成都市大气气溶胶放射性活度浓度与空气质量变化分析

Abstract

Abstract: Radioactive monitoring of atmospheric aerosols in Chengdu was performed using a high-volume continuous sampling method. Six radionuclides (⁷Be, ²²⁸Ra, ¹³⁷Cs, ⁴⁰K,²¹⁰Pb and ¹³¹I) were quantified, and their activity concentrations fell within the background levels. The activity concentrations of ⁴⁰K, ²¹⁰Pb, and ²²⁸Ra exhibit similar trends to those of PM_2.5 and PM₁₀ concentrations, but are opposite to the trend of O₃ concentration. In contrast, ⁷Be demonstrates a negligible correlation with all three atmospheric parameters.This study enhances the foundational dataset on radionuclide concentrations in atmospheric aerosols in Chengdu,providing a scientific basis for the prevention and control of radioactive air pollution in the region.

Key words: aerosol, γ energy spectrum, radionuclide

CLC Number:

X830.3

JIANG Bing, LIU Xin, LUO Maodan, XU Shu, MAO Wanchong, WANG Qian, TANG Hui, ZHANG Hongfan. Analysis of radioactivity concentration in atmospheric aerosols and air quality changes in Chengdu[J].RADIATION PROTECTION, 2026, 46(2): 156-163.

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Analysis of radioactivity concentration in atmospheric aerosols and air quality changes in Chengdu

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