Excess forensic lifetime cancer risk assessment of soils around petroleum product marketing company using gamma ray spectrometry

2021 ◽  
Author(s):  
Festus M. Adebiyi ◽  
Dayo A. Ayeni
Keyword(s):  
Risk Assessment ◽  
Cancer Risk ◽  
Petroleum Product ◽  
Gamma Ray ◽  
Cancer Risk Assessment ◽  
Gamma Ray Spectrometry ◽  
Lifetime Cancer Risk ◽  
Product Marketing

ASSESSMENT OF NATURAL RADIOACTIVITY IN MAIZE AND ESTIMATION OF CONCOMITANT DOSE TO NIGERIAN VIA INGESTION PATHWAY

2019 ◽  
Vol 184 (3-4) ◽  
pp. 359-362
Author(s):  
Mudassir H Yarima ◽  
M U Khandaker ◽  
A Nadhiya ◽  
M A Olatunji
Keyword(s):  
Cancer Risk ◽  
Natural Radioactivity ◽  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Detailed Knowledge ◽  
Dose Limit ◽  
Annual Dose ◽  
Lifetime Cancer Risk ◽  
Environmental Media ◽  
Naturally Occurring

Abstract Uranium, thorium and potassium are the most abundant naturally occurring radioactive materials (NORMs) found in soils and other environmental media including foodstuffs. Since the human exposures to NORMs is an unavoidable phenomenon, in such a way that they can easily find their way to human being via food chain, detailed knowledge on their presence in foodstuffs is necessary to assess the radiation dose to the population. Thus, the present study concerns the assessment of natural radioactivity in maize, a staple foodstuff for Nigerian, via HPGe gamma-ray spectrometry. Activity concentrations (Bq/kg) in the maize samples were found to be in the range of 6.1 ± 0.6–8.2 ± 1.3, 2.2 ± 0.4–5.1 ± 0.7 and 288 ± 16–401 ± 24 for 226Ra, 232Th and 40K, respectively. Measured data for 226Ra and 232Th show below the world average values of 67 Bq/kg and 82 Bq/kg, respectively, while the activity of 40K exceeds the global average of 310 Bq/kg. The annual effective dose via the maize consumption was found to be far below the UNSCEAR recommended ingestion dose limit of 290 μSv/y, and the estimated lifetime cancer risk show lower than the ICRP (1991) cancer risk factor of 2.5 × 10−3 based on the additional annual dose limit of 1 mSv for general public, thus pose no adverse health risk to the Nigerian populace.

scholarly journals Monitoring of chlorination disinfection by-products and their associated health risks in drinking water of Pakistan

2014 ◽  
Vol 13 (1) ◽  
pp. 270-284 ◽  
Author(s):  
Sidra Abbas ◽  
Imran Hashmi ◽  
Muhammad Saif Ur Rehman ◽  
Ishtiaq A. Qazi ◽  
Mohammad A. Awan ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Cancer Risk ◽  
Health Risks ◽  
Prediction Models ◽  
Cancer Risk Assessment ◽  
Average Lifetime ◽  
Lifetime Cancer Risk ◽  
Males And Females ◽  
Exposure Routes ◽  
By Products

This study reports the baseline data of chlorination disinfection by-products such as trihalomethanes (THMs) and their associated health risks in the water distribution network of Islamabad and Rawalpindi, Pakistan. THM monitoring was carried out at 30 different sampling sites across the twin cities for 6 months. The average concentration of total trihalomethanes (TTHMs) and chloroform ranged between 575 and 595 μg/L which exceeded the permissible US (80 μg/L) and EU (100 μg/L) limits. Chloroform was one of the major contributors to the TTHMs concentration (>85%). The occurrence of THMs was found in the following order: chloroform, bromodichloromethane > dibromochloromethane > bromoform. Lifetime cancer risk assessment of THMs for both males and females was carried out using prediction models via different exposure routes (ingestion, inhalation, and dermal). Total lifetime cancer risk assessment for different exposure routes (ingestion, inhalation, and skin) was carried out. The highest cancer risk expected from THMs seems to be from the inhalation route followed by ingestion and dermal contacts. The average lifetime cancer risk for males and females was found to be 0.51 × 10−3 and 1.22 × 10−3, respectively. The expected number of cancer risks per year could reach two to three cases for each city.

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