Department of Public Health, College of Health Science, Kaohsiung Medical University, Kaohsiung City, Taiwan.
Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, University of Texas Health Science Center at Houston, TX, United States.
Environ Pollut. 2019 Feb;245:799-809. doi: 10.1016/j.envpol.2018.11.053. Epub 2018 Nov 21.
Jumping on the bed is a favorite behavior of children; however, no study has investigated the increased air pollutants resulting from jumping on the bed. Therefore, we aimed to investigate the elevated concentrations of particulate matter (PM) and bioaerosols from jumping on the bed and making the bed. Simulation of jumping on the bed and making the bed was performed at sixty schoolchildren's houses in Taiwan. PM, PM, PM (PM with aerodynamic diameter less than 10, 2.5, and 1 μm, respectively) and airborne bacteria, fungi and endotoxin concentrations were simultaneously measured over simulation and background periods. Our results show the increase of PM, PM, PM, airborne bacteria and fungi through the behavior of jumping on the bed (by 414 μg m-3, 353 μg m-3, 349 μg m-3, 6569 CFU m-3 and 978 CFU m-3, respectively). When making the bed, the PM, PM, PM, airborne bacteria and fungi also significantly increased by 4.69 μg m-3, 4.09 μg m-3, 4.15 μg m-3, 8569 CFU m-3, and 779 CFU m-3, respectively. Airborne endotoxin concentrations significantly increased by 21.76 EU m-3 following jumping on the bed and making the bed. Moreover, when jumping on the bed, higher PM and PM concentrations in houses with furry pets rather than no furry pets, and less airborne fungi in apartments than in townhouses were found. For making the bed, lower airborne fungi was found in houses using essential oils rather than no essential oils using. The airborne endotoxin concentrations were positively associated with furry pets and smokers in the homes and negatively correlated to the home with window opening with a statistical significance during the periods of jumping on the bed and making the bed. In conclusion, significant increases of PM and bioaerosols during jumping on the bed and making the bed may need to be concerned.
在床上跳跃是儿童喜爱的行为；然而，目前尚无研究调查在床上跳跃会导致空气污染物增加。因此，我们旨在研究在床上跳跃和铺床时产生的颗粒物（PM）和生物气溶胶浓度升高的情况。在台湾的 60 所学童家中模拟了在床上跳跃和铺床的行为。在模拟和背景期间同时测量了 PM、PM、PM（PM 分别指空气动力学直径小于 10、2.5 和 1μm 的颗粒物）以及空气中的细菌、真菌和内毒素浓度。结果显示，在床上跳跃会导致 PM、PM、PM、空气中的细菌和真菌浓度增加（分别增加 414μg/m³、353μg/m³、349μg/m³、6569CFU/m³和 978CFU/m³）。铺床时，PM、PM、PM、空气中的细菌和真菌也分别显著增加 4.69μg/m³、4.09μg/m³、4.15μg/m³、8569CFU/m³和 779CFU/m³。床上跳跃和铺床后，空气中的内毒素浓度显著增加 21.76EU/m³。此外，在床上跳跃时，家中有毛绒宠物的 PM 和 PM 浓度较高，而公寓中的空气中真菌浓度较低。铺床时，使用精油的房屋空气中真菌浓度较低，而不使用精油的房屋空气中真菌浓度较高。空气中的内毒素浓度与家中的毛绒宠物和吸烟者呈正相关，与床上跳跃和铺床期间窗户开启的房屋呈负相关。总之，在床上跳跃和铺床期间 PM 和生物气溶胶浓度的显著增加需要引起关注。
