In Katanga, the diversity of metallurgical processes has led to contamination of the environment by trace metals (TM). An essay was set for the purpose of determining the level of TM contents in the water of the river Lubumbashi, the ground on which families make crops and plants produced on it to assess the risk of contamination of the food chain.
Soil samples were collected at the study site, sieved, homogenized and made of a composite left in the pots. The 2x3 factorial designs with 6 repetitions, 36 treatments were installed. The "soil" factor 2 variants: T0, T1, and "plant species" factor has 3 levels (cabbage, spinach, and amaranth).
The results showed very high levels, Cu [1200], Co [1600], Mn [1200] ppm in soils of the Lubumbashi's river, they are superior to the standard NFU 44-041 in force France. These high levels of TM ground T1 have led a deleterious effect on plant growth involving their dead. The irrigation water provided an additional TM soil of about 0.00063 mg/L Cu, 0.000225 Co, Fe 796.5, 504 Mn, Cd and 0.513 0 36 Pb, which is important inputs.
Contamination of the food chain through the consumption of vegetables grown on this soil is evident and real. The use of effective technologies bioremediation of contaminated soils is important to reduce the risk of food poisoning in humans.