Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30663
Impact of Gold and Silver Nanoparticles on Terrestrial Flora and Microorganisms

Authors: L. Steponavičiūtė, L. Steponavičienė


Despite the rapid nanotechnology progress and recognition, its potential impact in ecosystems and health of humans is still not fully known. In this paper, the study of ecotoxicological dangers of nanomaterials is presented. By chemical reduction method, silver (AgNPs) and gold (AuNPs) nanoparticles were synthesized, characterized and used in experiments to examine their impact on microorganisms (Escherichia coli, Staphylococcus aureus and Candida albicans) and terrestrial flora (Phaseolus vulgaris and Lepidium sativum). The results collected during experiments with terrestrial flora show tendentious growth stimulations caused by gold nanoparticles. In contrast to these results, silver nanoparticle solutions inhibited growth of beans and garden cress, compared to control samples. The results obtained from experiments with microorganisms show similarities with ones collected from experiments with terrestrial plants. Samples treated with AuNPs of size 13 nm showed stimulation in the growth of the colonies compared with 3,5 nm size nanoparticles.

Keywords: Nanomaterials, Ecosystems, Nanoparticles, Ecotoxicology

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1062


[1] S. Horikoshi, N. Serpone, “Introduction to Nanoparticles (Book style)”, in Microwaves in Nanoparticle Synthesis, 1nd ed., 2013, pp. 1–7.
[2] T. M. Allen, “Ligand-targeted therapeutics in anticancer therapy” in Nature Reviews Cancer, 2002, pp. 750-763.
[3] The Royal Society & The Royal Academy of Engineering., Nanoscience and nanotechnologies: opportunities and uncertainties. Cardif: Clyvedon Press, 2004, pp 35-38.
[4] J. Turkevich, P. C. Stevenson, J. A. Hiller, “A study of the nucleation and growth processes in the synthesis of colloidal gold” Discussions of the Faraday Society, 1951, pp 55-75.
[5] G. Frens, “Particle size and sol stability in metal colloids” Colloid & Polymer Science, 1972, pp 736-7741.
[6] J. Rothe, J. Hormes, H, Boonnemann, W. Brijoux, K. Siepen, In situ X-ray absorption spectroscopy investigation during formation of colloidal copper. Journal of the American Chemical Society, 1998, pp 736-741.
[7] M. U. Rashid , Md. K. H. Bhuiyan, M. E. Quayum, Synthesis of Silver Nano Particles (Ag-NPs) and their uses for Quantitative Analysis of Vitamin C Tablets, 2013, pp 23-33.
[8] C. Buzea, I. I. Pacheco Blandino, K. Robbie, “Nanomaterials and nanoparticles: sources ad toxicity (Book style),” Biointerphases, vol. 2, issue 4, 2007, pp MR17-MR172.
[9] Z. Xiu, Q. Zhang, H. L. Puppala, V. L. Colvin, P. J. J. Alvarez, “Negligible particle-specific antibacterial activity of silver nanoparticles” in Nano Letters, 2012, pp. 4271-4275.
[10] H. Sies, Oxidative stress: oxidants and antioxidants, Exp Physiol, 1997, pp 291-295.
[11] P. Mulvaney, Langmuir, 1996, 12, pp. 788-800.
[12] J. R. Morones, J. L. Elechiguerra, A, Camacho, K. Holt, J. B. Kouri, J. T. Ramirez, M. J. Yacaman, “The bactericidal of silver nanoparticles” in Nanotechnology, 2005, pp. 2346-2353.
[13] S. Pal, Y. K. Tak, J. M. Song, Appl. Environ. Microbiol., 2007, 27, pp. 1712-1720.
[14] C. Baker, A. Pradhan, L. Pakstis, D. J. Pochan, S. I Shah, J. Nano. Sci. Nanotechnol, 2005, 5, pp. 244.
[15] B. J. Alloway, Heavy metals in soil. Trace metals and metalloids in soils and their bioavailability (Book style). Springer Science+Business Media Dordrecht, 3rd ed., 2010, pp. 141-161, 195-211.