Effect of the first-flush phenomenon on the quantification of microplastics in rainwater

被引：18

作者：

Do, Taegu ^{[1
,2
]}

Park, Yujeong ^{[1
]}

Lim, Byungchul ^{[1
]}

Kim, Soyoun ^{[1
,3
]}

Chae, Min -Young ^{[1
]}

Chun, Chi- Hwan ^{[1
]}

机构：

[1] CESCO Co, Inst Sci, Chem Business R&D Dept, 46 Sangil Ro 10 Gil, Seoul 05288, South Korea

[2] Korea Testing & Res Inst KTR, Construct Mat Ctr, 98 Guoyukwon Ro, Gwacheon Si 13810, Gyeonggi Do, South Korea

[3] Ewha Womans Univ, Dept Environm Sci & Engn, 52 Ewhayeodae Gil, Seoul 03760, South Korea

来源：

MARINE POLLUTION BULLETIN | 2023年 / 187卷

关键词：

First -flush effect; Rainfall; Microplastic; Abundance; High frequency sampling; RAIN;

D O I：

10.1016/j.marpolbul.2022.114559

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Precipitation of airborne microplastics (MPs) by rainfall is one of the major transport pathways of MPs from land -to-marine. While most studies examining wet precipitation of MPs collect surface runoffs, direct investigations of MPs in rainwater are hardly reported. In this study, high-frequency and direct rainwater sampling methodology considering the first-flush effect was demonstrated. The variations in MP abundance were evaluated by the inlet size of rainwater collector, time, and duration of sampling. As a result, a stable abundance of MPs was obtained when samplings were conducted at the same time and duration even with different collectors. On the other hand, the abundance increased as much as 4.5 times in samples collected at different times due to the first-flush effect of rainfall. Thus, our methodology that presents MPs concentration versus time curves based on high-frequency sampling would be helpful for easy comparison between similar rainfall studies.

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