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    Wyświetlanie 1-2 z 2
    Tytuł:
    Determination and removal of perfluorinated alkyl compounds (PFAs) in industrial wastewaters
    Autorzy:
    Kümük, Ediz
    Baycan, Naval
    Powiązania:
    https://bibliotekanauki.pl/chapters/31233756.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    PFAs
    PFOS
    persistent
    perfluorinated
    industrial
    wastewater
    treatment
    adsorption
    filtration
    Opis:
    Perfluorinated Alkyl Compounds (PFAs) are highly produced and used materials in various fields. Due to their unique properties like water repellence and grease repellence, they are very useful as surfactants and surface protectors. However, since having a strong structure these materials are highly resistant and accumulative in the environment. Because of their persistent nature and harmful potential, they are listed within materials in Stockholm Convention as persistent organic pollutants (POPs) and all uses of PFAs and derivatives are restricted. Since PFAs cannot be treated biologically, advanced treatment processes like advanced oxidation, adsorption, and membrane filtration are utilized for their removal. Within this work, their occurrence and treatment situations will be evaluated according to the literature data.
    Źródło:
    Innovations – Sustainability – Modernity – Openness. Modernity in engineering; 73-90
    9788366391901
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oxidative stress and apotosis to zebrafish (Danio rerio) embryos exposed to perfluorooctane sulfonate (PFOS) and ZnO nanoparticles
    Autorzy:
    Du, Jia
    Cai, Jun
    Wang, Shutao
    You, Hong
    Powiązania:
    https://bibliotekanauki.pl/articles/2161865.pdf
    Data publikacji:
    2017-03-30
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    ZnO nanoparticles
    perfluorooctane sulfonate
    PFOS
    zebrafish
    Oxidative stress
    Apoptosis
    Opis:
    Objectives Perfluorooctane sulfonate (PFOS) and zinc oxide nanoparticles (ZnO-NPs) are frequently detected in the environment but few studies have assessed the joint toxicity of them. Oxidative stress and apoptosis to zebrafish (Danio rerio) embryos induced by the PFOS and ZnO-NPs were investigated in this study. Material and Methods The embryos were exposed to the PFOS (0, 0.4, 0.8 and 1.6 mg/l), ZnO-NPs (12.5, 25, 50 mg/l) and PFOS plus ZnO-NPs (0.4+12.5, 0.8+25 and 1.6+50 mg/l) mixture solutions until 96 h post-fertilization. Activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (Gpx) and malondialdehyde (MDA) content were measured in zebrafish embryos after exposure lasting for 96 h. At the same time, the genes expression related to reactive oxygen species (ROS) generation, oxidative damage and apoptosis were also measured. Results A significant induction of the ROS accompanied by the increase in the activity of the Gpx and MDA contents were found in co-treatment groups. Furthermore, several apoptosis pathway related genes such as Bax, p53, caspase-3 and caspase-9 were significantly up-regulated in the PFOS plus ZnO-NPs exposure groups, while anti-apoptotic gene Bcl-2 was significantly down-regulated in the PFOS plus ZnO-NPs exposure groups. In addition, some oxidative stress-related genes such as Cat, GSH peroxidase 1 (Gpx1a) and superoxide dismutase 1 (Sod1) were also significantly down-regulated after the PFOS plus ZnO-NPs co-treatments. Conclusions The results demonstrated that the PFOS plus ZnO-NPs co-exposure could cause more serious oxidative stress and apoptosis than the PFOS and ZnO-NPs exposure alone at the exposure concentrations above. The synergistic effects of the PFOS and ZnO-NPs may be the important mechanisms of their toxicity to zebrafish embryos. Int J Occup Med Environ Health 2017;30(2):213–229
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2017, 30, 2; 213-229
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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