Effects of graphene oxides on soil enzyme activity and microbial biomass

Haegeun Chung, Min Ji Kim, Kwanyoung Ko, Jae Hyeuk Kim, Hyun ah Kwon, Inpyo Hong, Nari Park, Seung Wook Lee, Woong Kim

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Due to recent developments in nanotechnology, nanomaterials (NMs) such as graphene oxide (GO) may enter the soil environment with mostly unknown consequences. We investigated the effects of GO on soil microbial activity in a 59-day soil incubation study. For this, high-purity GO was prepared and characterized. Soils were treated with up to 1mgGOg-1 soil, and the changes in the activities of 1,4-β-glucosidase, cellobiohydrolase, xylosidase, 1,4-β-N-acetyl glucosaminidase, and phosphatase and microbial biomass were determined. 0.5-1mg GOg-1 soil lowered the activity of xylosidase, 1,4-β-N-acetyl glucosaminidase, and phosphatase by up to 50% when compared to that in the control soils up to 21days of incubation. Microbial biomass in soils treated with GO was not significantly different from that in control soils throughout the incubation period, and the soil enzyme activity and microbial biomass were not significantly correlated in this study. Our results indicate that soil enzyme activity can be lowered by the entry of GO into soils in short term but it can be recovered afterwards.

Original languageEnglish
Pages (from-to)307-313
Number of pages7
JournalScience of the Total Environment
Volume514
DOIs
Publication statusPublished - 2015 May 1

Keywords

  • Extracellular enzymes
  • Microbial biomass
  • Nanomaterial
  • Soil incubation
  • Soil microorganisms

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Waste Management and Disposal
  • Environmental Engineering

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  • Cite this

    Chung, H., Kim, M. J., Ko, K., Kim, J. H., Kwon, H. A., Hong, I., Park, N., Lee, S. W., & Kim, W. (2015). Effects of graphene oxides on soil enzyme activity and microbial biomass. Science of the Total Environment, 514, 307-313. https://doi.org/10.1016/j.scitotenv.2015.01.077