Trace element distribution in marine microplastics using laser ablation-ICP-MS

MARINE POLLUTION BULLETIN

卷:160

Article

El Hadri, Hind¹  Gigault, Julien²  Mounicou, Sandra¹  Grassl, Bruno¹  Reynaud, Stephanie¹ 

[1] Univ Pau & Pays Adour, IPREM, CNRS, E2S UPPA, Pau, France

[2] Univ Rennes 1, CNRS, UMR 6118, Geosci Rennes, 1 Av Gen Leclerc,Campus Beaulieu, F-35000 Rennes, France

关键词: Laser ablation-ICP MS;    Microplastics;    Trace elements;    Additives;    Sorption;   

DOI  :  10.1016/j.marpolbul.2020.111716

来源: Elsevier

【 摘 要 】

Due to the dramatic quantity of plastic debris released into our environment, one of the biggest challenges of the next decades is to trace and quantify microplastics (MPs) in our environments, especially to better evaluate their capacity to transport other contaminants such as trace metals. In this study, trace elements (Fe, Cu, Zn, As, Cd, Sn, Sb, Pb, and U) were analyzed in the microplastic subsurface (200 mu m) using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Microplastics subjected to the marine environment were collected on beaches (Guadeloupe) exposed to the north Atlantic gyre. We established a strategy to discriminate sorbed contaminants from additives based on the metal concentration profiles in MP subsurface using qualitative and quantitative approaches. A spatiotemporal correlation of the sorption pattern was proposed to compare MPs in terms of relative exposure time and time-weighted average concentrations in the exposure media.

【 授权许可】

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