Artículo
Polyaniline nanofibers: Acute toxicity and teratogenic effect on Rhinella arenarum embryos
Yslas, Edith Inés
; Ibarra, Luis Exequiel
; Peralta, Damian Oscar
; Barbero, César Alfredo
; Rivarola, Viviana
; Bertuzzi, Mabel Lucia
Fecha de publicación:
03/2012
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Chemosphere
ISSN:
0045-6535
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The fate and effect of nanomaterials in the environment is of paramount importance towards the technological application of the materials. This work shows the ecotoxicological potential of polyaniline (PANI) nanofibers in the larvae Rhinella arenarum by means of AMPHITOX test. Acute toxicity of PANI nanofibers towards embryos of the common South American toad R. arenarum (Anura: bufonidae) was evaluated in the premetamorphosis (stage 25) larvae. The exposure of R. arenarum larvae to at dose of 150, 250 and 400mgL-1 resulted in 100% viability within 96h exposure. The embryos at 2-4 blastomers stage (early life stage teratogenic test) revealed that embryos were not killed and no teratogenic effects were observed when embryos were incubated with PANI nanofibers (150 and 250mgL-1), while only a growth retardation of embryos was induced at levels of 250mg PANI nanofibersL-1. On the other hand, at 400mgL-1 concentration, a reduction in the body length of larvae and tail malformation was observed. This results suggest that a concentration-dependent toxicity is operative, typified by phenotypes that had abnormal body axes. The presence of PANI nanofibers in gut contents and its excretion by larval stages of R. arenarum was confirmed by UV-visible spectroscopy.
Palabras clave:
AMPHITOX
,
ECOTOXICOLOGY
,
NANOFIBERS
,
NANOMATERIALS
,
TOXICITY TEST
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Identificadores
Colecciones
Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
Yslas, Edith Inés; Ibarra, Luis Exequiel; Peralta, Damian Oscar; Barbero, César Alfredo; Rivarola, Viviana; et al.; Polyaniline nanofibers: Acute toxicity and teratogenic effect on Rhinella arenarum embryos; Pergamon-Elsevier Science Ltd; Chemosphere; 87; 11; 3-2012; 1374-1380
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