scholarly journals Cancer risk assessment and modeling of groundwater contamination near industrial estate, Lahore, Pakistan

2021 ◽  
Vol 11 (2) ◽  
pp. 314-326
Author(s):  
Muhammad Irfan Jalees ◽  
Muhammad Umar Farooq ◽  
Asma Tufail Shah
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Drinking Water ◽  
Cancer Risk ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Pearson Correlation ◽  
Oxygen Demand ◽  
Cancer Risk Assessment ◽  
Industrial Estate

Abstract More than 60% of the population of Pakistan has no access to safe drinking water. Industrial zones near populated areas make conditions more severe due to continuous contamination. The aim of this study was to use statistical tools for correlation and source identification and health risk assessment of contamination due to Sundar Industrial Estate (SIE), Lahore, Pakistan. Drinking and wastewater samples were collected from SIE and analyzed for physical, chemical, microbial, and heavy metals analysis. Results showed that heavy metals and microbial contamination were beyond the National Drinking Water Quality Standards of Pakistan while high values of chemical oxygen demand (COD) and biochemical oxygen demand (BOD) wastewater were responsible for contamination of drinking water through seepage. There was a medium to strong correlation among parameters of all samples as indicated by Pearson correlation and analysis of variance. Principal component analysis and cluster analysis indicated sources of contamination, i.e., refuse leachate and untreated effluent discharges as main source of pollutants for drinking water. Health risk assessment showed a high intake of heavy metals through drinking water. Hazard quotient and hazard index indicated high probability of non-carcinogenic risk while cancer risk assessment suggested that out of every 100 of the population 93 people may suffer carcinogenic effects.

scholarly journals Human Health Risk Assessment of Heavy Metals in Onion Bulbs Cultivated in Katsina State, North West Nigeria

2020 ◽  
pp. 30-39
Author(s):  
A.I. Yaradua ◽  
A. J. Alhassan ◽  
A. Nasir ◽  
S. S. Matazu ◽  
A. Usman ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Cancer Risk ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Human Health Risk ◽  
Hazard Index ◽  
The United States ◽  
Potential Health ◽  
North West

Vegetable fields in Katsina State are increasingly being loaded with heavy metals through various pollution sources such as agricultural activities mining and traffic. Onion bulb samples from the three senatorial zones that constitute to make up Katsina state in the North West of Nigeria were collected and the concentrations of seven heavy metals (Pb, Cd, Cr, Fe, Zn, Mn and Ni) in all the samples were determined by atomic absorption spectrometry. The health risk assessment methods developed by the United States Environmental Protection Agency (US EPA) were employed to explore the potential health hazards of heavy metals in the samples on the children and adult population. The highest mean concentration (mg/kg) was observed for Fe, followed by Pb, Zn and Mn. While Cd has the lowest concentration with the heavy metals Cr and Ni being below detection level (BDL). Overall hazard index (Hi) for the heavy metals were within the safety limit. The overall cancer risk to the adults based on pseudo-total metal concentrations exceeded the target value, mainly contributed by Pb.  Mn and Zn were the primary heavy metals posing non-cancer risks while Pb caused the greatest cancer risk. It was concluded that consumption of the onion samples from Katsina State may contribute to the population cancer burden.

scholarly journals Health Risk Assessment of Household Drinking Water in a District in the UAE

Water ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1726 ◽  
Author(s):  
Mohammed Mahmoud ◽  
Mohamed Hamouda ◽  
Ruwaya Al Kendi ◽  
Mohamed Mohamed
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Risk Assessment ◽  
Drinking Water ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Quality Data ◽  
Water Tank ◽  
Water Quality Data ◽  
Sampling Points

The quality of household drinking water in a community of 30 houses in a district in Abu Dhabi, United Arab Emirates (UAE) was assessed over a period of one year (January to November 2015). Standard analytical techniques were used to screen for water quality parameters and contaminants of concern. Water quality was evaluated in the 30 households at four sampling points: kitchen faucet, bathroom faucet, household water tank, and main water pipe. The sampling points were chosen to help identify the source when an elevated level of a particular contaminant is observed. Water quality data was interpreted by utilizing two main techniques: spatial variation analysis and multivariate statistical techniques. Initial analysis showed that many households had As, Cd, and Pb concentrations that were higher than the maximum allowable level set by UAE drinking water standards. In addition, the water main samples had the highest concentration of the heavy metals compared to other sampling points. Health risk assessment results indicated that approximately 30%, 55%, and 15% of the houses studied had a high, moderate, and low risk from the prolonged exposure to heavy metals, respectively. The analysis can help with planning a spatially focused sampling plan to confirm the study findings and set an appropriate course of action.

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

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.

Spatial analysis and health risk assessment of heavy metals concentration in drinking water resources

2017 ◽  
Vol 24 (32) ◽  
pp. 24790-24802 ◽  
Author(s):  
Reza Ali Fallahzadeh ◽  
Mohammad Taghi Ghaneian ◽  
Mohammad Miri ◽  
Mohamad Mehdi Dashti
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Drinking Water ◽  
Spatial Analysis ◽  
Water Resources ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Drinking Water Resources

Determination and health risk assessment of heavy metals in drinking water of Tunceli, Turkey

2015 ◽  
Vol 42 (4) ◽  
pp. 508-516 ◽  
Author(s):  
V. Demir ◽  
T. Dere ◽  
S. Ergin ◽  
Y. Cakır ◽  
F. Celik
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Drinking Water ◽  
Health Risk ◽  
Health Risk Assessment
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