Update Artikelilmiah: 48296

FARHAN RAMADHAN

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Abstrak (Bhs. Indonesia)

Muara Sungai Donan di Cilacap, Jawa Tengah, menjadi lokasi aktivitas antropogenik, termasuk pembuangan limbah industri minyak, yang berpotensi mencemari air dengan logam berat seperti timbal (Pb), kadmium (Cd), dan merkuri (Hg). Penelitian ini bertujuan mengidentifikasi jenis dan kelimpahan fitoplankton serta mengukur konsentrasi logam berat di lokasi tersebut. Sampel fitoplankton dan air diambil dari tiga stasiun menggunakan metode purposive sampling, mewakili karakteristik lokasi yang berbeda. Identifikasi fitoplankton dilakukan di Laboratorium Fakultas Perikanan dan Ilmu Kelautan Universitas Jenderal Soedirman, sedangkan analisis logam berat menggunakan Atomic Absorption Spectrophotometry (AAS). Hasil penelitian menunjukkan ditemukannya 7 kelas fitoplankton, dengan kelimpahan tertinggi pada kelas Bacillariophyceae dan Cyanophyceae yaitu Stauroneis sp. (3.378,89 ind/L) dan Oscillatoria sp. (861,73 ind/L). Total kelimpahan fitoplankton mencapai 9.661,11 ind/L. Konsentrasi logam berat menunjukkan Hg <0,0001 mg/L, Pb <0,0006 mg/L, dan Cd 0,0029 mg/L. Kadar Hg dan Pb berada di bawah batas ANZECC dan CCME, sedangkan Cd melebihi baku mutu Kepmen LH No. 51 Tahun 2004 dan CCME, namun masih dalam batas toleransi WQA 2013. Konsentrasi Cd juga melebihi rekomendasi ANZECC (0,0007 mg/L).

Abtrak (Bhs. Inggris)

The Donan River Estuary in Cilacap, Central Java, is a site of anthropogenic activities, including the disposal of industrial oil waste, which has the potential to pollute water with heavy metals such as lead (Pb), cadmium (Cd), and mercury (Hg). This study aimed to identify the types and abundance of phytoplankton and measure the concentration of heavy metals at the site. Phytoplankton and water samples were collected from three stations using purposive sampling, representing different activity characteristics. Phytoplankton identification was conducted at the Laboratory of the Faculty of Fisheries and Marine Sciences, Jenderal Soedirman University, while heavy metal analysis was performed using Atomic Absorption Spectrophotometry (AAS). The results revealed the presence of 7 phytoplankton classes, with the highest abundance found in Stauroneis sp. (3,378.89 ind/L) and Oscillatoria sp. (861.73 ind/L). The total phytoplankton abundance reached 9.661,11 ind/L. Heavy metals concentrations showed Hg <0.0001 mg/L, Pb <0.0006 mg/L, and Cd 0.0029 mg/L. The levels of Hg and Pb were below the ANZECC and CCME standards, while Cd exceeded the limits set by the Indonesian Ministry of Environment Decree No. 51 of 2004 and CCME, but remained within the tolerable limits according to the 2013 Water Quality Association (WQA) standard. The Cd concentration also exceeded the ANZECC recommendation (0.0007 mg/L).

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