Arenas Blancas (El Hierro island), a new hotspot of plastic debris in the Canary Islands (Spain)

MARINE POLLUTION BULLETIN

卷:169

Article

Hernandez-Sanchez, Cintia^1,2  Gonzalez-Salamo, Javier^2,3  Diaz-Pena, Francisco J.⁴  Fraile-Nuez, Eugenio⁵  Hernandez-Borges, Javier^2,3 

[1] Univ La Laguna ULL, Dept Obstet & Ginecol,Secc Naut Maquinas & Radioe, Area Med Prevent & Salud Publ,Escuela Politecn Su, Pediat Med Prevent & Salud Publ,Toxicol Med Foren, Via Auxiliar Paso Alto 2, Santa Cruz De Tenerife 38001, Spain

[2] Univ La Laguna ULL, Inst Univ Enfermedades Trop & Salud Publ Canarias, Avda Astrofis Fco Sanchez S-N, San Cristobal De La Lagu 38206, Spain

[3] Univ La Laguna ULL, Fac Ciencias, Dept Quim, Unidad Dept Quim Analit, Avda Astrofis Fco Sanchez S-N, San Cristobal De La Lagu 38206, Spain

[4] Univ La Laguna ULL, Fac Ciencias, Dept Biol Anim Edafol & Geol, Avda Astrofis Fco Sanchez S-N, San Cristobal De La Lagu 38206, Spain

[5] CSIC, Inst Espanol Oceanog IEO, Ctr Oceanog Canarias, Calle Farola del Mar 22, Santa Cruz De Tenerife 38180, Spain

关键词: Marine debris;    Microplastics;    Mesoplastics;    Macroplastics;    El Hierro;    Canary Islands;    Infrared spectroscopy;   

DOI  :  10.1016/j.marpolbul.2021.112548

来源: Elsevier

【 摘 要 】

The present work has studied the incidence and type of micro (1-5 mm), meso (5-25 mm) and macroplastics (>25 mm) that have reached Arenas Blancas beach, located in the north coast of El Hierro island, in the Canary Islands (Spain), from October 2019 to May 2020 (13 sampling dates with 3 sampling points each). Taking into consideration the three studied plastic debris fractions (macro, meso and microplastics), a total of 9206 items were found, which had a total weight of 1169.7 g and a concentration of 891.3 +/- 91.5 items/m(2) (118.3 +/- 17.8 g/m(2) and 2.3 +/- 0.4 g/L). Regarding their colour, most of them were transparent/white/clear, especially in the microplastic fraction in which they accounted for a 68% of the total. Attenuated Total Reflectance Fourier Transform Infrared spectroscopy of meso and microplastic fractions indicated that most of the particles were either polypropylene and polyethylene followed by polystyrene in a much lower amount. In general, the total amount of plastic debris that arrives to the beach by the persistent oceanic current pattern linked to the easternmost branch of the North Atlantic Subtropical Gyre is comparable to those of the most contaminated beaches of the Canary Islands archipelago, suggesting that a new hotspot of plastic debris arrival has been found.

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