Event Title

Assessment of Silver Nanoparticle Biosorption Onto Soil Nematodes

Major

Environmental Sciences

Faculty Mentor

Allison R. VandeVoort

Abstract

Metallic nanoparticles are becoming increasingly popular in everyday product applications due to their antibacterial properties; however, there is growing concern, as with all new technologies, regarding their human and environmental safety over time. Metallic nanoparticles have an affinity for solid surfaces, such as soils and sediments, but possible consequences to natural systems remain largely unknown. Silver, both ionic and zero-valent, is known to be antibacterial and, when nano-sized, exhibits unique physiochemical properties that may further disrupt biotic systems. The purpose of this research was to analyze biosorption of nanosilver (AgNP) onto soil nematodes extracted from Salamander Springs, a permaculture farm in Jones County, GA. Soil samples were submerged and incubated in solutions of either 0, 1, 10, or 100 mg/L AgNP solutions for 48h using the Baermann funneling method. Nematode motility was observed and mortality rates were quantified and compared between extractions containing only tap water and those containing AgNPs. Silver accumulations on extracted nematodes were also measured to evaluate biosorption.

Session Name:

Poster Presentation Session #2 - Poster #12

Start Date

10-4-2015 12:15 PM

End Date

10-4-2015 1:00 PM

Location

HSB 3rd Floor Student Commons

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Apr 10th, 12:15 PM Apr 10th, 1:00 PM

Assessment of Silver Nanoparticle Biosorption Onto Soil Nematodes

HSB 3rd Floor Student Commons

Metallic nanoparticles are becoming increasingly popular in everyday product applications due to their antibacterial properties; however, there is growing concern, as with all new technologies, regarding their human and environmental safety over time. Metallic nanoparticles have an affinity for solid surfaces, such as soils and sediments, but possible consequences to natural systems remain largely unknown. Silver, both ionic and zero-valent, is known to be antibacterial and, when nano-sized, exhibits unique physiochemical properties that may further disrupt biotic systems. The purpose of this research was to analyze biosorption of nanosilver (AgNP) onto soil nematodes extracted from Salamander Springs, a permaculture farm in Jones County, GA. Soil samples were submerged and incubated in solutions of either 0, 1, 10, or 100 mg/L AgNP solutions for 48h using the Baermann funneling method. Nematode motility was observed and mortality rates were quantified and compared between extractions containing only tap water and those containing AgNPs. Silver accumulations on extracted nematodes were also measured to evaluate biosorption.