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Jace mark this message contains misinformation
｜originally written by Jace
PM 2 意指直徑小於或等於 2 微米的微粒，並非大於！
但真的很少數據真的證明負離子真的對空污真有效，不同家的空氣清淨機也沒有證明真的有負離子，大家選購時可以多注意！
更多關於負離子相關的資訊可以參考以下 paper

References

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6213340/

Negative Air Ions and Their Effects on Human Health and Air Quality Improvement

1. Krueger A.P., Reed E.J. Biological impact of small air ions. Science. 1976;193:1209–1213. doi: 10.1126/science.959834. [PubMed] [CrossRef] [Google Scholar]2. Goldstein N., Arshavskaya T.V. Is atmos

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6213340/
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