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Analisis Kelimpahan Mikroplastik pada Sedimen di Daerah Aliran Sungai Barito, Kabupaten Banjarmasin, Provinsi Kalimantan Selatan
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This Indonesian study measured microplastic abundance in sediments from the Barito River watershed in South Kalimantan, finding microplastics (primarily fragments and fibers) in all samples collected. The results document the extent of plastic pollution entering this major river system and its potential to contaminate aquatic ecosystems downstream.
Banjarmasin merupakan kota yang dikenal dengan sebutan seribu sungai yang terletak di Kalimantan selatan. Aktivitas di sungai akan mempengaruhi kualitas air sungai. Pencemaran sungai kuin ini adalah akibat adanya banyaknya limbah plastik yang menumpuk secara langsung sehingga sungai tersebut menurun kualitasnya. Mikroplastik adalah partikel plastik ukuran kurang dari 5 mm. Penelitian ini bertujuan untuk mengetahui kelimpahan mikroplastik yang ada di DAS Sungai Barito. Metode yang digunakan yaitu pengeringan sedimen, preparasi sampel, inkubasi, dan identifikasi sampel. Hasil menunjukkan bahwa semua sampel sedimen mengandung mikroplastik. Bentuk mikroplastik yang ditemukan yaitu fragmen, fiber, filamen, dan granule. Persentase mikroplastik yang ditemukan antara lain yaitu filaen 51%, fragmen 33%, fiber 15% dan granule 1%. Kelimpahan mikroplastik yang paling tinggi ditemukan di Stasiun Barito 1 yaitu 308 partikel/Kg sedangkan yang paling rendah yaitu di Stasiun Kuin 3 yaitu sebanyak 131 partikel/Kg. Berdasarkan peta sebaran yang telah dibuat, daerah Sungai Barito memiliki sebaran mikroplastik yang paling tinggi.
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This study measured microplastic contamination in water and sediment from the Karang Mumus River in Indonesia, finding widespread pollution attributed to increasing plastic waste disposal in the watershed. The research contributes to understanding microplastic distribution in Southeast Asian freshwater systems.
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