Fiuoroquinalone Antibiotics and Cadmium Mobilities in Soil Environments

Location

CSU 253/4/5

Start Date

23-4-2007 1:00 PM

End Date

23-4-2007 3:00 PM

Student's Major

Chemistry and Geology

Student's College

Science, Engineering and Technology

Mentor's Name

Trent Vorlicek

Mentor's Department

Chemistry and Geology

Mentor's College

Science, Engineering and Technology

Description

Human and livestock wastes are often applied to agricultural fields as fertilizers. These wastes may contain up to mg-kg"^ concentrations of antibiotics and potentially toxic metals (e.g., Cd, Pb, Zn, Cu, Ni). The impact of these components on public health requires a thorough knowledge of their fate and transport in soil systems. Several common antibiotics, including the fluoroquinolone and quinolone classes, are known to readily complex divalent metals commonly leached from human and animal wastes. These interactions may affect the mobility of metals by influencing the partitioning between metals in aqueous and sorbed phases. The common clay minerals, illite and kaolinite were chosen for comparison in this study because of their abundance in soil systems and difference in cation exchange capacities. Test slurries were prepared to study the uptake of several metals (e.g., Cd, Pb, Cu) in the presence and absence of varying concentrations of antibiotics (e.g., ciprofloxacin, norfloxacin, oxolinic acid, nalidixic acid) at near groundwater pH and constant ionic strength using a p-nitrophenol buffer. Preliminary data indicates Cd readily adsorbs to both illite and kaolinite in the presence of antibiotics. Research including the addition of variable concentrations of antibiotics to Cd containing slurries is ongoing.

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Apr 23rd, 1:00 PM Apr 23rd, 3:00 PM

Fiuoroquinalone Antibiotics and Cadmium Mobilities in Soil Environments

CSU 253/4/5

Human and livestock wastes are often applied to agricultural fields as fertilizers. These wastes may contain up to mg-kg"^ concentrations of antibiotics and potentially toxic metals (e.g., Cd, Pb, Zn, Cu, Ni). The impact of these components on public health requires a thorough knowledge of their fate and transport in soil systems. Several common antibiotics, including the fluoroquinolone and quinolone classes, are known to readily complex divalent metals commonly leached from human and animal wastes. These interactions may affect the mobility of metals by influencing the partitioning between metals in aqueous and sorbed phases. The common clay minerals, illite and kaolinite were chosen for comparison in this study because of their abundance in soil systems and difference in cation exchange capacities. Test slurries were prepared to study the uptake of several metals (e.g., Cd, Pb, Cu) in the presence and absence of varying concentrations of antibiotics (e.g., ciprofloxacin, norfloxacin, oxolinic acid, nalidixic acid) at near groundwater pH and constant ionic strength using a p-nitrophenol buffer. Preliminary data indicates Cd readily adsorbs to both illite and kaolinite in the presence of antibiotics. Research including the addition of variable concentrations of antibiotics to Cd containing slurries is ongoing.

Recommended Citation

Danberry, Aaron L.. "Fiuoroquinalone Antibiotics and Cadmium Mobilities in Soil Environments." Undergraduate Research Symposium, Mankato, MN, April 23, 2007.
https://cornerstone.lib.mnsu.edu/urs/2007/poster-session-B/2