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Assessment of bioaerosols in indoor air of glasshouses located in a botanical garden

机译：植物园温室室内空气中生物气溶胶的评估

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Plants, like humans and pets, can be regarded as significant sources of airborne bacteria and fungi in different indoor environments. Especially abundant collection of distinct vegetation can be found in glasshouses of botanical gardens. However, bioaerosol concentrations, particle size distribution and species composition have not been studied in these facilities. Hence, the indoor air of glasshouses in a botanical garden was sampled with regard to bioaerosol quantitative and qualitative characteristics in comparison to those of the garden outdoor and adjacent street air. Both in winter and summer sampling times, higher concentrations of airborne bacteria and fungi were ascertained in the glasshouses compared to those detected at the outdoor sites. The respirable fraction of microorganisms prevailed, showing distinct contribution of fine bioaerosol particles in size below 4.7 mu m (.2.1 mu m for bacteria in winter), within the indoor air. Distinct plant or soil derived bacteria and fungi, with the presence of potentially hazardous and allergenic agents, were identified in this environment. The results indicate that different plants, assembled in the closed area as the garden glasshouses, significantly affect the indoor air quality. The garden workers and visitors should be aware of higher exposure to bioaerosols in these facilities than in the outdoor air.
机译：在不同的室内环境中，植物（如人类和宠物）可被视为空气传播细菌和真菌的重要来源。在植物园的温室中可以发现特别丰富的独特植被。但是，尚未在这些设施中研究过生物气溶胶浓度，粒径分布和物种组成。因此，与植物园室外和邻近街道的空气相比，对植物园玻璃温室的室内空气进行了生物气溶胶定量和定性分析。在冬季和夏季的采样时间中，与在室外场所检测到的相比，在温室中确定的空气传播细菌和真菌的浓度更高。微生物的可呼吸部分占了上风，在室内空气中显示出尺寸小于4.7微米（冬季细菌为0.2微米）的生物气溶胶细颗粒的独特贡献。在这种环境下，已鉴定出存在潜在危险和过敏原的独特植物或土壤细菌和真菌。结果表明，在封闭区域内组装成花园玻璃温室的不同植物会显着影响室内空气质量。园林工人和游客应注意，与室外空气相比，这些设施中生物气溶胶的暴露量更高。

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