A high-precision, effective method for extraction and identification of small-sized microplastics from soil

被引：6

作者：

Li, Gang ^{[1
,2
,3
]}

Pei, Zhiguo ^{[1
]}

Li, Yingming ^{[1
]}

Yang, Ruiqiang ^{[1
,2
,3
]}

Wang, Pu ^{[4
]}

Liang, Yong ^{[4
]}

Zhang, Jilong ^{[5
]}

Zhang, Qinghua ^{[1
,2
,4
,6
]}

Jiang, Guibin ^{[1
,2
,4
,6
]}

机构：

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Taishan Inst Ecoenvironm, Jinan 250100, Peoples R China

[4] Jianghan Univ, Inst Environm & Hlth, Hubei Key Lab Environm & Hlth Effects Persistent T, Wuhan 430056, Peoples R China

[5] State Nucl Secur Technol Ctr, Beijing 102445, Peoples R China

[6] Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Sch Environm, Hangzhou 310024, Peoples R China

来源：

TALANTA | 2024年 / 272卷

基金：

中国国家自然科学基金;

关键词：

Microplastics; Plastic flotation and separator system; SEM-Raman; Recovery;

D O I：

10.1016/j.talanta.2024.125802

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A growing evidence showed that the terrestrial ecosystem was a greater sink for microplastics (MPs) compared with ocean. Owing to the limitation of pretreatment methods, there are few reports on the identification of smallsized MPs(<60 mu m) in soil currently, which may led to an underestimation of the environmental risk of MPs in soil system. In this study, we established an efficient pretreatment method for MPs in soils by developing a novel device, Plastic Flotation and Separator system (PFSS). The device integrated the suspension, digestion and filtration procedures into one system, reducing the losses of pretreatment process. It was shown that the recovery of MPs with size of 45 mu m was 90%, significantly surpassing that of the traditional pretreatment methods in this particle size range. Combined with the SEM-Raman technique, MPs with small size were accurately determined. This work provides an effective method for the extraction and determination of MPs in soils and is of significance for the risk assessment of MPs in soil system.

引用

页数：8