Radioactivity survey and risk assessment study for drinking water in capital city Ankara, Turkey.

Autor: Kapdan, Enis, Altinsoy, Nesrin, Taskın, Halim, Karahan, Gürsel
Předmět:
Zdroj: International Journal of Environmental Analytical Chemistry; Dec2024, Vol. 104 Issue 16, p4748-4760, 13p
Abstrakt: In this study, the activity concentrations of gross alpha and gross beta in 125 drinking water samples (16 tap and 109 spring waters) collected from Ankara province were measured using a gas proportional α/β counter. The average (range) activity concentrations of gross alpha and gross beta were determined as 105 (20–495) mBqL−1 and 195 (70–850) mBqL−1, respectively. Average annual effective dose to adults caused by ingestion of water samples was estimated as 74.1 ± 43.2 µSv y−1. The average estimated cancer risk value depending on irradiations was calculated as 3.8 × 10−4 and 2.6 × 10−4 for the region using the nominal probability coefficients recommended by ICRP 60 and ICRP 103, respectively. Annual effective dose values in 10.4% of samples exceeded the limit values suggested by WHO for drinking waters in terms of beta activity and this was 0.8% for alpha activity. Moreover, contribution of 40K to the gross beta activity in drinking waters of the region was determined as 47%. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index