Human Risk on Heavy Metal Pollution and Bioaccumulation Factor in Soil and Some Edible Vegetables around Active Auto-Mechanic Workshop in Chanchaga Minna Niger State, Nigeria

Abstract

Soil samples are an excellent media to monitor the concentration of heavy metal pollution because anthropogenic heavy metals are usually deposited in the soils. Plants planted on a land polluted with engine oil can absorb heavy metals through their roots. These absorbed metals get accumulated in the roots, stems, fruits, buds, grains and leaves of these plants. Heavy metals gradually accumulate in the soil, and its stability will cause accumulation and pollution since they could not be decomposed or are not biodegradable, like other organic pollutants through biological or chemical processes. Leafy vegetables are the major sources of micronutrients (vitamins, mineral elements), antioxidants and other photochemical required for the maintenance of good health and prevention of degenerative diseases. They also contain dietary fibers for bowel movement which helps in the reduction of blood cholesterol levels and may lower the risk of ABSTRACT