同安水环境藻类及藻类毒素分布调查
Study of Distribution of Algal toxin and Algal Species in Tong an Environment
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摘要: 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63份水样微囊藻毒素阳性率77.5%,最高检出值695.5ng/L,浅井水藻毒素中位值121.2ng/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.Abstract: To study the special relationship between blue-green algae toxin contamination drinking water and primary hepatocellar carcinoma(Hcc)in Tong-An district of Amoi.63 different types of drinking water sample were collected in august 1998.Application of ELISA method to detect the microcystins concentration.Counting and category by microscope.The results showed that shallow well water existed microcystins(MC)contamination in Tong-An distract.The MC positive rate was 77.5%.The highest concentration of MC was 695.5ng/L.The median concentration of MC was 121.2ng/L.It is hig her than other areas in our country.The dominant specie of blue-green algae in Tong-An environment is oscillator which has been confirmed to product the microcystins. Comparing to the MC of drinking water samples in high and low HCC mortality villages.The MC contents were significantly higher in village of high HCC mortality than that of low mortality.
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