COVID-19: Performance study of microplastic inhalation risk posed by wearing masks.
COVID-19: Performance study of microplastic inhalation risk posed by wearing masks.
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DOI：
10.1016/j.jhazmat.2020.124955
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发表时间：
2021-06-05
影响因子：
13.6
通讯作者：
Song K
中科院分区：
文献类型：
--
作者：
Li L;Zhao X;Li Z;Song K
由于2019年冠状病毒病在全球蔓延，戴口罩已成为全球新常态。由于戴口罩而吸入微塑料的报道很少。本研究使用不同类型的常用口罩进行呼吸模拟实验，并调查微塑料吸入风险。还测试了重复使用经过各种处理过程的口罩造成的微塑料吸入。结果表明，戴口罩大大降低了吸入颗粒物的风险（例如，颗粒状微塑料和未知颗粒），即使在连续磨损720 h时也是如此。外科手术、棉制、时尚和活性炭口罩的佩戴会带来更高的纤维状微塑料吸入风险，而所有口罩在使用时间低于预期（<4小时）时通常都会减少暴露。N95造成的纤维状微塑料吸入风险较小。在口罩经过不同的消毒预处理过程后重复使用口罩会增加颗粒的风险（例如，颗粒状微塑料）和纤维状微塑料吸入。紫外线消毒对纤维状微塑料吸入的影响相对较弱，因此，如果从微生物学角度证明有效，可以推荐作为重复使用口罩的处理过程。与不戴口罩相比，佩戴N95口罩可将球形微塑料的吸入风险降低25.5倍。
Wearing face masks has become the new normal worldwide due to the global spread of the coronavirus disease 2019. The inhalation of microplastics due to the wearing of masks has rarely been reported. The present study used different types of commonly used masks to conduct breathing simulation experiments and investigate microplastic inhalation risk. Microplastic inhalation caused by reusing masks that underwent various treatment processes was also tested. Results implied that wearing masks considerably reduces the inhalation risk of particles (e.g., granular microplastics and unknown particles) even when they are worn continuously for 720 h. Surgical, cotton, fashion, and activated carbon masks wearing pose higher fiber-like microplastic inhalation risk, while all masks generally reduced exposure when used under their supposed time (<4 h). N95 poses less fiber-like microplastic inhalation risk. Reusing masks after they underwent different disinfection pretreatment processes can increase the risk of particle (e.g., granular microplastics) and fiber-like microplastic inhalation. Ultraviolet disinfection exerts a relatively weak effect on fiber-like microplastic inhalation, and thus, it can be recommended as a treatment process for reusing masks if proven effective from microbiological standpoint. Wearing an N95 mask reduces the inhalation risk of spherical-type microplastics by 25.5 times compared with not wearing a mask.
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