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Type: Journal article
Title: Fate of radiolabeled C₆₀ fullerenes in aged soils
Other Titles: Fate of radiolabeled C(60) fullerenes in aged soils
Author: Navarro, D.
Kookana, R.
McLaughlin, M.
Kirby, J.
Citation: Environmental Pollution, 2017; 221:293-300
Publisher: Elsevier
Issue Date: 2017
ISSN: 0269-7491
Statement of
Divina A. Navarro, Rai S. Kookana, Mike J. McLaughlin, Jason K. Kirby
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.
Keywords: Fullerenes; carbon nanoparticles; soil; partitioning; transformation
Rights: Crown Copyright © 2016 Published by Elsevier Ltd. All rights reserved.
DOI: 10.1016/j.envpol.2016.11.077
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Appears in Collections:Agriculture, Food and Wine publications
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