Long-Term Effects of Silver Nanoparticles  (Nm-300k) and Soil Amendments on the Soil Community in a Semi-Field Experiment

28 Pages Posted: 14 Mar 2022

See all articles by Xin Zhang

Xin Zhang

affiliation not provided to SSRN

Moira S. McKee

affiliation not provided to SSRN

Juliane Filser

affiliation not provided to SSRN

Abstract

Toxicity of silver nanoparticles (AgNP) has been intensely studied due to a rise in applications in various products. However, most studies were conducted under laboratory conditions and were typically short-term. Here we focus on how AgNP behave under semi-field conditions in a long-term study, which lasted for 600 days. The aim of this study was to determine the effect of AgNP (NM-300K) and AgNO 3  in three soil treatments (RefeSol, biochar and compost) on soil respiration, soil mesofauna and the reproduction of F. candida . To our knowledge, this is the first long-term study on effects of AgNP on a soil community under semi-natural conditions. Additionally, we compared F. candida  reproduction in freshly spiked RefeSol with RefeSol aged in the field. The presence AgNP and AgNO 3  at a concentration of 30 mg kg -1  soil resulted in significant time dependent inhibition of soil microbial biomass and F. candida  reproduction in RefeSol. Soil mesofauna abundance was only temporarily reduced by AgNO 3 . No significant effect of AgNP and AgNO 3  on any of the measured parameters were detected by the end of the experiment. Biochar and compost, as soil amendment, demonstrated excellent soil remediation capabilities for AgNP both short and long-term.

Keywords: Silver nanoparticles, biochar, compost, long-term effects, Collembola, field experiment

Suggested Citation

Zhang, Xin and McKee, Moira S. and Filser, Juliane, Long-Term Effects of Silver Nanoparticles  (Nm-300k) and Soil Amendments on the Soil Community in a Semi-Field Experiment. Available at SSRN: https://ssrn.com/abstract=4057196 or http://dx.doi.org/10.2139/ssrn.4057196

Xin Zhang

affiliation not provided to SSRN ( email )

No Address Available

Moira S. McKee

affiliation not provided to SSRN ( email )

No Address Available

Juliane Filser (Contact Author)

affiliation not provided to SSRN ( email )

No Address Available

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