Abstract
Soil heavy metal contamination is a worldwide environmental concern that presents considerable risks to ecosystems, agricultural progress, and human health. This study aims to evaluate the potential environmental and health hazards linked to the presence of arsenic (As), lead (Pb), nickel (Ni), zinc (Zn), and iron (Fe) in agricultural soil in Al Majma’ah governorate, Saudi Arabia. The contamination factor (CF), pollutant load index (PLI), chronic daily intake (CDI), hazard index (HI), and total lifetime cancer risk (LCR) were calculated for 34 soil samples. The results from the CF and PLI analysis demonstrate that the examined soil has a low contamination factor and is free from heavy metal pollution. The average CDI values for adults and children exhibited the following descending order: Fe > Zn > Cu > Pb > As. The highest HI values observed in adults ranged from 0.0375 (Fe) to 0.00019 (Zn), but in children, the range was from 0.3497 (Fe) to 0.0018 (Zn). The hazard index values for heavy metal(loid)s (HMs) in the Al Majma’ah area were all below 1.0, suggesting that residents in the area are not exposed to a significant non-carcinogenic risk. The LCR values ranged from 8.37E−06 to 7.80E-05 for As in both adults and children, and from 7.50E−08 to 6.98E-07 for Pb. The findings indicated a level of risk that was deemed acceptable or tolerable, without any significant adverse health effects
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