山西省东南部羊舍气载真菌浓度变化及空气动力学特征

doi:10.16431/j.cnki.1671-7236.2018.07.038

Abstract

Abstract:

In order to provide the basis for the environmental control of sheep houses,the variation of airborne fungal concentration and the aerodynamic characteristics of fungal aerosols were researched in the Southeast Shanxi province.An Andersen six-stage microbial sampler was used to collect air and Rose Bengal Medium (RBM) was used as the medium.Airborne fungi were collected from three sheep houses in Southeastern Shanxi province in four seasons a year.The concentration and particle size characteristics of airborne fungi were analyzed.The results showed that the highest airborne fungal concentration was in autumn,which was significantly higher than the other seasons (P<0.05),and the concentration difference was significant in the 3 periods of morning,noon and afternoon in autumn (P<0.05);The distribution of fungal particle in sampler were same basically in four seasons,and the peak appears at the stage Ⅳ,the fungal particle were mainly distributed from stage Ⅲ to Ⅴ of the sampler,accounting for 72.66%-83.87% of total number;The CMD of airborne fungi ranged from 1.3 to 2.9 μm,The GSD ranged from 1.6 to 2.7 μm;The CMD of summer was significant lower than other seasons (P<0.05).In conclusion,the concentration of airborne fungi in sheep house was closely related to season and had large potential hazards.About 80% of aerosol particles could enter the alveoli of human and animal,the CMD of sheep house was smaller than other animal houses.

Key words: sheep house; aerosol; airborne fungi; particle size distribution

CLC Number:

S851.2⁺4

LI Zhiguo, YU Huan, ZHANG Xinze, DU Yeye, ZHANG Hongmin, CAO Qiqi, GUO Yao, QIAO Tingting, HUO Nairui, LIU Xingguo, GU Shaopeng. Concentration Variation and Aerodynamic Characteristics of Airborne Fungi in Sheep Houses in Southeastern Shanxi Province[J]. , 2018, 45(7): 2034-2040.

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Concentration Variation and Aerodynamic Characteristics of Airborne Fungi in Sheep Houses in Southeastern Shanxi Province

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