In this study, it was aimed to investigate the water quality data and heavy metal analysis results in Coruh basin by using multivariate statistical analysis methods. Measurement of 21 water quality parameters was evaluated by collecting monthly samples between June 2014 and May 2015 from 14 monitoring sites in Coruh basin. These data were interpreted by using statistical methods such as analysis of variance (ANOVA), cluster analysis, factor analysis/principal component analysis. According to ANOVA analysis, there are statistically significant differences between samples obtained from these 14 monitoring sites in terms of electrical conductivity, Zn, Cd, Cr, Cu, Fe, Mn, NO 2 , SO 4 , alkalinity, Na, K, Ca parameters (p \ 0.05). Two groups were obtained by cluster analysis. The first group consists of the areas with wastewater of mining fields with high heavy metal pollution, and the second group includes areas with domestic wastewater and wastewater coming from agricultural areas causing less pollution. As a result of factor analysis/principal component analysis, four factors were determined. These four factors explain 62.7 % of the data of water quality. It is concluded that water quality is affected by mining activities, domestic wastewater, geological structure and wastewater of agricultural areas. In this study, environmental hazards affecting the water quality of Coruh river basin at different points are identified. Thus, it is expected to guide decision makers and administrators in environmental management works conducted to improve water quality in Coruh basin.
In this study, the removal of Co (II), Cu(II), Fe (III) and Ni(II) ions from the aqueous medium at a certain concentration added to the pure water samples was investigated. Firstly,-one (Schiff base) was synthesized between 4-methoxysalicylaldehyde and 4-aminoantipyrine compounds. Synthesized Schiff base was transformed into metal complexes and the increase in absorptivity in the UV-vis region was determined. Then, solid phase extraction was performed to find the metal ion concentration that the complexes absorbed from the aqueous phase, and the metal ion concentrations remaining in the aqueous phase after the extraction were determined in mg/L level with ICP-OES. According to these results; optimum conditions for the complex for four metal ions; metal-ligand binding ratio (Job's method): 1/2, reaction time: 15 minutes, pH: 6.5, reaction temperature: 25 ºC. In addition, the recovery method was applied separately for Co (II), Cu (II), Fe (III) and Ni (II) ions at a concentration of 0.25, 1.0 and 10 mg/L. The best yield was found to be 85.2% and 96.8% for solutions at 0.25 mg/L concentration.
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