Analisis Logam Pb, Mn, Cu dan Cd pada Sedimen di Pelabuhan Jetty Meulaboh, Aceh Barat

The presence of heavy metals in sediments can be a pollutant when its consentration passes the thresshold on the standart quality. The objective of the study was to evaluate heary metal consentration in sediment on Jetty port Meulaboh. Sampels of marine sediment were analyzed at Laboratory of BARISTAND by AAS (Atomic Absorption Spectrophotometer). Analysis of heavy metals were conducted in the laboratory include Lead (Pb), Mangan (Mn), Copper (Cu) and Cadmium (Cd). Results of laboratory analysis indicatea that Cd was not detected at three Stations, lead (Pb) consentration at Station 1 112,76 mg/kg and Cu at Station 3 288,7 mg/kg were identified passed the thresshold on the standart quality. While, Mn consentration were identified at 3 Stations passed the thresshold based on the standart quality of Australian and New Zealand Environment and Conservation Council (ANZECC, 2000).Keberadaan logam berat pada sedimen dapat menjadi polutan apabila kandungannya melebihi ambang batas yang ditentukan. Tujuan dari penelitian ini untuk mengkaji kandungan logam berat pada sedimen di Pelabuhan Jetty Meulaboh. Sampel sedimen di analisis menggunakan AAS (Atomic Absorption Spectrophotometer) di BARISTAND. Analisis logam berat yang dilakukan di laboratorium meliputi timbal (Pb), mangan (Mn), tembaga (Cu) dan cadmium (Cd). Hasil analisis laboratorium menunjukkan bahwa Cd tidak terdeteksi pada sedimen di tiga Stasiun pengamatan. Logam Pb pada Stasiun 1 sebesar 112,76 mg/kg dan logam Cu pada Stasiun 3 sebesar 288,7 mg/kg telah melewati ambang batas baku mutu. Sementara Logam Mn pada 3 Stasiun pengamatan telah melewati baku mutu yang ditetapkan oleh Australian and New Zealand Environment and Conservation Council (ANZECC, 2000)