Bioaccumulation of non-essential heavy metals in fish in Ir H Djuanda Reservoir, West Java

Abstract

Ir. H. Djuanda or Jatiluhur Reservoir dam the Citarum River, a heavily polluted river. The polluted river causing the pollution of water of the reservoir as well as the contamination of aquatic biota, including fish in the reservoir. The research aimed to determine the bioaccumulation of non-essential heavy metals (Pb, Cd, Hg, As, and Cr) in fish of the reservoir. The research was conducted in July 2018. Water and sediment samples were taken from 4 stations representing parts of the Citarum River inlet, Cilalawi River inlet, and floating net cages area. Fish samples collected consist of wild fish and cultivated fish, namely carp, tilapia, and pangasius. The results showed that the concentrations of Pb, Cd, Hg, As, and Cr were not detected in reservoir water. Heavy metals of Pb, Cd, and Cr detected in the sediment were 2.56-6.12; 0.04-0.08; and 2.621-6.,013 ppm respectively. Heavy metal detected in wild fish and cultivated fish were only Cr, ranged 0.039-0.205 ppm. The value of the Bio-Concentration Factor (BCF) was very low so that the fish belongs to the low accumulate category of heavy metals and therefore, it was safe for consumption.