Microplastics Analysis Which Accumulated in Bivalves Caused by Marine Debris in Tambak Lorok Semarang Indonesia
Plastics are a major component of waste in the ocean. The amount is nearly 95% of the total waste collected
along the coastline, surface and seabed. In general, the process of plastic decomposition takes place very slowly1).
Microplastic is a small plastic (≤ 5 mm) that is difficult to decompose, thus making this material will remain in the long
term. Microplastic in aquatic ecosystems produce wider and more harmful effects on living things2) 3). This research used
shellfish because it’s filter feeder and often consumed by humans. The purpose of this research is to know the abundance of
microplastic at Pernaviridis, Anadaragranosa and Amusumpleuronectes, the organ in every shellfish that contain the most
microplastic, and the effect of boiling of shellfish with high temperature to microplastic abundance. Methods of microplastic
abundance analysis were done by isolating the microplastic on each boiled shell sample and not by dissolving the shell in a
65% HNO3 solution, diluted and then observed by a microscope. The result shows that the average microplastic abundance
in shells Anadaragranosa, Amusumpleuronectes and Pernaviridisie 11.89; 3.44; and 14, 64 particles/gram. The microplastic
content of the fiber group is the most dominant in the three types of shellfish. Most microplastic content found in
gastrointestinal organs of the Pernaviridis is 44 particles. There is no difference in the microplastic abundance of shellfish
that has been boiled or not.
Keywords - Amusiumpleuronectes, Anadaragranosa, Microplastic, Perna viridis.