Microplastic ingestion from atmospheric deposition during dining/drinking activities

被引：71

作者：

Fang, Mingzhu ^{[1
]}

Liao, Zhonglu ^{[1
]}

Ji, Xiaoliang ^{[1
]}

Zhu, Xuan ^{[1
]}

Wang, Zhenfeng ^{[1
]}

Lu, Changjie ^{[1
]}

Shi, Chenwei ^{[1
]}

Chen, Zheng ^{[1
]}

Ge, Liyun ^{[1
]}

Zhang, Minghua ^{[1
,2
]}

Dahlgren, Randy A. ^{[2
]}

Shang, Xu ^{[1
]}

机构：

[1] Wenzhou Med Univ, Sch Publ Hlth & Management, Key Lab Watershed Sci & Hlth Zhejiang Prov, Wenzhou 325035, Peoples R China

[2] Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2022年 / 432卷

基金：

中国国家自然科学基金;

关键词：

Microplastic; Atmospheric deposition; Diet; Health risk; Mitigation; NILE RED; MU-M; HEALTH; RESUSPENSION; INDOOR; POLLUTION; EXPOSURE; FALLOUT; FIBERS; MICRO;

D O I：

10.1016/j.jhazmat.2022.128674

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Human-health risks from microplastics have attracted considerable attention, but little is known about human exposure pathways and intensities. Recent studies posited that inhalation of atmospheric microplastics was the dominant human-exposure pathway. Herein, our study identified that atmospheric microplastics ingested from deposition during routine dining/drinking activities represent another important exposure pathway. We measured abundances of atmospheric-deposited microplastics of up to 10(5) items m(-2) d(-1) in dining/drinking venues, with 90% smaller than 100 mu m and a dominance of amorphous fragments rather than fibers. Typical work-life scenarios projected an annual ingestion of 1.9 x 10(5) to 1.3 x 10(6) microplastics through atmospheric deposition on diet, with higher exposure rates for indoor versus outdoor dining/drinking settings. Ingestion of atmospheric-deposited microplastics through diet was similar in magnitude to presumed inhalation exposure, but 2-3 orders of magnitude greater than direct ingestion from food sources. Simple mitigation strategies (e.g., covering and rinsing dishware) can substantially reduce the exposure of atmospheric deposition microplastics through diet.

引用

页数：9

共 70 条

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