IDENTIFIKASI KELIMPAHAN DAN KARAKTERISTIK FISIK  MIKROPLASTIK PADA AIR PERMUKAAN DI KALI SURABAYA

Azkafia Alkafi Pasadzani; Syadzadhiya Qothrunada Zakiyayasin Nisa

doi:10.33541/cen.v7i1.8543

Authors

Azkafia Alkafi Pasadzani Program Studi Teknik Lingkungan, Fakultas Teknik dan Sains, UPN Veteran Jawa Timur
Syadzadhiya Qothrunada Zakiyayasin Nisa 2Program Studi Teknik Lingkungan, UPN Veteran Jawa Timur

DOI:

https://doi.org/10.33541/cen.v7i1.8543

Abstract

Surabaya River, a tributary of the Brantas River, serves as a source of raw water for community activities and
needs, while also functioning as a discharge channel for industrial and domestic waste, potentially causing
microplastic pollution. Microplastics are particles smaller than 5 mm that are resistant to degradation, leading to
negative environmental impacts. This study aimed to identify the abundance and characteristics (shape, color, and
size) of microplastics in the water column of the Surabaya River. Sampling was conducted at five stations using a
purposive sampling method referring to SNI 8995:2021. Sample preparation followed the NOAA procedure, and
particle identification was carried out using a digital microscope at 4x magnification. The results showed that
microplastic abundance ranged from 69–181 particles/L, with non-uniform patterns across stations and depths.
Fiber was the dominant type found at nearly all stations, followed by fragments and film. The particle colors
identified were black and transparent, while the 1–3 mm size category was dominant across all stations. Depth
differences did not consistently affect microplastic abundance, which was presumably more influenced by
hydrodynamic conditions, anthropogenic activities around the river, and particle density.

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