Research On Monitoring And Early Warning Of Biological Technology Of Yuecheng Reservoir

With the development of modern technology, industrial and agricultural wastewater quantity is increasing year by year, especially this year of sudden water pollution accidents occur frequently, causing serious damage to water, a direct threat to human health and social stability. Therefore, protection of water security is very important.Biological monitoring method is a sensitive, rapid method of early warning. Can timely and accurately in the pollutants on the water before the threat has indication function. In this paper, with zebrafish as the experimental organism, the test method of acute toxicity, the toxicity effects of heavy metal ions and organic compounds studied.Research shows that, the zebrafish for heavy metal ions 96 h median lethal concentration of LC50, Hg2+: 19.790 ug/L; Pb2+: 1.98 mg/L; Cd2+: 2.158 mg/L; As3+: 15.084mg/L;Cr6+:19.394mg/L,metalion toxicity size: Hg2+> Pb2+> Cd2+> As3+>Cr6+.Z ebrafish to organic pollutants 96 h median lethal concentration LC50 for chlorobenzene : 9.31 mg/L;phenol:25.161mg/L;xylene:32.25mg/L; aniline 44.145mg/L; toluene:70.95mg/L; benzene:126.86mg/L. The toxicity of organic pollutants: chlorobenzene> phenol> xylene>aniline> toluene> benzene.According to the fish toxicity grading criteria, Hg2+ grade high toxicity, Pb2+、Cd2+ for high toxicity,Cr6+、As3+ poisoning. High toxicity of chlorobenzene;Phenol, toluene, xylene,aniline poisoning;Benzenelow is low toxicity. Various organic pollutants has the dose effect relationship of zebra and mortality. The phenomenon of heavy metal ions and organic compounds on zebrafish toxicity obviously. Zebrafish by heavy metal ion effects, from static and orderly state to the vigorous walk, finally the body imbalance, floating. Organic pollutants on zebrafish has very strong anesthetic effect, make zebrafish swimming imbalance, rollover floating etc..