دورية أكاديمية
Toxicity of copper oxide nanoparticle suspensions to aquatic biota
| العنوان: | Toxicity of copper oxide nanoparticle suspensions to aquatic biota |
|---|---|
| المؤلفون: | Manusadžianas, Levonas, Caillet, Celine, Fachetti, Louis, Gylytė, Brigita, Grigutytė, Reda, Jurkonienė, Sigita, Karitonas, Rolandas, Sadauskas, Kazys, Thomas, Fabien, Vitkus, Rimantas, Férard, Jean-François |
| المصدر: | Environmental toxicology and chemistry, 2012, Vol. 31, iss. 1, p. 108-114 ; ISSN 0730-7268 |
| سنة النشر: | 2012 |
| المجموعة: | LSRC VL (Lithuanian Social Research Centre Virtual Library) / LSTC VB (Lietuvos socialinių tyrimų centras virtualią biblioteką) |
| مصطلحات موضوعية: | CuO nanoparticle ecotoxicity, Nitellopsis obtusa, Thamnocephalus platyurus, Brachionus calyciflorus, LuminoTox assay |
| الوصف: | Toxicity effects induced by nanosuspensions of CuO (<50 nm; Sigma-Aldrich) on macrophytic algae cells of Nitellopsis obtusa (96-h median lethal concentration [LC50]), microphytic algae Chlorella (30-min median inhibitory concentration [IC50]), shrimp Thamnocephalus platyurus (24-h LC50), and rotifer Brachionus calyciflorus (24-h LC50) were investigated. No substantial differences between the effects of nonsonicated and sonicated nCuO suspensions were observed. The particle size distribution analysis accomplished by the laser diffraction technique at suspension concentration from 3 to 100 mg/L revealed rapid (within 5 min) reagglomeration of the particles after the sonication. The observed adverse effects on N. obtusa cells may be attributed to nanoparticles per se, but not to ionic Cu, because neither chemical analysis nor biological testing (algae survival in the supernatants of suspensions) confirmed the presence of cupric ions in toxic amounts. Contrary to ionic Cu form, nCuO delayed the initial phase of N. obtusa cell membrane depolarization. Lethality tests with rewash demonstrated that the least used 5-min exposure in 100 mg/L nCuO sonicated suspension induced 70% mortality in charophyte cells after 8 d, whereas the rewash after a short exposure to a noticeably toxic concentration of Cu2þ prevented cell mortality. The obtained data suggested the possible influence of a thick charophyte cell wall on the dynamics of nanotoxicity effects. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | http://lmavb.lvb.lt/LMAVB:ELABAPDB5927509&prefLang=en_USTest |
| الإتاحة: | https://doi.org/10.1002/etc.715Test http://lmavb.lvb.lt/LMAVB:ELABAPDB5927509&prefLang=en_USTest |
| رقم الانضمام: | edsbas.817D1564 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |