关键词: 盐藻, 联合毒性, 卤代物

Abstract: BACKGROUND ＆ AIM: According to the standard methods of the Organization for Economic Co-operation and Development (OECD) for algal growth inhibition test, the combined-toxicitiy test of three kinds of halid-mixtures to Dunaliella salina was conducted. MATERIAL AND METHODS: Four groups of the tests were set by combining any two of CHCl3, CCl4, CHBr3 and all the three compounds, another group was a control. Concentrations were set according to the National drinking water health standard (GB5749-1985) and D. salina was cultivated in these groups. Cell counting was conducted after 48 h. RESULTS: The EC50 of each group was obtained, and the combined-toxicity's addition-indexes (AI) of the groups were all among －0.1～0.1, which indicated that the toxicity of these compounds to D.salina was additive effect. CONCLUSION: As a tested organism, D. salina has a wide applied potential in the area of toxicology.

Key words: Dunaliella salina, combined toxicity, halids