Mahaffey J A, Parkhurst M A, James A C, Cross F T, Alavanja M C, Boice J D, Ezrine S, Henderson P, Brownson R C
Pacific Northwest Laboratories, Richland, WA 99352.
Health Phys. 1993 Apr;64(4):381-91. doi: 10.1097/00004032-199304000-00005.
CR-39 plastic was attached to household glass objects to learn whether residual radioactivity from radon decay products could be measured and correlated with cumulative radon exposures over defined time periods. Such an approach could be used to increase the completeness of exposure data collected in epidemiologic studies of residential radon. Inability to estimate radon concentrations for all residences adversely effects statistical power and thus the ability to detect an effect of radon exposure on lung cancer risk. A feasibility study was performed to determine if affixing CR-39 surface monitors to selected glass, ceramic, or enameled objects provided comparable estimates of past residential radon exposure to those obtained from year-long ambient alpha track-etch measurements. The CR-39 measurements of alpha activity in the surface of selected objects correlated with ambient radon measurements (R2 = 0.48) provided that reliable information was obtained on the history and age of the objects. This technique has now been incorporated into an epidemiologic study of radon and lung cancer to more fully estimate past exposure to indoor radon.
将CR - 39塑料附着在家庭玻璃制品上，以了解是否能够测量氡衰变产物的残余放射性，并将其与特定时间段内的累积氡暴露量相关联。这种方法可用于提高在住宅氡的流行病学研究中收集的暴露数据的完整性。无法估计所有住宅的氡浓度会对统计效力产生不利影响，进而影响检测氡暴露对肺癌风险影响的能力。开展了一项可行性研究，以确定将CR - 39表面监测器附着在选定的玻璃、陶瓷或搪瓷制品上，是否能提供与通过长达一年的环境α径迹蚀刻测量获得的过去住宅氡暴露量相当的估计值。只要获得了有关物品历史和使用年限的可靠信息，选定物品表面的α活性的CR - 39测量值就与环境氡测量值相关（R² = 0.48）。现在，这项技术已被纳入一项氡与肺癌的流行病学研究中，以更全面地估计过去对室内氡的暴露情况。
