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本文采用蚕豆根尖细胞微核（ＭＣＮ）、耗氧量（ＣＯＤ）对胃癌高、低发区饮用水水质进行监测，结果表明高发区地表水两项指标均明显高于地下水，也高于低发区地表水（Ｐ＜０．０５）。大型自来水厂的出厂水的诱变活性明显低于水源水（Ｐ＜０．０５），不同饮用水的ＣＯＤ、ＭＣＮ与胃癌死亡率有较好的一致性，提示饮水污染可能是致胃癌高发的因素之一。
In this paper, the use of Vicia faba root tip cell micronucleus (MCN) and oxygen consumption (COD) to monitor the drinking water quality of high and low incidence areas of gastric cancer, the results show that the surface water in the high incidence area are significantly higher than the groundwater, but also higher than the low Surface water in the area of origin (P<0.05). The mutagenic activity of the water from the large waterworks was significantly lower than that of the source water (P<0.05). There was a good agreement between the COD and MCN of different drinking water and the mortality rate of gastric cancer, suggesting that drinking water pollution may be the cause of high incidence of gastric cancer. One of the factors.