本文初步报道食管癌高发区民用、家制鱼露内含亚硝胺的情况:8种样品中7种阳性,6种能检出二乙基亚硝胺,有的高达6.83ppb。人服用高发区民用鱼露体内代谢尿中的亚硝胺亦有较大改变:眼前:3.16±0.972ppb,服后:5.75±12.72ppb。低剂量的维生素C尚无阻断作用。我们正在进一步寻找阻断的方法,为食管癌高发区提供预防方案。 This article initially reports on the presence of nitrosamines in domestic and homemade fish sauces in high-incidence areas of esophageal cancer: 7 of the 8 samples are positive, 6 of them can detect diethylnitrosamines, and some are as high as 6.83 ppb. The nitrosamines in the urine of people who take the high-producing areas of civilian fish sauces also changed significantly: immediate: 3.16 ± 0.972 ppb, after serving: 5.75 ± 12.72 ppb. Low doses of vitamin C have no blocking effect. We are further looking for ways to block and provide prevention programmes for high-risk areas of esophageal cancer.