Objective To study the mutagenicity of the water in Ncity.
Methods XAD 2 resin was used to extract the organic atter in water.Ames test, the micronucleus assay and the sperm morphologic test were used to analyze the utagenicity of the nonvolatile org anic copounds(NOCs)in water, for the main waterwor ks sour ce water, the clarified filtration waterand the chlouinated tap water in Ncity.
Results The chlouinated tap water micronucleus rate and seed defor mity rate were sig nificantly higher than those in normal group(P < 0.5).When the chlouinated tap water dosage was 5 L/plate, TA98 S9 MR=4.92, TA98+S9 MR=2.69.
Conclusion Mutagenicity was determined by the chlorinated tap water in some degree, but mutagenicity was not found in the source waterand the clar ifying fillration water.
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