Assessment of Silver Nanoparticle Biosorption Onto Soil Nematodes
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
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.