Electronic Theses and Dissertation

Penelitian ini bertujuan untuk mengetahui kelimpahan dan karakteristik mikroplastik pada air dan sedimen di Danau Aneuk Laot, Sabang. Sampel air dan sedimen dianalisis berdasarkan jenis, warna dan ukuran menggunakan mikroskop, serta identifikasi polimer dilakukan dengan Fourier Transform Infrared (FTIR). Hasil penelitian menunjukkan kelimpahan mikroplastik tertinggi pada air sebesar 11,8 partikel/L dan sedimen sebesar 148 partikel/kg. Bentuk mikroplastik yang ditemukan pada air dan sedimen yaitu Fiber, Fragmen, Film, Foam dan Pelet. Warna mikroplastik yang ditemukan pada sampel air yaitu hitam, coklat, kuning dan biru, sedangkan pada sampel sedimen yaitu hitam, coklat, hijau, kuning dan biru. Ukuran mikroplastik tertinggi pada sampel air dan sedimen yaitu pada rentang 20-40 μm. Jenis polimer yang ditemukan pada sampel air dan sedimen yaitu Nylon, Polymethyl Methacrylate (PMMA), Polypropylene (PP), High-density Polyethylene (HDPE), Polyethylene terephthalate (PET), Polivinil clorida (PVC), dan Politetrafluoroetilena (PTFE).

This study aims to determine the abundance and characteristics of microplastics in water and sediments in Lake Aneuk Laot, Sabang. Water and sediment samples were analyzed based on type, color, and size using a microscope, while polymer identification was performed using Fourier Transform Infrared (FTIR). The results showed that the highest abundance of microplastics was found in water at 11.8 particles/L and in sediment at 148 particles/kg. The forms of microplastics found in water and sediment were fibers, fragments, films, foam, and pellets. The colors of microplastics found in water samples were black, brown, yellow, and blue, while those in sediment samples were black, brown, green, yellow, and blue. The highest microplastic size in air and sediment samples was in the range of 20-40 μm. types of polymers found in water and sediment samples were Nylon, Polymethyl Methacrylate (PMMA), Polypropylene (PP), High-density Polyethylene (HDPE), Polyethylene terephthalate (PET), Polyvinyl chloride (PVC), and Polytetrafluoroethylene (PTFE).