Study on the Single Toxicity of Five Azole Fungicides for Green Algae

Azole fungicides are widely used to control diseases and insect pests of vegetables, fruits flowers because their good antibacterial effect regulating plant growth. However, extensive use inevitably enters the water environment with rainfall surface runoff, which leads potential harm aquatic organisms. At present, research on biological toxicity azole mainly focuses single compounds, such as Paclobutrazol, hexaconazole, propiconazole Difenoconazole. systematic study toxic effects multi-component mixtures is still very lacking, it unable accurately assess ecological risk. Therefore, in this paper, five common (imidazole, tebuconazole, triadimefon, tricyclazole hymexazol) were taken target pollutants. Scenedesmus obliquus was indicator. The mixture system designed by equal concentration ratio method linear average ray method. Study 96h interaction under combined stress fungicides. main results follows:The 96 h test typical determined microplate analysis Fitting Weibull function taking EC50 criterion,the show that order tested was:tebuconazole > Triadimefon oxacillin Tricyclazole imidazole.