| Autor: |
Baumerte, A, Šakale, G, Putna, I, Balode, M, Knite, M |
| Jazyk: |
angličtina |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
Riga Technical University 53rd International Scientific Conference: Dedicated to the 150th Anniversary and the 1st Congress of World Engineers and Riga Polytechnical Institute / RTU Alumni: Digest |
| Popis: |
Nanomaterial is a material with at least one dimension in the size range from approximately 1 nm to 100 nm with (https://cdb.iso.org/) properties differing greatly from those of bulk substances. Nanoparticles surface area and tendency to aggregate increase with decrease of their dimension. In recent years, development of new manufactured nanomaterials and their multiple applications have boosted their toxicity research. Carbon nanomaterials (CNM) have low dispersibility in water, however, surface modification and organic substances, including natural organic matter, increase their dispersibility and affect CNM fate in environment [1]. Studies suggest that CNM can cause cell and organ toxicity and lethal effects by various routes of exposure [3]. The greatest susceptibility to CNM has been observed for crustaceans and algae with toxic endpoints at 0.25 mg L-1 for fullerene and 8.7 for multi-walled carbon nanotubes (MWCNT) [7]. Biotests with Daphnia magna (48h, freshwater, modified ISO standard) and Artemia salina (72h, 15 ppm saltwater) were applied to assess non-modified carbon nanomaterial acute toxicity in an aquatic environment. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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