目的 :研究五氧化二钒、四氯化钛二种化合物在环境中共存时对机体可能存在的遗传损伤。方法 :用枯草杆菌DNA重组试验 ,通过抑菌线变化判断该化合物是否有影响。结果 :单纯四氯化钛表现为阴性 ,单纯五氧化二钒组为阳性 ,混合物表现为五氧化二钒单独的诱变性。结论 :五氧化二钒、四氯化钛在枯草杆菌DNA重组修复试验中的联合致突变性表现为独立作用。 Objective: To study the possible genetic damage to the body of two compounds of vanadium pentoxide and titanium tetrachloride when they coexist in the environment. Methods: Bacillus subtilis DNA recombinant test, through the inhibition of changes in the line to determine whether the compound has an impact. Results: Pure titanium tetrachloride was negative, pure vanadium pentoxide group was positive, and the mixture showed single mutagenicity of vanadium pentoxide. CONCLUSION: The combined mutagenicity of vanadium pentoxide and titanium tetrachloride in Bacillus subtilis DNA recombinant repair experiment shows independent effect.