Vertical transport and plant uptake of nanoparticles in a soil mesocosm experiment

Journal of Nanobiotechnology

Research

Janine Moll¹  Florian Klingenfuss¹  Marcel van der Heijden¹  Thomas D. Bucheli¹  Alexander Gogos²  Micah J. Green³  Fahmida Irin⁴  Renato Zenobi⁵ 

[1] Agroscope, Institute for Sustainability Sciences ISS, 8046, Zurich, Switzerland;Agroscope, Institute for Sustainability Sciences ISS, 8046, Zurich, Switzerland;Department of Chemistry and Applied Biosciences, ETH Zurich, 8093, Zurich, Switzerland;Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, USA;Department of Chemical Engineering, Texas Tech University, Lubbock, TX, USA;Department of Chemistry and Applied Biosciences, ETH Zurich, 8093, Zurich, Switzerland;

关键词: Nanomaterials;    Black carbon;    Soil leachate;    Multi-angle light scattering;    Microwave induced heating;    Wheat;    Red clover;   

DOI  :  10.1186/s12951-016-0191-z

 received in 2016-01-21, accepted in 2016-05-06,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundAgricultural soils represent a potential sink for increasing amounts of different nanomaterials that nowadays inevitably enter the environment. Knowledge on the relation between their actual exposure concentrations and biological effects on crops and symbiotic organisms is therefore of high importance. In this part of a joint companion study, we describe the vertical translocation as well as plant uptake of three different titanium dioxide (nano-)particles (TiO2 NPs) and multi-walled carbon nanotubes (MWCNTs) within a pot experiment with homogenously spiked natural agricultural soil and two plant species (red clover and wheat).ResultsTiO2 NPs exhibited limited mobility from soil to leachates and did not induce significant titanium uptake into both plant species, although average concentrations were doubled from 4 to 8 mg/kg Ti at the highest exposures. While the mobility of MWCNTs in soil was limited as well, microwave-induced heating suggested MWCNT-plant uptake independent of the exposure concentration.ConclusionsQuantification of actual exposure concentrations with a series of analytical methods confirmed nominal ones in soil mesocosms with red clover and wheat and pointed to low mobility and limited plant uptake of titanium dioxide nanoparticles and carbon nanotubes.

【 授权许可】

CC BY   
© The Author(s). 2016