Study of Distribution of Algal toxin and Algal Species in Tong an Environment

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.