Determination of TiO2 and AgTiO2 Nanoparticles in Artemia salina: Toxicity, Morphological Changes, Uptake and Depuration

Ozkan Y., ALTINOK İ., İLHAN H., Sokmen M.

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, cilt.96, sa.1, ss.36-42, 2016 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 96 Sayı: 1
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1007/s00128-015-1634-1
  • Dergi Adı: BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.36-42
  • Anahtar Kelimeler: AgTiO2, TiO2 nanoparticles, Nanotoxicology, Aquatic crustaceans acute toxicity, TITANIUM-DIOXIDE NANOPARTICLES
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

In this study, aquatic stability and toxic effects of TiO2 and AgTiO2 nanoparticles (NPs) were investigated on Artemia salina nauplii. AgTiO2 was found to be more toxic to nauplii compared to TiO2. The mortality rate in nauplii increased significantly with increasing concentrations and duration of exposure. TiO2 eliminations ranged between 27.8 % and 96.5 % at 50 and 1 mg/L TiO2 exposed to nauplii, respectively. Accumulation and elimination of Ag in AgTiO2 exposed nauplii were similar except at 1 mg/L AgTiO2. When NPs were mixed with water, the hydrodynamic dimensions of NPs significantly increased because of aggregation in saltwater but NP size decreased over time. NPs-exposed nauplii showed changes in eye formation, enlargement of the intestine, malformations in the outer shell and antennae loss were also observed. Since accumulation and toxicity of AgTiO2 NPs was higher than TiO2 alone, inevitably release of AgTiO2 into aqueous environments can cause ecological risks.