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40日令SD品系大鼠长期喂养氚水。实验结果证明:大鼠的寿命随饮水中氚水放射性强度的增加显著缩短。高剂量组肿瘤发生率显著增加(73.3％),其中恶性肿瘤占肿瘤总数的77％。低剂量组肿瘤发生率也显著增加(79.3％),其中恶性肿瘤占肿瘤总数的79％。两个剂量组恶性肿瘤的比例是78％。可见氚水有显著地诱发肿瘤和致癌效应。本文中根据肿瘤的总数统计了氚水诱发肿瘤的危险度。
40-day SD rats were fed tritiated water for a long time. Experimental results show that: the life expectancy of rats with tritium water in drinking water increased the intensity of radiation was significantly shortened. High-dose group of tumor incidence increased significantly (73.3%), of which malignant tumors accounted for 77% of the total number of tumors. Low-dose group also significantly increased the incidence of tumors (79.3%), of which malignant tumors accounted for 79% of the total number of tumors. The proportion of malignant tumors in the two dose groups was 78%. Tritiated water can be seen significantly induced tumor and carcinogenic effects. Tritiated water-induced tumor risk was calculated in this paper based on the total number of tumors.