Unverified90% confidenceDecision RuleTime unknown
去除PM2.5和粉尘必须选带真HEPA滤网（H11级以上）的机型，纯负离子机型对颗粒物去除能力弱且会产生臭氧
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90%
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Long-term
Relevance
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Unverified纯负离子发生器不具备过滤PM2.5和甲醛的能力，仅靠静电让颗粒物沉降到地面/家具，若主诉求是除尘除霾应选带HEPA滤网的空气净化器（负离子仅作辅助功能）84% similarUnverifiedPM2.5过滤选HEPA H11以上（过滤效率≥95%@0.3μm），静电式模块虽宣称高效但会随积尘快速衰减且可能产生臭氧，密闭空间慎选静电式83% similarUnverified纯负离子型车载净化器几乎不能去除PM2.5和甲醛，只能除异味，且负离子会产生臭氧，甲醛/尾气净化必须选HEPA+活性炭复合滤网82% similarUnverified纯负离子发生器不带HEPA滤网，无法真正过滤PM2.5和去除甲醛，若主要诉求是净化空气/除霾除甲醛，应选带滤网的空气净化器而非纯负离子机81% similarUnverified臭氧机不能替代空气净化器：臭氧无法过滤PM2.5和粉尘颗粒，只能氧化分解异味分子和杀菌，需持续净化空气应选HEPA净化器81% similar
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