A critical assessment of visual identification of marine microplastic using Raman spectroscopy for analysis improvement

被引：601

作者：

Lenz, Robin ^{[1
]}

Enders, Kristina ^{[1
]}

Stedmon, Colin A. ^{[1
]}

Mackenzie, David M. A. ^{[2
]}

Nielsen, Torkel Gissel ^{[1
]}

机构：

[1] Tech Univ Denmark, DTU, Natl Inst Aquat Resources, DK-2920 Charlottenlund, Denmark

[2] Tech Univ Denmark, DTU, Dept Micro & Nanotechnol, DK-2800 Lyngby, Denmark

来源：

MARINE POLLUTION BULLETIN | 2015年 / 100卷 / 01期

关键词：

Small microplastics; RAMAN; Spectroscopy; Photodegradation; PLASTIC DEBRIS; PARTICLES; ENVIRONMENT; ACCUMULATION; DEGRADATION; POLLUTANTS; MICROSCOPY; INGESTION; CHEMICALS; SEDIMENTS;

D O I：

10.1016/j.marpolbul.2015.09.026

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Identification and characterisation of microplastic (MP) is a necessary step to evaluate their concentrations, chemical composition and interactions with biota. MP >= 10 mu m diameter filtered from below the sea surface in the European and subtropical North Atlantic were simultaneously identified by visual microscopy and Raman micro-spectroscopy. Visually identified particles below 100 mu m had a significantly lower percentage confirmed by Raman than larger ones indicating that visual identification alone is inappropriate for studies on small microplastics. Sixty-eight percent of visually counted MP (n = 1279) were spectroscopically confirmed being plastic. The percentage varied with type, colour and size of the MP. Fibres had a higher success rate (75%) than particles (64%). We tested Raman micro-spectroscopy applicability for MP identification with respect to varying chemical composition (additives), degradation state and organic matter coating. Partially UV-degraded post-consumer plastics provided identifiable Raman spectra for polymers most common among marine MP, i.e. polyethylene and polypropylene. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：82 / 91

页数：10

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