The extensive use of silver nanoparticles (SNPs) as antimicrobial in food, clothing and medicine, leadsinevitably to a loss of such nanomaterial in soil and water. Little is known about the effects of soilcontamination, in particular, on microbial cells, which play a fundamental ecological role. In this work, the impact of SNPs on forest soil has been studied, investigating eco-physiological indicators of microbial biomass and microbial diversity with culture-dependent and independent techniques. Moreover, SNPs bioavailability and uptake were assessed. Soil samples were spiked with SNPs at two different concentrations (10 and 100 µgg−1 dw) and incubated with the relative controls for 30, 60 and 90 days. The overall parameters showed a significant influence of the SNPs on the soil microbial community, revealing a marked shift after 60 days of incubation.
Bioavailability and biological effect of engineered silver nanoparticles in a forest soilS / Serena Carbone; Livia Vittori Antisari; Francesca Gaggia; Loredana Baffoni; Diana Di Gioia; Gilmo Vianello; Paolo Nannipieri. - In: JOURNAL OF HAZARDOUS MATERIALS. - ISSN 0304-3894. - STAMPA. - 280:(2014), pp. 89-96. [10.1016/j.jhazmat.2014.07.055]
Bioavailability and biological effect of engineered silver nanoparticles in a forest soilS
NANNIPIERI, PAOLO
2014
Abstract
The extensive use of silver nanoparticles (SNPs) as antimicrobial in food, clothing and medicine, leadsinevitably to a loss of such nanomaterial in soil and water. Little is known about the effects of soilcontamination, in particular, on microbial cells, which play a fundamental ecological role. In this work, the impact of SNPs on forest soil has been studied, investigating eco-physiological indicators of microbial biomass and microbial diversity with culture-dependent and independent techniques. Moreover, SNPs bioavailability and uptake were assessed. Soil samples were spiked with SNPs at two different concentrations (10 and 100 µgg−1 dw) and incubated with the relative controls for 30, 60 and 90 days. The overall parameters showed a significant influence of the SNPs on the soil microbial community, revealing a marked shift after 60 days of incubation.File | Dimensione | Formato | |
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