The paper described the geochemical characteristics of radon and its harm,and with years of civil engineering of indoor environment pollutant based on the measured data,discusseing the indoor environment of radon in harm,should adopt the sources and protective measures.%文章介绍了氡的地球化学性质及危害,并以几年来对大量民用建筑工程室内环境污染物实测资料为依据,论述了室内环境中氡的危害、来源及应采取的防护措施。
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