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http://dx.doi.org/10.4491/KSEE.2017.39.11.634

Study on ZnO Nanoparticle Dispersions in Test Media Including Natural Organic Matter for Ecotoxicological Assessment  

Park, Sun-Young (Risk Assessment Division, National Institute of Environmental Research (NIER))
Kim, Kyung-tae (Risk Assessment Division, National Institute of Environmental Research (NIER))
Shin, Yu-jin (Risk Assessment Division, National Institute of Environmental Research (NIER))
Kim, Ji-eun (Risk Assessment Division, National Institute of Environmental Research (NIER))
Lee, Jae-woo (Risk Assessment Division, National Institute of Environmental Research (NIER))
Jo, Eunhye (Risk Assessment Division, National Institute of Environmental Research (NIER))
Sung, Hwa kyung (Risk Assessment Division, National Institute of Environmental Research (NIER))
Kim, Pil-je (Risk Assessment Division, National Institute of Environmental Research (NIER))
Choi, Kyung-hee (Risk Assessment Division, National Institute of Environmental Research (NIER))
Eom, Ig-chun (Risk Assessment Division, National Institute of Environmental Research (NIER))
Publication Information
Journal of Korean Society of Environmental Engineers / v.39, no.11, 2017 , pp. 634-640 More about this Journal
Abstract
Toxicity and fate assessment is necessary in the evaluation of the environmental, health and safety risks of engineered nanomaaterials (ENMs). Therefore, in order to ensure the reproducibility, reliability and relevance of ENMs toxicity results, stable and monomodal dispersion protocols in toxicity test media are needed. Zinc oxide nanoparticles (nZnO) are widely used in various products such as cosmetic products, paper, paints etc. In this study, nZnO dispersions in ecotoxicity test media were produced by following a series of steps of modified National Institute of Standards and Technology (NIST) Special publication 1200-5. In addition, natural organic matter (humic acid (HA)) was used as a stabilizing agent to disperse nZnO in the test media. The hydrodynamic diameters (HDD) of the nZnO in dispersion ranged between 150 and 200 nm according to the dynamic light scattering (DLS) measurement. Based on these dispersions in ecotoxicity test using ecological species (Oryzias latipes, Daphnia magna, Pseudokirchneriella subcapitata and Chironomusus riparius), dispersion protocol was found to have a considerable potential in ecotoxicity test of ENMs.
Keywords
Zinc Oxide Nanoparticles (nZnO); Ecotoxicity; Nanoecotoxity Test Media;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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