目前,，一篇發(fā)表在Environ Sci Technol雜志上的報(bào)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(nèi)清潔的基本工具,，反而會(huì)排放細(xì)菌和粉塵來加劇室內(nèi)的空氣污染,，同時(shí)這些細(xì)菌和粉塵還會(huì)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(nèi)小塵粒和細(xì)菌的數(shù)量，而我們一生有90%的時(shí)間在室內(nèi)度過,。
科學(xué)家測(cè)試了21個(gè)在澳大利亞銷售的真空吸塵器,，來盡可能多的獲得有關(guān)細(xì)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(shí)間從6個(gè)月到22年的，價(jià)格從少于100美元到800美元的,。測(cè)試的項(xiàng)目包括使用時(shí)間,、品牌以及其他可能影響細(xì)菌和粉塵排放率的因素。
研究發(fā)現(xiàn),，所有真空吸塵器都會(huì)排放微塵和細(xì)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(xì)菌和粉塵量?jī)H僅比一般吸塵器稍微低一點(diǎn),。另外,，改研究也表明越新越貴的真空吸塵器對(duì)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.
