Microplastics contamination in the fishes of selected sites in Pasig River and Marikina River in the Philippines.

Autor: Espiritu EQ; Environmental Science Department, Ateneo de Manila University, Quezon City, Philippines. Electronic address: eespiritu@ateneo.edu., Rodolfo RS; Environmental Science Department, Ateneo de Manila University, Quezon City, Philippines., Evangelista SMJ; Environmental Science Department, Ateneo de Manila University, Quezon City, Philippines., Feliciano JJG; Environmental Science Department, Ateneo de Manila University, Quezon City, Philippines., Sumaway AMN; Environmental Science Department, Ateneo de Manila University, Quezon City, Philippines., Pauco JLR; Department of Chemistry, Ateneo de Manila University, Quezon City, Philippines., Alvarez KVN; Department of Chemistry, Ateneo de Manila University, Quezon City, Philippines., Enriquez EP; Department of Chemistry, Ateneo de Manila University, Quezon City, Philippines.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2023 Feb; Vol. 187, pp. 114573. Date of Electronic Publication: 2023 Jan 12.
DOI: 10.1016/j.marpolbul.2023.114573
Abstrakt: Microplastics (MPs), <5 mm in size, are a concerning pollutant in bodies of water because they can be ingested by biological organisms, posing risks to humans and the environment. This study assessed the extent of MPs contamination in various fish species (Oreochromis niloticus, Arius manillensis, and Pterygoplichthys spp.) in selected sites along two major river systems in the Philippines - Pasig and Marikina Rivers. An optimized Raman microspectroscopy technique was used for imaging and identification of MPs using a mean laser spot size of about 1 μm, which is advantageous in the identification of fibers which have small diameters (<50 μm). It also allowed the simultaneous identification of MPs and their pigment additives, which in turn enabled the tracing of possible sources of these MPs. This is important because the fate and accumulation of MPs in rivers systems, as well as its toxicity is dependent on various factors including polymer type and surface chemistry. Majority of the MPs identified from all the fish species were composed of polypropylene and polyethylene in the form of fragments, which reflects both the widespread use of these polymers for packaging and their environmental fate as riverine plastic debris. Moreover, the detection of MPs in the fish species may affect the food chain and eventually pose health risks for humans. The study could provide guidance on waste and environmental water management in the surrounding region.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Emilyn Q. Espiritu reports financial support was provided by Republic of the Philippines Department of Science and Technology.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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