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Effect of soil sorption and aquatic natural organic matter on the antibacterial activity of a fullerene water suspension
Author(s) -
Li Dong,
Lyon Delina Y.,
Li Qilin,
Alvarez Pedro J. J.
Publication year - 2008
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1897/07-548.1
Subject(s) - sorption , environmental chemistry , dissolved organic carbon , chemistry , bioavailability , organic matter , aquatic ecosystem , adsorption , natural organic matter , soil water , suspension (topology) , humic acid , soil organic matter , environmental science , organic chemistry , soil science , biology , bioinformatics , fertilizer , mathematics , homotopy , pure mathematics
The present study investigated the association of a C 60 water suspension (nC 60 ) with natural organic matter, present as a soil constituent or dissolved in the water column, and its effect on the antibacterial activity of nC 60 . Sorption of nC 60 to soil reduced its bioavailability and antibacterial activity, and the sorption capacity strongly depended on the organic content of the soil. Adsorption of aquatic dissolved humic substances onto nC 60 and possible subsequent reactions also were found to eliminate nC 60 toxicity at humic acid concentrations as low as 0.05 mg/L. These findings indicate that natural organic matter in the environment can mitigate significantly the potential impacts of nC 60 on microbial activities that are important to ecosystem health.