Mutagenic Properties of Pesticides. Kimberly Champine. Pesticide Usage.
Pesticide use by farmers in southeast Missouri provides many opportunities for pesticide contamination of ground water. The ideal outcome of pesticide use occurs when it accomplishes its purpose then breaks down into harmless components such as CO2 and H2O. The breakdown of various pesticide chemicals varies with time and can be affected by factors such as persistence, formulation or soil characteristics.
Groundwater is the water that that lies below the soil surface and fills the pore spaces in and around rock, sand, gravel and other materials. Groundwater moves through water saturated zones called aquifers. The upper level of the aquifer is the water table and fluctuates throughout the year. Contamination occurs when unwanted substances move into the saturated zone.
Spread 0.05 ml (1 drop) of mutant strain of Salmonella to the surface of Minimal Media without Histidine
Revertant bacterial growth around a disc impregnated with contaminated ground water could indicate possible carcinogenic affects in human beings. The more colonies observed, the higher degree of health risk in the water sample.