Study on Standards for Drinking Water Quality
Research on the formulation and revision of radiological parameters in the “Standards for Drinking Water Quality(GB5749-2022)” in China
Ji Yanqin, Zhang Lan, Sun Quanfu
Published 2023-06-06
Cite as Chin J Prev Med, 2023, 57(6): 826-830. DOI: 10.3760/cma.j.cn112150-20221028-01044
Abstract
The radioactive safety of drinking water has attracted increasing public concern. The newly issued Standards for Drinking Water Quality (GB5749-2022) in China has revised the radiological parameters. This article provides an overview of the main sources, levels of radionuclides in drinking water, and summarized the individual doses criterion and adverse health effects associated with exposure of the public to radionuclides from drinking-water. It analyzes and discusses the relevant revision content of radiological parameters, including the guidance values for screening gross α and gross β, subtracting the contribution of potassium-40 from gross β activity when the gross β activity concentration exceeds the screening level, and the basis for establishing the limit values of reference indices uranium and radium-226. Specific implementation and evaluation suggestions are also proposed.
Key words:
Radioactivity; Gross alpha; Gross beta; Uranium; Radium 226; Drinking water
Contributor Information
Ji Yanqin
China CDC Key Laboratory of Radiological Protection and Nuclear Emergency/National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China
Zhang Lan
China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
Sun Quanfu
China CDC Key Laboratory of Radiological Protection and Nuclear Emergency/National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China