Fate of radiolabeled C60 fullerenes in aged soils.
Environ Pollut
; 221: 293-300, 2017 Feb.
Article
em En
| MEDLINE
| ID: mdl-27955990
ABSTRACT
Fullerenes (e.g. C60, C70, etc.) present in soil may undergo changes in its retention with aging. In this study, the partitioning behavior of (14C)-C60 aged up to 12 weeks was investigated in biosolids-amended soil. Spiked samples were subjected to sequential partitioning using water, methanol, and toluene followed by total combustion of solids; the distribution of 14C across solvents and matrices were used to provide insights on C60 behavior. In most samples, 14C only partitioned in toluene with the remaining (non-extractable) activity detected in the solid phase. In all biosolids-amended soil samples, an increase in non-extractable 14C were observed for those exposed to light (vs dark) with the greatest difference observed in biosolids + sand samples. Possible processes that contribute to the observed 14C distribution, i.e. retention and potential transformation of C60, were discussed. Over-all, results suggest that environmental exposure to C60 and potentially transformed C60 species, as a result of their release from soils, is likely to be low.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
2_ODS3
Base de dados:
MEDLINE
Assunto principal:
Solo
/
Poluentes do Solo
/
Fulerenos
Idioma:
En
Revista:
Environ Pollut
Ano de publicação:
2017
Tipo de documento:
Article