Journal
ENVIRONMENTAL ENGINEERING RESEARCH
Volume 22, Issue 2, Pages 224-229Publisher
KOREAN SOC ENVIRONMENTAL ENGINEERS
DOI: 10.4491/eer.2016.103
Keywords
Exoenzyme; OECD standard soil; Soil; Zinc oxide nanoparticles
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Funding
- Basic Science Research Program of the National Research Foundation (NRF) of Korea - Ministry of Science, ICT, and Future Planning Department [2016R1A2B3010445]
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Zinc oxide nanoparticles (ZnO NPs) have been used as additives in a variety of consumer products. While these particles may enter the environment, only a limited number of studies have investigated the effects of ZnO NPs on soil exoenzymes. Here, we investigate the long-term effects of ZnO NPs at concentrations of 50 and 500 mg/kg on the activities of six soil exoenzymes in planted soils: Dehydrogenase, fluorescein diacetate (FDA) hydrolase, urease, acid phosphatase, arylsulfatase, and beta-glucosidase. Significant effects were observed at one or more time points for all enzymes except for FDA hydrolase. These effects included both decreases and increases in enzyme activity. Our results suggest that ZnO NP treatments of 50 and 500 mg/kg can adversely affect soil enzymes, particularly acid phosphatase and urease, and thus, these data may have implications for phosphorous and nitrogen cycles in the soil.
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