Abstract
With the ongoing commercialization of nanotechnology products, the increasing use of engineered nanoparticles (NPs) could lead potentially to environmental risks. This study investigated the dynamic influences of three iron-based NPs (Fe0, Fe3O4, and Fe2O3) applied into a red soil (RS) and a Wushan soil (WS) with different application rates (2 to 6 g kg−1) on soil physicochemical properties such as pH, dissolved organic carbon (DOC), available ammonium nitrogen (NH4 +-N), available phosphorus (AP), and enzymatic activities. The results showed that the addition of Fe0 NPs increased DOC and available NH4 +-N, but significantly decreased AP, while Fe3O4 and Fe2O3 NPs slightly reduced soil pH in both soils and significantly declined available NH4 +-N in the WS and AP in the RS. No significant difference was observed between the effects of Fe3O4 and Fe2O3 NPs on soil properties except AP in the RS. All iron-based NPs decreased the activities of urease and acid phosphatase in both soils. The effects on soil physicochemical properties, especially available NH4 +-N and AP induced by iron-based NPs, varied greatly with soil types. These results implied that cautions should be paid for the environmental application of iron-based NPs, especially iron oxide NPs in soils.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Soil and Sediment Contamination: An International Journal
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
