Marine Sciences Research Center, School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11794-5000, USA.
Health Phys. 2013 Aug;105(2):115-20. doi: 10.1097/HP.0b013e31828459ef.
Iodine-131 (half-life = 8.04 d) is the most widely used radionuclide in medicine for therapeutic purposes. It is excreted by patients and is discharged directly to sewer systems. Despite considerable dilution in waste water and the relatively short half-life of I, it is readily measured in sewage. This work presents I concentrations in sewage sludge from three water pollution control plants (WPCPs) on Long Island, NY. Iodine-131 concentrations ranged from 0.027 ± 0.002 to 148 ± 4 Bq g dry weight. The highest concentrations were measured in the Stony Brook WPCP, a relatively small plant (average flow = 6.8 × 10 L d) serving a regional thyroid cancer treatment facility in Stony Brook, NY. Preliminary radiation dose calculations suggested further evaluation of dose to treatment plant workers in the Stony Brook WPCP based on the recommendations of the Interagency Steering Committee on Radiation Standards.
碘-131（半衰期=8.04 天）是医学治疗中应用最广泛的放射性核素。患者会将其排泄，直接排入污水系统。尽管废水中碘的浓度相当稀释，半衰期也相对较短，但在污水中仍很容易测量到碘。本工作介绍了来自纽约长岛三个污水处理厂（WPCP）的污水污泥中的碘-131 浓度。碘-131 浓度范围为 0.027±0.002 至 148±4 Bq g 干重。在石溪 WPCP 中测量到的浓度最高，该污水处理厂规模较小（平均流量=6.8×10 L d），服务于纽约石溪的一家区域性甲状腺癌治疗机构。初步辐射剂量计算表明，根据辐射标准机构间指导委员会的建议，需要进一步评估石溪 WPCP 中处理厂工人的剂量。
