuca sativa is. L. var longifolia, Adranita c.v.), lettuce (Lactuca sativa is L.var crispa, Funly c.v.) used in the experiment which plants seedlings planted on three plots and regular watering were carried out. In plants after harvest overall quality analysis, amount of heavy metal (Cobalt (Co), Nickel (Ni), Cadmium (Cd), Lead (Pb) and nitrate were determined. In general analysis results are analyzed; Nilüfer River and İznik Lake water samples showed no significant amount of weight while deformed leaf plants have seen an increase in the number depending on the source of irrigation water and pH amounts due to pollution in the two regions were higher. According to the data obtained from the study; the amount of Nickel quantities of samples irrigated with Nilüfer River was determined in Funly lettuce varieties 0,180 mg/kg, Robinson lettuce varieties 0,248 mg/kg, Adranita varieties 0,205 mg/kg. Considering the amount of cadmium, samples irrigated from İznik Lake water was determined in Funly lettuce varieties 0,055 mg/kg and samples irrigated from Nilüfer River water in Adranita lettuce varieties was determined 0,072 mg/kg. As a result of analyzes performed to determine the amount of Lead; samples irrigated from Nilüfer River was found in Funly lettuce varieties 0,126 mg/kg, in Adranita lettuce varieties 0,131 mg/kg and samples irrigated from İznik Lake water was determined in Funly lettuce varieties was determined 0,126 mg/kg, in Robinson lettuce varieties 0,543 mg/kg, in Adranita lettuce varieties 0,943 mg/kg. According to the results obtained of lettuce and head lettuce varieties irrigated from the Nilüfer River and İznik Lake water of Nickel (Ni), cadmium (Cd), lead (Pb) levels were above the limits in general have given by the Turkish Food Codex. In this study; nitrite analysis is also made of the amount of nitrate in the samples taken from the whole plant has been determined that was below the limit given by Turkish Codex Alimentarius.