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公共场所室内空气中有害微生物引起的健康风险越来越受到人们的关注.本研究针对典型高校公共场所室内空气,考察了不同类型场所空气中总异养菌的浓度水平及其与颗粒物浓度、活动人数、温度、湿度等影响因素的相关性.结果表明,某高校体育场馆空气中总异养菌浓度显著高于教室、宿舍等场所,为13~154 CFU·m-3.针对多个体育场馆的分析结果表明,活动人数对室内空气中微生物浓度影响最大,与总异养菌浓度呈线性正相关,回归分析得到的R2达0.92.室内空气中PM_(2.5)、PM10及温度、湿度均与空气微生物浓度无显著相关关系.针对空气中抗生素抗性菌的研究表明,室内空气中具有氨苄青霉素、四环素和青霉素抗性的总异养菌比例为20%~50%,其中,可吸入异养菌中氨苄青霉素抗性菌比例可达40%.
More and more attention has been paid to the health risks caused by harmful microorganisms in indoor air of public places.This study aimed at the indoor air of typical public places in universities and studied the concentration level of total heterotrophic bacteria in the air of different types of places and their relationship with the concentration of particulate matter, The results showed that the concentration of total heterotrophic bacteria in air of gymnasiums and gymnasiums in a certain university was significantly higher than those in classrooms and dormitories, which were 13-154 CFU · m-3. The results showed that the number of active persons had the greatest effect on the concentration of microorganism in indoor air and had a positive linear correlation with the concentration of total heterotrophic bacteria. The R2 value obtained by regression analysis reached 0.92. PM_ (2.5), PM10, temperature and humidity in indoor air were There was no significant correlation between airborne microorganism concentration.Studies on airborne antibiotic resistant bacteria showed that the ratio of total heterotrophic bacteria with ampicillin, tetracycline and penicillin in indoor air was 20% ~ 50%, among which, inhalable heterotrophic Ampicillin resistant bacteria in bacteria up to 40%.