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厦门市同安区是肝癌高发区 ,1987～ 1989年肝癌标化死亡率为 40～ 45 /10万。为弄清同安居民饮用水藻类毒素污染与肝癌高发关系 ,1998年 8月对同安饮用水及水源环境样本藻类及微囊藻毒素污染进行了调查。采用ELISA法检测微囊藻毒素 ,显微镜镜检进行藻类计数、分类。结果表明 6 3份水样微囊藻毒素阳性率 77 5 % ,最高检出值 6 95 5ng/L ,浅井水藻毒素中位值 12 1 2ng/L ,远高于国内其它地区 ,同安水及水周围环境中均检出藻类 ,主要藻种有蓝藻门、绿藻门和硅藻门 ,优势藻为颤藻 ,系已知产毒蓝藻之一。比较同安相对肝癌高发与低发村井水中藻毒素含量 ,低发村井水藻毒素含量明显低于高发村。提示同安居民饮用水广泛受到微囊藻毒素污染 ,与同安肝癌高发可能有某种联系。
Tongan District, Xiamen City is a high incidence of liver cancer, 1987 ~ 1989 liver cancer standardized mortality rate of 40 to 45 / 100,000. To understand Tongan residents drinking water algae toxin contamination and high incidence of liver cancer, in August 1998 Tongan drinking water and water environmental samples of algae and microcystin contamination were investigated. The microcystin was detected by ELISA and the algae were counted by microscopic examination. The results showed that the positive rate of 6 3 microcystins in water samples was 77.5%, with the highest detection value of 6 95 5 ng / L and the median of algae toxins in wells 12 12 ng / L, which was much higher than that of other domestic areas, Tong’an water and water Algae were detected in the surrounding environment, the main algal species are Cyanophyta, Chlorophyta and Bacillariophyta, the dominant algae is Oscillatoria, Department of known to produce poisonous cyanobacteria. Compared with Tongan, the content of algal toxins in village well water with high incidence and low incidence of liver cancer was significantly lower than that in Gaofa village. Tip Tongan residents drinking water is widely contaminated by microcystin, and Tongan high incidence of liver cancer may have some connection.