Browsing by Author "Pekol, S"
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Web of Science Ecotoxicological assessment of metalworking fluids using the Allium cepa test procedure(2014.01.01) Pekol, SPublication Ecotoxicological assessment of metalworking fluids using the Allium cepa test procedure(2014-01-01) Pekol S.; Pekol, SMetalworking fluids (MWFs), which have a long history of use in industry and are in constant and ever-increasing use in parallel with advancements in mechanisation, are emulsions prepared with water. MWFs prepared as a 1/20 (MWF: water) mixture in practice, contain a large amount of water within their structure, and may become an aquatic toxic mixture in an ecosystem. In this study, half maximal effective concentration (EC50) values for MWFs were determined using the Allium cepa test, an accepted ecotoxicological biomonitor, and test solutions were prepared (1/250, 1/500 and 1/1000). Depending on the MWF ratio at each concentration, a decrease in the mitotic index (MI), irregularities in the phase distribution and aberrations in the chromosomes were observed. When the amount of MWF in the water increased, chromosomal abnormalities such as stickiness were observed to occur; whereas abnormalities such as c-mitosis, fragments, bridges, vagrants and micronucleus increased as the amount of the MWF decreased. Over a second 24-h period, it was observed that values, in particular MI, showed a tendency to return to normal. © 2013 © 2013 Taylor & Francis.Web of Science Evaluation of genotoxic and cytologic effects of environmental stress in wheat species with different ploidy levels(2016.01.01) Pekol, S; Baloglu, MC; Celik Altunoglu, YWeb of Science Identification and expression analysis of LEA gene family members in cucumber genome(2016.01.01) Altunoglu, YC; Baloglu, P; Yer, EN; Pekol, S; Baloglu, MCWeb of Science Identification, molecular characterization and expression analysis of RPL24 genes in three Cucurbitaceae family members: cucumber, melon and watermelon(2015.01.01) Baloglu, MC; Ulu, F; Altunoglu, YC; Pekol, S; Alagoz, G; Ese, OWeb of Science The prediction of potential energy and matter production from biomass pyrolysis with artificial neural network(2017.01.01) Aydinli, B; Caglar, A; Pekol, S; Karaci, AWeb of Science The pyrolysis process verification of hydrogen rich gas (H-rG) production by artificial neural network (ANN)(2016.01.01) Karaci, A; Caglar, A; Aydinli, B; Pekol, SWeb of Science The toxic and environmental evaluation of pyrolytic liquids by Allium cepa test(2012.01.01) Pekol, S; Caglar, A; Aydinli, BPublication X-ray fluorescence spectrometry characteristics of oily waste water from steel processing and an evaluation of its impact on the environment.(2018-06-01T00:00:00Z) Pekol, Sefa; Pekol, SMetal-cutting fluids, one of the most consumed materials in the metallurgy industry, turn into oily wastewater after being used in the metalworking processes. The amount of cutting fluids used can reach up to millions of tons. And these invaluable fluids are difficult to distil and expensive, and impossible to store. Even after it is disposed and recaptured, the end product has no commercial value. In this study, the effect of this mixture was examined on the ecosystem using the Allium cepa test system in which onion root tips were treated with three different concentrations of waste-cutting fluid, based on a 24- and 48-h cell cycle. The oily wastewater exhibited a mechanism which triggered the chromosomal and nuclear abnormalities in the onion root-tip meristem and reduced the mitotic index. Common abnormalities observed in the experimental groups based on the water concentration were chromosome stickiness, c-mitosis, and micronuclei formation. In the experimental group with the lowest water concentration, budding nuclei were observed at a different level than all of the other experimental groups. The x-ray fluorescence analysis showed that the concentrations of elements, such as silicon, calcium, iron, and zinc, were higher in the oily wastewater than those in the unused cutting oil.