Analysis and Health Risk Assessment of Heavy Metals and Radioactivity in Seed Kernel of Xanthoceras sorbifolium in Tongliao City
Objective:In order to strengthen the food safety supervision and promote the sustainable development of Wenguan fruit industry,the heavy metal content of Wenguan fruit kernel was determined,the radioactivity level of Wenguan fruit kernel was analyzed and the specific activity of radionuclide was measured.Method:The contents of heavy metals Cu,Cr,Mn,Pb and Zn were measured by AAS6810 flame atomic absorption spectrophotometer.The specific activity of radionuclides 238U,226Ra,232Th,40K and 137Cs were determined by ultra-low background and high purity germanium gamma spectrometer.The specific activity of total α and total β was measured by HY3324 four-channel low background α、β measuring instrument,and the annual effective dose caused by dietary intake was estimated and the health risk was assessed.Result:The contents of heavy metals Cu,Cr,Mn,Pb and Zn were 0.160 mg·kg-1,0 mg·kg-1,0.026 mg·kg-1,0.018 mg·kg-1 and 0.733 mg·kg-1,respectively.The specific activities of 238U,226Ra,232Th,40K and 137Cs were-2.45 Bq·kg-1,-0.91 Bq·kg-1,-0.71 Bq·kg-1,133.56 Bq·kg-1,0.016 Bq·kg-1,respectively.The specific activity of total α and total β were 0 Bq·kg-1 and 223 Bq·kg-1.Conclusion:The contents of Cu,Cr,Mn,Pb and Zn in the seeds were lower than the national food safety standard and food safety risk monitoring data,and the target hazard quotients and harm index of adults and children were far less than 1,which would not cause health risks to human body.The specific activity of 238U,226Ra,232Th,40K and 137Cs was much lower than the national standard.The estimated annual effective dose of different nuclides caused by dietary intake of residents was 3.78×10-6 Sv,which was lower than the average annual dose of internal exposure caused by public ingestion in the world.The specific activity of total α and total β is within the normal range and can be safely consumed.
Wenguan fruit kernelheavy metalradionuclideannual effective doserisk assessment
万方数据
维普
