Kávási N, Vigh T, Sorimachi A, Ishikawa T, Tokonami S, Hosoda M
Research Center for Radiation Protection, National Institute of Radiological Sciences, Inage-ku, Chiba-shi, Japan.
Radiat Prot Dosimetry. 2010 Oct;141(4):432-5. doi: 10.1093/rpd/ncq253. Epub 2010 Sep 27.
In this study, short-term radon (RnDP) and thoron (TnDP) progeny measurements and dose estimation were carried out in winter and summer in a manganese mine, Hungary. Gamma-ray dose rate originating from external sources and (222)Rn and (226)Ra contents of spring-water from a mine was also measured. During working hours RnDP and TnDP concentration values changed between 12.1-175 and 0.14-0.42 Bq m(-3), respectively. The (222)Rn and (226)Ra concentration values in the karst spring-water were ∼6 Bq dm(-3) and 16 mBq dm(-3), respectively. The radiation dose resulting from the consumption of karst spring-water was negligible. The doses from the inhalation of TnDP and external gamma radiation were of the same magnitude, ∼0.1 mSv y(-1), which was rather negligible related to the estimated radiation dose of 5 mSv y(-1) from RnDP.
在本研究中，于匈牙利的一座锰矿中，在冬季和夏季开展了短期氡（RnDP）和钍射气（TnDP）子体测量及剂量估算。还测量了源自外部源的伽马射线剂量率以及该矿泉水中的（222）Rn和（226）Ra含量。在工作时间内，RnDP和TnDP浓度值分别在12.1 - 175和0.14 - 0.42 Bq m(-3)之间变化。喀斯特泉水中的（222）Rn和（226）Ra浓度值分别约为6 Bq dm(-3)和16 mBq dm(-3)。饮用喀斯特泉水所致的辐射剂量可忽略不计。吸入TnDP和外部伽马辐射所致剂量大小相同，约为0.1 mSv y(-1)，与RnDP估计的5 mSv y(-1)辐射剂量相比相当可忽略不计。
