Investigation the quality of tomato grown in a soil treated with iron slag and its effect on human health

Soil pollution with heavy metals can decrease Fe availability in human food chain in industrial regions. This research was done to investigation the quality of tomato grown in a soil treated with iron slag and its effect on human health. This research was done in 2016 in a greenhouse experiment in Arak province with 72 pots including: applying 0, 15 and 30 t ha-1 cow manure enriched with 0 and 10% (W/W) iron sludge in a Pb polluted soil (0, 600, 800 and 1000 mg Pb kg-1 soil). At the end of experiment, fruit Fe concentration was measured and Fe daily intake for 4 to 50 years group was calculated. Consumption of 80 g tomato which cultivated in soil treated with 30 t ha-1 enriched cow manure with iron slag can supply 18.4% Fe daily requirement for the children in the range 4 to 8 years. With increasing the Pb soil pollution up to 1000 mg/kg soil, only 12.1% Fe requirement was supplied in this age group. The results of this experiment showed that applying enriched cow manure with iron slag has affect on increasing Fe requirement from tomato consumption. However, tomato cultivation in Pb polluted soil can decrease fruit Fe concentration and thereby, decrease the human Fe intake.