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Öğe Aromatic hydrocarbons in water and wastewater of Konya-Turkey(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2004) Aydin, ME; Kara, G; Wichmann, H; Bahadir, MIt was the aim of this investigation to monitor aromatic hydrocarbons in drinking water and wastewater of Konya. Samples were taken from the Konya Drinking Water Distribution Network, the Konya Sewerage System and the University Campus Sewer. Water and wastewater samples were analyzed in terms of sum parameters as well as aromatic hydrocarbons, such as ethyl benzene, chlorobenzene, bromobenzene, 1,3-dichlorobenzene, 1,4-dichlorobenzene, 1,2-dichlorobenzene, 1,2,4-trichlorobenzene, and 1,2,3-trichlorobenzene. These substances were extracted using liquid-liquid micro extraction method and analyzed with GC/FID. The level of 1,4-dichlorobenzene was found to be quite high for water samples and possible sources of this compound are discussed.Öğe An investigation into the analytical methods for the determination of selected chlorinated phenols in aqueousphase(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2004) Tor, A; Cengeloglu, Y; Aydin, ME; Wichmann, H; Bahadir, MThe objective of this study was to optimize an analytical method for the analysis of selected chlorinated phenols (2-chlorophenol [2-CP], 2,4-dichlorophenol [2,4-DCP], 2,4,6-trichlorophenol [2,4,6-TCP] and pentachlorophenol [PCP]) in wastewater. Following the EPA Method 604, the optimum analytical method consisted of procedures including a liquid-liquid extraction (LLE) (n-hexane as an organic solvent), a derivatization (according to acylation technique by using of pentafluorobenzoylchloride (PFBC1), a clean-up procedure (silica gel, deactivated with 2 % water, as a sorbent material) and GC-ECD quantification. When including each of these above steps in the analytical procedure, the recovery rates of target compounds were obtained to be > 80 % (RSD: < 10 %, [n=3]).Öğe Polychlorinated biphenyls in wastewater of Konya-Turkey(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2004) Aydin, ME; Sari, S; Ozcan, S; Wichmann, H; Bahadir, MIn this work wastewater samples were collected from 12 points in a sewerage system, the general outlet of the system and different points of the main drainage channel. USEPA method 8082 was used to analyze the PCB congeners 28, 52, 101, 138, 153 and 180, extracted from wastewater by using solid phase extraction cartridges. Recovery ratios were determined to be between 78% and 93% with the analyses of fortified samples. PCB contents of Konya wastewater varied between 0 and 1.3 mug/L for each congener. Possible sources of PCBs in wastewater and some measures to prevent their discharges are discussed.Öğe Priority organic pollutants in fresh and waste waters of Konya-Turkey(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2004) Aydin, ME; Wichmann, H; Bahadir, MIn this work, fresh and waste waters and sediment from Konya water distribution network, sewerage system and main drainage channel, respectively, were collected and analyzed for polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). An analytical procedure for the parallel analysis of PAHs and PCBs was developed. Concentrations of 16 EPA PAHs were found to be up to 1.85 mug/L in fresh water, 8.33 mug/L in waste water, and 744 mug/kg in sewage sediment, whereas the maximum PCB concentrations were 0.044 mug/L in fresh water, 0.19 mug/L in waste water, and 35 mug/kg in sewage sediment. According to literature, PAH concentrations in drinking water partly exceeded EU, German and US EPA maximum admissible levels.Öğe Separation of some priority organic pollutants in wastewater samples by column chromatography(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2004) Tor, A; Cengeloglu, Y; Aydin, ME; Wichmann, H; Bahadir, MThe aim of this work was to develop a fractionation procedure to separate PCBs and PAHs in wastewater extracts, while simultaneously eliminating the interfering substances, a necessary precondition for analysis with nonselective GC detectors. This was carried out by optimizing the fraction cut-off volume of the eluting solvent and deactivation levels of different adsorbents for column chromatography. Using a combined column (5 g aluminum oxide, deactivated with 5% H2O plus 5 g fully activated silica gel) and cutting off PCB collection, after elution with 50 mL n-hexane, led to satisfactory separation of PCBs and PAHs. The approach of this study was to decrease solvent volume and analysis time during cleanup procedure compared to the US EPA standard methods (EPA Methods 610 and 608 for PAHs and PCBs, respectively).
