Study on biological acute toxicity of four common hazardous chemicals to luminescent bacteria in Daya bay

In order to master the sea water quality of Daya bay, the biological toxicity experiment was carried out in Daya bay by using luminescent bacteria method. The luminescent bacteria were also employed to detect the acute toxicity of four kinds of hazardous chemicals by simulating the leakage of hazardous chemicals. Results showed that the inhibition rate of seawater to Photobacteria was less than 30% in July and November, which was a low toxicity risk. The results of acute toxicity text showed that the IC₅₀ of formaldehyde was 6.974 mg / L, the IC₅₀ of methanol was 0.048 mg / L, the IC₅₀ of toluene was 0.002 mg / L, the IC₅₀ of phenol was 43.484 mg / L. Moreover, the results of the acute toxicity showed that the IC₅₀ value of hazardous chemicals was toluene < methanol < formaldehyde < phenol.