Unverified82% confidenceCautionTime unknown
呼吸道敏感人群或雾霾防护需求，不要买纯负离子无滤网款——负离子只能沉降颗粒物到车内表面，无法真正移除，二次扬尘风险高
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82%
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Long-term
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Unverified不要买纯负离子/臭氧型车载净化器，密闭车内臭氧浓度易超标，对呼吸道有害且无法去除颗粒物90% similarUnverified不建议购买主打负离子且宣称释放高浓度负离子的车载净化器，密闭车内负离子机型的臭氧浓度可能超标，对呼吸道有刺激88% similarUnverified有明确颗粒物/甲醛净化需求的，不该单独买负离子发生器替代空气净化器——负离子对PM2.5的沉降是让颗粒物附着到墙面地面而非收集，无HEPA滤网无法真正去除污染物83% similarUnverified绝对不要购买采用负离子或臭氧发生原理的车载净化器，臭氧浓度在密闭车内易积聚超过0.1ppm，会刺激婴幼儿呼吸道，反而造成二次污染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83% similar
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