Uptake kinetics of silver nanoparticles by plant: relative importance of particles and dissolved ions

Nanotoxicology
Fei DangBaoshan Xing

Abstract

Quantifying the relative bioavailability of particles versus ions is a key step toward understanding the mechanisms of bioaccumulation and toxicity of silver nanoparticles (AgNPs). Here we investigated AgNP uptake kinetics by wheat Triticum aestivum L. at different ages (i.e. 15- and 30-day after germination) in hydroponics. The concentration-dependent accumulation of AgNPs under the experimental conditions, in which AgNP dissolution in bulk suspension and at the biological interface was ruled out, confirmed the direct uptake of particles. This was further validated by the detection of Ag-containing particles within plants by single particle inductively coupled plasma mass spectrometry. Plants differentiated particles and dissolved ions, with uptake rate constants of particles and dissolved ions 4.3 ± 0.6 to 5.2 ± 0.6 and 288.6 ± 13.4 to 450.6 ± 63.4 L kg-1 h-1, respectively. Plant age appeared to have a negligible influence on uptake rate constant ratio of particles to ions. As a result, the relative contribution of particulate uptake to overall AgNP accumulation varied as a function of AgNP dissolution in nature. Particulate uptake was dominant when the dissolution was less than 1.2%. These findings help clearing up the incon...Continue Reading

References

May 6, 2005·Environmental Science & Technology·Samuel N Luoma, Philip S Rainbow
Feb 24, 2010·Environmental Science & Technology·Jingyu Liu, Robert H Hurt
Dec 7, 2011·Environmental Science & Technology·Rui MaGregory V Lowry
Jul 7, 2012·Nano Letters·Zong-ming XiuPedro J J Alvarez
Dec 25, 2012·Environmental Science & Technology·Christian O DimkpaAnne J Anderson
Apr 20, 2013·Talanta·Madjid HadiouiKevin J Wilkinson
Nov 14, 2013·Environmental Science & Technology·Ann-Kathrin OstermeyerTyler Radniecki
Dec 11, 2013·Environmental Science & Technology·Simon Leclerc, Kevin J Wilkinson
Jan 23, 2014·Environmental Pollution·Nicole MartineauAnne J Anderson
Jan 31, 2015·Metallomics : Integrated Biometal Science·Franziska SchwabeBernd Nowack
Mar 19, 2015·Environmental Science & Technology·Yinlong XiaoWillie J G M Peijnenburg
May 29, 2015·Environmental Science & Technology·Enrique NavarroRenata Behra
Jun 25, 2015·Environmental Science & Technology·John P StegemeierGregory V Lowry
Sep 1, 2016·Environmental Science & Technology·Danielle E Gorka, Jie Liu
Apr 27, 2017·Environmental Science & Technology·Ana E Pradas Del RealGéraldine Sarret
Jun 7, 2019·Nature Nanotechnology·Melanie KahJason C White

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Citations

Mar 5, 2021·Environmental Toxicology and Chemistry·E LahiveA Green Etxabe
May 18, 2021·Environmental Science & Technology·Xiaoxuan WangXingmao Ma
Jun 24, 2021·Analytical Methods : Advancing Methods and Applications·Eduardo BoleaFrancisco Laborda

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