Characteristics, fate, and impact of marine plastic debris exposed to sunlight: A review

MARINE POLLUTION BULLETIN

卷:171

Review

Masry, Maria¹  Rossignol, Stephanie¹  Gardette, Jean-Luc²  Therias, Sandrine²  Bussiere, Pierre-Olivier²  Wong-Wah-Chung, Pascal¹ 

[1] Aix Marseille Univ, CNRS, LCE, Marseille, France

[2] Univ Clermont Auvergne, Univ Blaise Pascal, CNRS, Inst Chim Clermont Ferrand ICCF,UMR 6296, 8 Ave Blaise Pascal,TSA 60026,CS 60026, F-63178 Aubiere, France

关键词: Plastic debris;    Photochemistry;    Marine environment;    Oxidation;    Fragmentation;    Analytical techniques;   

DOI  :  10.1016/j.marpolbul.2021.112701

来源: Elsevier

【 摘 要 】

The increase of plastic production from the middle of the twentieth century was inevitably followed by an increase in the amount of plastic dumped in the natural environment. There, the plastic debris are exposed to sunlight, temperature, humidity, and physical stress. This can induce photo-oxidative and thermal degradation. This review discusses the mechanism of plastics UV weathering and its characteristics. Comparison of the photodegradation rate and physico-chemical properties are made according to the weathering mode (natural/ accelerated) and medium (air/water). Since the photodegradation can lead to plastics fragmentation, this phenomenon is described along with the methodologies used in literature to evaluate the fragmentation. The impact of the photodegraded plastic debris on the marine environment is also presented in term of (i) photodegradation products and stabilizers leakage, (ii) organic pollutants accumulation, transfer, and leakage, and (iii) toxicity on marine organisms.

【 授权许可】

Free