Microplastic pollution in the sediment of Jagir Estuary, Surabaya City, Indonesia

• Published in: Marine pollution bulletin Vol. 150; p. 110790
• Main Authors: Firdaus, Muhammad, Trihadiningrum, Yulinah, Lestari, Prieskarinda
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.01.2020; Elsevier BV
• Subjects: Abundance; Coast; Colour; Density; Dry weight; Environmental Monitoring; Estuaries; Estuarine dynamics; Estuary; Fishing dredges; Indonesia; Low density polyethylenes; Microplastic; Microplastic pollution; Microplastics; Microplastics - analysis; Particulates; Plastic debris; Plastic pollution; Plastics; Pollution; Polyethylene; Polypropylene; Sediment; Sediment pollution; Sediment samplers; Sediment samples; Sediments; Water Pollutants, Chemical - analysis; Indonesia; Pollution; Coast; Sediment; Microplastic; Estuary
• ISSN: 0025-326X; 1879-3363
• DOI: 10.1016/j.marpolbul.2019.110790

This study was aimed to investigate the abundance and characteristics of microplastics (MP) in the sediment of Jagir estuary and Wonorejo coast, Surabaya, Indonesia. Sediment samples from 5 sites in the estuary and the adjacent coast were collected in replicates using Ekman dredge sampler. The MP particles were extracted using density separation method. Then the MP particles were counted and categorized according to shape, size, and color under a Zeiss Discovery V.12 stereomicroscope. Identification was done using Thermo Scientific Nicolet iS10 FTIR Spectrometer. The MP shapes comprised fiber (57%), film (36%), and fragment (7%). Abundance of the MP was highest in the Wonorejo coast sediment (590 particles/kg dry weight). The MP particles consisted of 68% large and 25% small sizes and comprised 56.7% polyester, 24.6% low-density polyethylene, and 18.8% polypropylene. The MP colors were 43% transparent, 21% black, 14% blue, 10% white, 8% red, and 4% yellow. •Microplastic concentrations in the sediment increased toward the river mouth.•Microplastic abundance in the sediment of Wonorejo coast was higher than in Jagir estuary.•Large microplastic particles were predominant in the sediment of the estuary and the coast,•Fiber shaped microplastic of polyester type was found in highest abundance in all sampling sites