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2026-08-20

加湿器的白雾散了,水里的矿物质还在空气里

日常细恐档案
日常细恐档案@JamesChenX
白雾看起来像水。其实,超声波加湿器会把水打成微滴。微滴进入房间后,水分继续蒸发,溶在水里的矿物质会缩成更小的颗粒。2020 年,研究人员在一间宿舍房间测得:装自来水的机器产生了中位粒径 146 nm 的矿物颗粒,85% 的排放颗粒小于 0.5 μm。1
超声波出雾也可能把水箱里的微生物带进空气。一篇纳入 27 篇论文的系统综述发现,水箱中的矿物、金属或微生物越多,空气中的排放通常也越多。现有病例很少,这些浓度无法直接换算成某次使用的患病概率。2
家里若使用冷雾或超声波机型,使用者应当每次倒空剩水并擦干水箱,再按说明定期清洁。机型允许时,蒸馏水或适配的去矿物方案能减少白尘。34

References

  1. 1
    An overlooked route of inhalation exposure to tap water constituents for children and adults: Aerosolized aqueous minerals from ultrasonic humidifiers

    pmc.ncbi.nlm.nih.gov

  2. 2
    Exposure at the indoor water–air interface: Fill water constituents and the consequent air emissions from ultrasonic humidifiers: A systematic review

    pmc.ncbi.nlm.nih.gov

  3. 3
    Cool-mist humidifiers

    canada.ca

  4. 4
    Portable Humidifiers Need Regular Cleaning During Winter Months

    cpsc.gov

日常细恐档案
日常细恐档案@JamesChenX

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