KANDUNGAN LOGAM BERAT PB (TIMBAL) DAN CU (TEMBAGA) PADA LAMUN (Thalasia hempirichii) DI DUSUN MELAHING DAN SAPA SEGAJAH BONTANG KALIMANTAN TIMUR

Abstract

Heavy metals in the waters will be absorbed by living organisms through biological processes and eventually accumulate. The heavy metal content that accumulates in seawater and sediment will enter into the food chain system and affect the life of the organism. seagrass beds are depictions of a series or environmental model on the basis of the same ecological conditions in seagrass beds. The purpose of this study was to determine the content of heavy metals Lead (Pb) and Copper (Cu) in Seagrass (Thallasia hempichii) in the waters of dusun Melahing and Segajah Sapa in Bontang City, East Kalimantan. This research was conducted for 2 months from March 2016 to April 2016, starting from research preparation to data analysis.The main parameters observed were concentrations of Pb and Cu heavy metals in water, sediments and seagrasses. Supporting parameters for Water Quality in the study locations included: Temperature, pH, DO, Brightness , and Water, Sediment, and Seagrass Salinity were analyzed using Atomic Absorption Spectrophotometer (AAS) Pb, and Cu Concentration on Waters based on purposive sampling method found at each station. The highest concentration of Pb in Seagrass was found in dusun Melahing in the East with a value of 51.03 mg/L,while the highest Cu concentration in seagrass was found on Segajah Sapa at the southern point with a value of 7.98 mg/L.The highest Pb concentration on Water in the dusun Melahing at the East point with a value of 0.47 mg/L,while the highest Cu concentration in the Water was found in the East Point dusun Melahing with a value of 0.10 mg/L.The highest Pb concentration in the Sediment was found in dusun Melahing the southern point with a value of 201.69 mg/L,while the highest Cu concentration in sediment is found in the southern point of dusun Melahing with a value of 23.16 mg/L.