钍作业人员尿钍含量、摄入量及内照射剂量蒋德松龚怀宇赵强严勇在钍的开放性工作场所中，钍能通过呼吸道、胃肠道、皮肤及伤口进入机体内，对人体形成内照射。而接触高含量钍及其化合物时，不仅有内照射，而且还有外照射危害。因此，开展钍作业场所及职业人员的放射卫生监... Thorium workers Urinary Thorium content, intake and internal dose Jiang Desong Gong Huaiyu Zhao Qiang Yan Yong thorium in the open workplace, thorium through the respiratory tract, gastrointestinal tract, skin and wound into the body, the formation of internal exposure to the human body. And contact with high levels of thorium and its compounds, not only internal irradiation, but also the harm of external radiation. Therefore, to carry out thorium workplace and occupational health supervision ...