Logam berat sangat berbahaya bagi biota laut maupun trofik level diatasnya. Penelitian ini bertujuan untuk mengetahui kandungan logam berat di perairan Socah dan Kwanyar kabupaten Bangkalan. Penelitian ini dilaksanakan selama 3 bulan. Pengambilan sampel air menggunakan botol sampel, sedangkan pengambilan sampel sedimen menggunakan grab sampler. Sampel kemudian dianalisa dengan spektrofotometer serapan atom (SSA). Hasil menunjukkan bahwa kandungan logam berat Cd, Cu, Pb, dan Hg pada air di perairan Socah dan Kwanyar masih dibawah ambang batas baku mutu air laut, sedangkan kandungan logam berat di sedimen melebihi ambang batas baku mutu air laut untuk biota laut. Secara umum, kandungan logam berat di sedimen lebih tinggi dari pada kandungan logam berat di air. Kata Kunci : Logam berat, Pencemaran, Spektrophotometer HEAVY METALS CONTENTS IN WATER AND SEDIMENT IN KWANYAR AND SOCAH WATER, BANGKALANHeavy metals are very dangerous for marine life as well as the trophic level above. This study aims to determine the content of heavy metals in the waters Socah and Kwanyar Bangkalan. This study was conducted over 3 months. Water sampled using a sample bottle, while sediment samples was taken using a grab sampler. The sample was then analyzed by atomic absorption spectrophotometer (AAS). Results showed that the content of heavy metals Cd, Cu, Pb and Hg in the water in the Socah and Kwanyar waters still below the seawater quality standard limits, whereas the heavy metal content in sediments exceeded the water quality standard for marine sea. In general, the content of heavy metals in sediment is higher than on the water.Keywords: Heavy metals, Pollution, AA
