Sungai Miai salah satu sungai dengan berbagai macam aktivitas di sekitarnya, seperti banyaknya rumah penduduk, pasar, dan salah satu nya tempat pembuangan akhir sampah. Banyaknya limbah industri dan limbah domestik yang dihasilkan oleh penduduk setempat mengakibatkan terjadinya kontaminasi air. Pencemaran logam berat seperti Fe telah menjadi perhatian utama dalam ekosistem perairan, terutama di Sungai Miai Kota Banjarmasin. Tujuan penelitian ini untuk mengukur konsentrasi Fe pada air dan ikan sepat serta mengetahui hubungannya dengan berat ikan. Penelitian ini dilakukan dengan mengambil sampel ikan sepat dan air pada 2 titik lokasi berbeda dan untuk pengujian kandungan logam berat di analisis dengan metode AAS. Hasil kadar Fe pada air sungai di titik 1 rata-rata 1,155 mg/L dan di titik 2 rata-rata 2,102 mg/L telah melebihi batas baku mutu. Hasil kadar Fe pada ikan di titik 1 rata-rata 26,450 mg/Kg dan di titik 2 rata-rata 22,466 mg/Kg telah melebihi batas baku muku. Hubungan Fe di air dan di ikan sebesar r = -0,999 artinya berkorelasi sangat kuat dan berlawanan. Adapun hubungan Fe di ikan dengan berat badan ikan berkorelasi sangat rendah dengan nilai r = 0,164.

Kata kunci: Bioindikator, Fe, ikan sepat, korelasi

Miai River is one of the rivers with various activities around it, such as many houses, markets, and one of the landfills. The amount of industrial waste and domestic waste produced by local resident results in water contamination. Heavy metal pollution such as Fe has become a major concern in aquatic ecosystems, especially in the Miai River of Banjarmasin City. The purpose of this study was to measure the concentration of Fe in water and sepat fish and determine its relationship with fish weight. This study was conducted by taking samples of fish and water at 2 different locations and for testing heavy metal content was analyzed by the AAS method. The results of Fe levels in river water at point 1 averaged 1.155 mg/L and at point 2 averaged 2.102 mg/L, exceeding the quality standard limit. The results of Fe levels in fish at point 1 averaged 26.450 mg/Kg and at point 2 averaged 22.466 mg/Kg exceeded the standard limit. The relationship between Fe in water and in fish is r = -0.999, meaning that the correlation is very strong and opposite. The relationship between Fe in fish and fish body weight is very low with a value of r = 0.164.

Keywords: Bioindicator, correlation, Fe, sepat fish