Evaluation of seasonal variation of heavy metal contamination and health risk assessment in Sabore field Adamawa State, Nigeria

Objective This study was performed to evaluate the state of heavy metal contamination in soil and vegetables and assess the health risk of inhabitants in the mine-affected area and area far from the mine (reference area) in Daye, China. Methods The heavy metal concentrations in soil and vegetable samples were detected by inductively coupled plasma mass spectrometry. Residents’ exposure parameters were obtained through a questionnaire survey. A health risk assessment model recommended by the United States Environmental Protection Agency was used to evaluate the residents’ risk of oral exposure. Results The copper, lead, cadmium, and arsenic concentrations in soil and in vegetables were higher in the mine-affected area than in the reference area. The health risk of residents in the reference area was within the acceptable range (hazard index < 1, carcinogen risk < 10−4). In the contaminated area, however, the mean hazard index was 2.25 for children and 3.00 for adults, and the mean carcinogen risk was 4.749 × 10−4 for children and 0.587 × 10−4 for adults. Conclusions Potential health risks exist for inhabitants near the mine area. Cadmium and arsenic should be paid more attention as risk sources.

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Exposure to heavy metal contamination and probabilistic health risk assessment using Monte Carlo simulation: a study in the Southeast Iran

Journal of Environmental Health Science and Engineering ◽

10.1007/s40201-020-00539-z ◽

2020 ◽

Vol 18 (2) ◽

pp. 1217-1226

Author(s):

Babak Djahed ◽

Majid Kermani ◽

Mahdi Farzadkia ◽

Mahmoud Taghavi ◽

Samira Norzaee

Keyword(s):

Risk Assessment ◽

Heavy Metal ◽

Monte Carlo Simulation ◽

Monte Carlo ◽

Health Risk ◽

Health Risk Assessment ◽

Metal Contamination ◽

Heavy Metal Contamination

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Heavy Metal Contamination in Oryza sativa L. at the Eastern Region of Malaysia and Its Risk Assessment

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph19020739 ◽

2022 ◽

Vol 19 (2) ◽

pp. 739

Author(s):

Nur Syahirah Zulkafflee ◽

Nurul Adillah Mohd Redzuan ◽

Sara Nematbakhsh ◽

Jinap Selamat ◽

Mohd Razi Ismail ◽

...

Keyword(s):

Heavy Metals ◽

Risk Assessment ◽

Heavy Metal ◽

Cancer Risk ◽

Health Risk ◽

Health Risk Assessment ◽

Metal Contamination ◽

Heavy Metal Contamination ◽

Anthropogenic Sources ◽

Acceptable Limit

Paddy plants tend to accumulate heavy metals from both natural and anthropogenic sources, and this poses adverse risks to human health. The objective of this study was to investigate heavy metal contamination in paddy plants in Kelantan, Malaysia, and its health risk assessment. The bioaccumulation of heavy metals was studied by means of enrichment (EF) and translocation factors (TF). The health risk assessment was performed based on USEPA guidelines. The EF for heavy metals in the studied areas was in the descending order of Cu > As > Cr > Cd > Pb. Meanwhile, Cr and Pb exhibited higher TF values from stem to grain compared with the others. The combined hazard index (HI) resulting from five heavy metals exceeded the acceptable limit (HI >1). The lifetime cancer risk, in both adult and children, was beyond the acceptable limit (10−4) and mainly resulted from exposure. The total cancer risk (CRt) due to simultaneous exposures to multiple carcinogenic elements also exceeded 10−4. In conclusion, intake of heavy metal through rice ingestion is likely to cause both non-carcinogenic and carcinogenic health risks. Further research is required to investigate the extent of heavy metal contamination in agricultural soils and, moreover, to establish human exposure as a result of rice consumption.

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