Browsing by Subject "Inductively coupled plasma-optical emission spectrometry"

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    Novel metal(II) complexes with bidentate Schiff base ligand: Synthesis, spectroscopic properties and dye decolorization functions
    (Polish Academy of Sciences, 2016) Karakaya C.; Dede B.; Cicek E.
    The bidentate Schiff base ligand 4-chloro-2-[1-(4-phenylphenyl)ethylideneamino]phenol and its mononuclear Co(II), Ni(II), Cu(II) and Zn(II) complexes have been synthesized. Ligand and metal complexes were characterized by elemental analyses, magnetic susceptibility, molar conductivity, 1H- and 13C-NMR, the Fourier transform infrared, UV-Vis, inductively coupled plasma optical emission spectrometry, and thermogravimetric-differential thermogravimetric studies. The results suggest that the mononuclear complexes have a metal to ligand mole ratio of 1:2 and the metal(II) ions are coordinated with the phenolic oxygen and imine nitrogen atoms. Octahedral structures are proposed for the complexes of the Schiff base ligand. Furthermore, the complexes were checked for their efficiency to decolorize the dye methylene blue. In our experiments we found that metal(II) complexes had an acceptable decolorization efficiency against the dye methylene blue.
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    Cytotoxic, genotoxic, oxidative, and irritant effects of zinc pyrithione in vitro
    (Taylor and Francis Ltd., 2020) Güner A.; İlhan S.
    Zinc pyrithione is an organometallic compound with antimicrobial activity used in many industrial products. In this study, cytotoxicity (cell viability, lactate dehydrogenase release, proliferation rate, and mitotic index) and genotoxicity (sister chromatid exchange and micronucleus test) of zinc pyrithione on human lymphocytes were determined. Intracellular zinc concentrations were determined by inductively coupled plasma-optical emission spectrometry. Intracellular antioxidant/oxidant status was evaluated by total antioxidant capacity and total oxidative status assays. Its irritation potential was investigated using the hen’s egg test chorioallantoic membrane model. Up to the highest concentration of 1000 nmol/L, ZnPT did not cause genotoxicity and did not change the proliferation index. Above 500 nmol/L, zinc pyrithione caused an increase in lactate dehydrogenase, oxidative stress, and intracellular zinc levels, while decreasing cell viability and mitotic index level. At 1000 nmol/L, zinc pyrithione caused slight irritation. These results suggest that zinc pyrithione may exert toxic effects via increased oxidative stress on human cellular systems. © 2020 Informa UK Limited, trading as Taylor & Francis Group.