Health risk assessment of heavy metals in soil samples from an abandoned industrial waste dumpsite in Ibadan, Nigeria (original) (raw)

2019, Environmental Monitoring and Assessment

To investigate heavy metal accumulation in soils and evaluate potential health risk through maize consumption, a total of 196 soils and 55 maize samples were collected from Yushu, China, one of the most important maize production bases. The mean contents of Cd, Cr, Cu, Zn and Pb were 0.119±0.08, 56.51±9.10, 19.21±3.42, 70.58±14.57, and 34.42±7.85 mg kg 1 for soils and were 0.014±0.02, 0.68±0.24, 1.33±0.47, 17.15±3.02 and 0.02±0.01 mg kg 1 for maize grains, respectively. The concentrations of Cr, Cu, Zn and Pb in all soil and maize samples did not exceed safety thresholds, but the percentages of Cd content above guideline values of