Identification of Microplastics in Sediment and Shoots (Polymesoda erosa) in the Flows of Lampulo Banda Aceh

Abstract

The spread of microplastics in waters and sediments can be harmful to marine biota. These microplastics can enter the food chain and eventually reach humans so that they can pose a dangerous risk to humans. This study aimed to determine microplastic abundance, polymer, and characteristics based on shape, color, and size in sediments and crab shells in the waters of Lampulo Banda Aceh. This study began with sampling, sample preparation, and microscopic analysis. Identification using a binocular microscope with a magnification of 4×0.10 and identification of polymer types using FTIR. Some types of microplastics found were fragments, fibers, and films. The abundance of microplastics in sediment samples amounted to 1910 particles/kg, while in crab shell samples amounted to 2500 particles/kg. The results of microplastic analysis using FTIR on crab shell samples showed the presence of microplastic polymers such as Polypropylene (PP), Polystyrene (PS), Polyamide (PA), High-density polyethylene (HDPE), and Low-density polyethylene (LDPE). The sources of microplastics come from household waste and the activities of residents, so this is a factor in the presence of microplastics in the waters and causes problems for biota living in Lampulo waters.