Health risk assessment of cadmium and lead in a certain county with multi-path ways from 2018 to 2022
Objective To evaluate the health risks of cadmium and lead in air fine particulate(PM2.5),drinking water,and soil of a certain county.Methods The monitoring data of cadmium and lead in the air PM2.5,drinking water,and soil of a certain county from 2018 to 2022 were collected.The environmental health risk assessment model was applied to evaluate both carcinogenic risk and chronic non-carcinogenic risk caused by median concentration of cadmium and lead.The proportion of different exposure routes and the change of results in different years were analyzed.Results The carcinogenic risk values were 8.02×10-7 for cadmium,and 2.50×10-7 for lead,which were less than 1× 10-6 and at an acceptable level.The chronic non-carcinogenic risk values were 6.95×10-2 for cadmium,and 1.09×10-2 for lead.The hazard coefficients were less than 1 and had no significant harm.The comparison of carcinogenic risks through different pathways showed that cadmium and lead had the highest proportion of PM2.5 inhalation in the air.The comparison of chronic non-carcinogenic risks through different pathways showed that cadmium had the highest propor-tion of inhalation pathways in air PM2.5,while lead had the highest proportion of oral intake pathways in water.The car-cinogenic and chronic non-carcinogenic risks of cadmium and lead were both lower in 2022 than in 2018.Conclusion From 2018 to 2022,the chronic non-carcinogenic risks and carcinogenic risks of cadmium and lead were at an accepta-ble level in the county.The proportion of PM2.5 inhalation route was the highest in the comparison of health risk of dif-ferent routes,so the monitoring and pollution management of PM2.5 should be strengthened.
NETL
NSTL
万方数据
