Detection of Microcystin in Source and Tap Water from Waterworks Around a Lake in a Year

Objective To learn the content of Microcystin (MC)in source and tap water from waterwor ks around a lake in a nearly year.Methods Water samples were collected from seven water works in April,August,November and next Januar yrespectively.MC was detected by enzyme-linked immunosorbent assay (ELISA).Results MC was determined in the source water from all water works,and the concentrations ranged from 54 to 1 865ng/L.The content of MC in source water was higher in August than other months.In SY waterwor ks,the concentration of MC source water was above 50ng/L throug hout the year.Low concentrations of MC(from 92 to 132ng/L)were also detected in the tap water from DG,JZ water works.Conclusion The MC pollution in source water was mainly in Summer and MC could be completely removed by adding bleaching powder treatment.