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Journal of Advances in Environmental Health Research، جلد ۳، شماره ۲، صفحات ۱۱۱-۰
عنوان فارسی
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عنوان انگلیسی Acute toxicity of titanium dioxide nanoparticles in Daphnia magna and Pontogammarus maeoticus
چکیده انگلیسی مقاله Titanium dioxide nanoparticles (nTiO 2 ) are the world's second most widely consumed nanomaterial and large quantities of this material enters the aquatic ecosystem annually. Therefore, understanding the effects of nTiO 2 on aquatic organisms is very important. The present study used Daphnia magna as a model freshwater organism and Pontogammarus maeoticus as a brackish water organism to evaluate short term toxicity of a well characterized nTiO 2 suspension. According to the results, acute exposure of D. magna and P. maeoticus to nTiO 2 concentrations ranging from 0.1 to 200 mg/l did not cause any mortality; therefore, lethal concentrations could not be calculated (LC > 200 mg/l). Observations showed that the TiO 2 nanoparticles were trapped on the surface of the body, under the carapace, and in the gut of the D. magna . Although the results of the present acute toxicity experiment did not show nTiO 2 to be toxic to the tested aquatic organisms in an environmentally relevant concentration, further studies are needed on the chronic effects of lower concentrations of this nanomaterial in simulated natural ecosystems.
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نویسندگان مقاله سید علی جوهری | seyed ali johari
department of fisheries, school of natural resources, university of kurdistan, sanandaj, iran


صبا اصغری | saba asghari
department of fisheries, school of natural resources, university of kurdistan, sanandaj, iran
نشانی اینترنتی http://jaehr.muk.ac.ir/index.php/jaehr/article/view/195
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article(s)
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