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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Ouriques, Luciane Cristina Matias, William Gerson Melegari, Silvia Pedroso Rossetto, Ana Letícia de O. F. |
| Description | Country affiliation: Brazil Author Affiliation: Rossetto AL ( Laboratório de Toxicologia Ambiental, LABTOX, Departamento de Engenharia Sanitária e Ambiental, Universidade Federal de Santa Catarina, Campus Universitário, CEP: 88040-970 Florianópolis, SC, Brazil.); Melegari SP ( Laboratório de Toxicologia Ambiental, LABTOX, Departamento de Engenharia Sanitária e Ambiental, Universidade Federal de Santa Catarina, Campus Universitário, CEP: 88040-970 Florianópolis, SC, Brazil.); Ouriques LC ( Laboratório de Biologia Celular Vegetal, Departamento de Biologia Celular, Embriologia e Genética, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, 88049-900, CP 476 Florianópolis, SC, Brazil.); Matias WG ( Laboratório de Toxicologia Ambiental, LABTOX, Departamento de Engenharia Sanitária e Ambiental, Universidade Federal de Santa Catarina, Campus Universitário, CEP: 88040-970 Florianópolis, SC, Brazil. Electronic address: william.g.matias@ufsc.br.) |
| Abstract | Copper oxide (CuO) has various applications, as highlighted by the incorporation of this compound as a biocide of antifouling paints for coating ships and offshore oil platforms. The objective of this study was to evaluate and compare the aquatic toxicity of CuO nanoparticles (NPs) and microparticles (MPs) through acute and chronic toxicity tests with the freshwater microcrustacean Daphnia magna and an acute toxicity test with the bioluminescent marine bacteria Vibrio fischeri. Acute toxicity results for D. magna in tests with CuO NPs (EC50, 48 h=22 mg L(-1)) were ten times higher than those for tests with CuO MPs (EC50, 48 h=223.6 mg L(-1)). In both periods of exposure of V. fischeri, the CuO NPs (EC50, 15m 248±56.39 - equivalent to 12.40%; EC50, 30 m 257.6±30.8 mg L(-1) - equivalent to 12.88%) were more toxic than the CuO MPs (EC50, 15m 2404.6±277.4 - equivalent to 60.10%; EC50, 30 m 1472.9±244.7 mg L(-1) - equivalent to 36.82%). In chronic toxicity tests, both forms of CuO showed significant effects (p<0.05) on the growth and reproduction parameters of the D. magna relative to the control. Additionally, morphological changes, such as lack of apical spine development and malformed carapaces in D. magna, were observed for organisms after the chronic test. The toxicity results demonstrate that CuO NPs have a higher level of toxicity than CuO MPs, emphasizing the need for comparative toxicological studies to correctly classify these two forms of CuO with identical CAS registration numbers. |
| ISSN | 00489697 |
| Volume Number | 490 |
| e-ISSN | 18791026 |
| Journal | Science of The Total Environment |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-08-15 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Copper Toxicity Nanoparticles Toxicity Tests Water Pollutants, Chemical Aliivibrio Fischeri Animals Daphnia Comparative Study Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Waste Management and Disposal Pollution Environmental Engineering |
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