Absorption of semiconductor nanocrystals by the aquatic invertebrate Ceriodaphnia dubia.
Bull Environ Contam Toxicol
; 81(3): 249-52, 2008 Sep.
Article
em En
| MEDLINE
| ID: mdl-18626563
ABSTRACT
When incubated with nanomolar concentrations of fluorescent semiconductor nanocrystals in moderately hard water the fluorescence of living Ceriodaphnia dubia increased. Average pixel intensity of exposed animals was greater than that of unexposed animals and increased in a dose and exposure time-dependent-manner. Internal structures were clearly visible in exposed and unexposed animals but fluorescence was most intense in the region of the abdominal appendages of exposed animals. Since these nanoparticles contain significant quantities of the toxic metals cadmium and selenium, their accumulation from aquatic environments by this standard test organism has significant implications about their potential environmental toxicity.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes da Água
/
Cladocera
/
Pontos Quânticos
Limite:
Animals
Idioma:
En
Revista:
Bull Environ Contam Toxicol
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Estados Unidos