Airborne microplastics in indoor and outdoor environments of a coastal city in Eastern China

被引：259

作者：

Liao, Zhonglu ^{[1
]}

Ji, Xiaoliang ^{[1
]}

Ma, Yuan ^{[1
]}

Lv, Baoqiang ^{[2
]}

Huang, Wei ^{[3
]}

Zhu, Xuan ^{[1
]}

Fang, Mingzhu ^{[1
]}

Wang, Qi ^{[2
]}

Wang, Xuedong ^{[1
]}

Dahlgren, Randy ^{[1
,4
]}

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] Wenzhou Univ, Natl & Local Joint Engn Res Ctr Ecol Treatment Te, Sch Life & Environm Sci, Wenzhou 325035, Peoples R China

[3] Second Inst Oceanog SOA, Lab Marine Ecosyst & Biogeochem, Hangzhou 310012, Peoples R China

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

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2021年 / 417卷

基金：

中国国家自然科学基金;

关键词：

Airborne microplastics; Spatial variation; Fiber; Fragment; Inhalation exposure; NILE RED; MU-M; IDENTIFICATION; FIBERS; DEPOSITION; INGESTION; TRANSPORT; POLLUTION; DUST;

D O I：

10.1016/j.jhazmat.2021.126007

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Microplastics (MPs) in marine and terrestrial environments have been intensively studied, but the dynamics of airborne MPs remains limited. Existing studies on atmospheric MPs are mostly derived from collection of atmospheric deposition, whereas direct measurements of airborne MPs are scarce. However, the abundance of airborne MPs is more relevant for evaluating human inhalation exposure risk. Herein, airborne MPs in indoor and outdoor environments from urban and rural areas of a coastal city in eastern China were investigated. MP concentrations (mean +/- SD) in indoor air (1583 +/- 1180 n/m3) were an order of magnitude higher than outdoor air (189 +/- 85 n/m3), and airborne MP concentrations in urban areas (224 +/- 70 n/m3) were higher than rural areas (101 +/- 47 n/m3). MPs smaller than 100 mu m dominated airborne MPs, and the predominant shape of airborne MPs was fragments, as opposed to fibers. The larger MP size fractions contained a higher proportion of fibers, whereas the smaller size fractions were nearly exclusively composed of fragments. The health risk caused by ubiquitous airborne MPs should not be discounted as the maximum annual outdoor exposure of airborne MPs can reach 1 million/year, while indoor exposure may be even higher due to higher indoor airborne MP concentrations.

引用

页数：9

共 66 条

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