中国部分城市饮用水中氡的含量

Contents of radon in drinking waterin 49 cities of China.

作者报道了中国４９个城市饮用水中氡的浓度，其范围值为０．２３～４２．７０ｋＢｑ·ｍ（－３），算术平均值和人口加权平均值分别为９．０４±１１．２１和８．２３±２．４９ｋＢｑ·ｍ（－３）。结果表明，饮用水中氡浓度以西北、华北、东北最高；西南居中；华东、华南最低．亦测定了成都、重庆两市井水中的氡浓度，其算术平均值分别为２４．３０±１２．８３和４９．６４±５４．０５ｋＢｑ·ｍ（－３），最高值为１８１．６０ｋＢｑ·ｍ（－３）。４９个主要城市因水氡所致居民年有效剂量当量人口加权均值为５４．０±１６．７μＳｖ．

A survey of concentrations ofradon in drinking water in 49 citiesof China was conducted and theresults are presented. Concentrationsranged from 0. 23 to 42.70 kBq.m^(-3).The arithmetic mean and weightedmean were 9.04 ±11. 21 and 8. 23 ± 7.49kBq.m^(-3), respectively. The highestconcentrations of radon in drinkingwater were found in the northwestand northeast areas of China, whilethe lowest concentrations in southand east China.