Acute Toxicity Comparison of Single-Walled Carbon Nanotubes in Various Freshwater Organisms

作者:Sohn Eun Kyung; Chung Young Shin; Johari Seyed Ali; Kim Tae Gyu; Kim Jin Kwon; Lee Ji Hyun; Lee Yong Hwa; Kang Sung Wook; Yu Il Je*
来源:Biomed Research International, 2015, 2015: 323090.
DOI:10.1155/2015/323090

摘要

While the commercialization of single-walled carbon nanotubes (SWCNTs) is rapidly expanding, the environmental impact of this nanomaterial is not well understood. Therefore, the present study evaluates the acute aquatic toxicity of SWCNTs towards two freshwater microalgae (Raphidocelis subcapitata and Chlorella vulgaris), a microcrustacean (Daphnia magna), and a fish (Oryzias latipes) based on OECD test guidelines (201, 202, and 203). According to the results, the SWCNTs inhibited the growth of the algae R. subcapitata and C. vulgaris with a median effective concentration (EC50) of 29.99 and 30.96mg/L, respectively, representing "acute category 3" in the Globally Harmonized System (GHS) of classification and labeling of chemicals. Meanwhile, the acute toxicity test using O. latipes and D. magna did not show any mortality/immobilizing effects up to a concentration of 100.00 mg/L SWCNTs, indicating no hazard category in the GHS classification. In conclusion, SWCNTs were found to induce acute ecotoxicity in freshwater microalgae, yet not in D. magna and medaka fish.

  • 出版日期2015