目的分析实验室真菌气溶胶分布特征,为生物实验室工作人员提供预警资料。方法采用6级An-derson空气采样器,马铃薯葡萄糖琼脂(PDA)培养基分别在真菌实验室,普通实验室进行采样。结果真菌实验室的优势菌株为黑曲霉、岛青霉和黄曲霉,分别高于平均浓度195,60和20 CFU/m3;普通实验室的优势菌株为青霉,含量高达67.4%。真菌实验室、普通实验室气溶胶浓度分别为813和304 CFU/m3,计数中值直径(count median dianeter,CMD)分别为2.76和3.66μm,粒子均可直接进入肺泡,而且能直接进入肺泡的真菌粒子浓度是普通实验室的3.1倍。结论真菌实验室真菌浓度远高于普通实验室,已被真菌污染,而普通实验室真菌浓度较低,CMD值与居室接近,因此,拥有较好的空气质量。
[Objective] The aim of this study is to quantitatively analyze the Fusarium concentration and distribution in air and the surrounding substrates(feed,feces,dust,soil)in the chicken house to provide a scientific basis for the control and early warning of Fusarium infection in poultry and practitioners.[Method]Air samples collected by a 6-stage Anderson air microorganism sampler and exposed culture plates as well as substrate samples gathered by aseptic bags were cultured,counted and purified in the lab.[Result]717 strains of Fusarium isolates were obtained and the dust had the highest Fusarium concentration among the samples(2.8×105-1.5×106 CFU/g with an average of 8.8×105 CFU/g).[Conclusion]The Fusarium distribution in the air was in high correlation with those in soil and dust.
