目前，一篇发表在Environ Sci Technol杂志上的报道"Vacuum Cleaner Emissions as a Source of Indoor Exposure to Airborne Particles and Bacteria"表明，真空吸尘器作为维持室内清洁的基本工具，反而会排放细菌和粉尘来加剧室内的空气污染，同时这些细菌和粉尘还会传播疾病并且引发哮喘。
之前的研究显示真空吸尘器能增加室内小尘粒和细菌的数量，而我们一生有90%的时间在室内度过。
科学家测试了21个在澳大利亚销售的真空吸尘器，来尽可能多的获得有关细菌和粉尘排放率的信息。这些真空吸尘器来自11家制造商，包括家用的和商用的，已使用时间从6个月到22年的，价格从少于100美元到800美元的。测试的项目包括使用时间、品牌以及其他可能影响细菌和粉尘排放率的因素。
研究发现，所有真空吸尘器都会排放微尘和细菌到空气中。更令人吃惊的是，所谓的高效率粒子空气过滤真空吸尘器排放的细菌和粉尘量仅仅比一般吸尘器稍微低一点。另外，改研究也表明越新越贵的真空吸尘器对空气的污染越小。（生物谷bioon.com）
doi:10.1021/es202946w
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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.
