Degradation and Microbial Uptake of C60 Fullerols in Contrasting Agricultural Soils
| Autor: | Ronald F. Turco, Marianne Bischoff Gray, Timothy R. Filley, Timothy D. Berry, Andrea Clavijo |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
biology
Chemistry 04 agricultural and veterinary sciences General Chemistry Mineralization (soil science) 010501 environmental sciences biology.organism_classification complex mixtures 01 natural sciences Agronomy Environmental chemistry Soil water 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental Chemistry Microcosm Carbon nanomaterials Bacteria 0105 earth and related environmental sciences |
| Zdroj: | Environmental Science & Technology. 51:1387-1394 |
| ISSN: | 1520-5851 0013-936X |
| Popis: | The environmental fate of functionalized carbon nanomaterials (CNM) remains poorly understood. Using 13C-labeled nanomaterial we present the results of a study investigating the mineralization and microbial uptake of surface-functionalized C60 (fullerols) in agricultural soils with contrasting properties. Soil microcosms rapidly mineralized fullerol C, as determined by 13C-content in the respired CO2, with higher fullerol mineralization in an organic, clay-rich soil versus a silty, low C soil (∼56.3% vs ∼30.9% fullerol C mineralized over 65 days). By tracking the enriched 13C from fullerol into microbial phospholipid fatty acids (PLFA) we also report, for the first time, the incorporation of nanomaterial-derived C into soil microbial biomass, primarily by fungi and Gram-negative bacteria. While more fullerol C was incorporated into PLFA in the organic C-rich soil (0.77% vs 0.19% of PLFA C), this soil incorporated fullerol C into biomass less efficiently than the silty, low C soil (0.13% and 0.84% of assim... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|