目前,，一篇發(fā)表在Environ Sci Technol雜志上的報道"Vacuum Cleaner Emissions as a Source of Indoor Exposure to Airborne Particles and Bacteria"表明，真空吸塵器作為維持室內清潔的基本工具,，反而會排放細菌和粉塵來加劇室內的空氣污染,，同時這些細菌和粉塵還會傳播疾病并且引發(fā)哮喘,。
之前的研究顯示真空吸塵器能增加室內小塵粒和細菌的數量，而我們一生有90%的時間在室內度過,。
科學家測試了21個在澳大利亞銷售的真空吸塵器,，來盡可能多的獲得有關細菌和粉塵排放率的信息,。這些真空吸塵器來自11家制造商，包括家用的和商用的,，已使用時間從6個月到22年的,，價格從少于100美元到800美元的。測試的項目包括使用時間,、品牌以及其他可能影響細菌和粉塵排放率的因素,。
研究發(fā)現，所有真空吸塵器都會排放微塵和細菌到空氣中,。更令人吃驚的是,，所謂的高效率粒子空氣過濾真空吸塵器排放的細菌和粉塵量僅僅比一般吸塵器稍微低一點。另外,，改研究也表明越新越貴的真空吸塵器對空氣的污染越小,。（生物谷bioon.com）
doi:10.1021/es202946w
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PMID:
Vacuum Cleaner Emissions as a Source of Indoor Exposure to Airborne Particles and Bacteria
Luke D. Knibbs†‡, Congrong He†‡, Caroline Duchaine†§, and Lidia Morawska*†‡
Vacuuming can be a source of indoor exposure to biological and nonbiological aerosols, although there are few data that describe the magnitude of emissions from the vacuum cleaner itself. We therefore sought to quantify emission rates of particles and bacteria from a large group of vacuum cleaners and investigate their potential determinants, including temperature, dust bags, exhaust filters, price, and age. Emissions of particles between 0.009 and 20 μm and bacteria were measured from 21 vacuums. Ultrafine (<100 nm) particle emission rates ranged from 4.0 × 106 to 1.1 × 1011 particles min–1. Emission of 0.54–20 μm particles ranged from 4.0 × 104 to 1.2 × 109 particles min–1. PM2.5 emissions were between 2.4 × 10–1 and 5.4 × 103 μg min–1. Bacteria emissions ranged from 0 to 7.4 × 105 bacteria min–1 and were poorly correlated with dust bag bacteria content and particle emissions. Large variability in emission of all parameters was observed across the 21 vacuums, which was largely not attributable to the range of determinant factors we assessed. Vacuum cleaner emissions contribute to indoor exposure to nonbiological and biological aerosols when vacuuming, and this may vary markedly depending on the vacuum used.
