Determination of heavy metals in Gambang Lake Water

Abstract

Heavy metals are a major concern in the treatment of water due to the toxic and other harmful effects these materials can produce. The objective of this study was to determine the heavy metals contains in Gambang Lake water. The water samples were colleated from five sampling points around the lake. Samples were analysed using Atomic Absorption Spectroscopy (AAS) at which this instrument is possible to determine about 70 elements (mainly metal) at very low concentration. The metals analysis was done to detect lead, ferum, copper and magnesium. Based on the result, ferum recorded as the highest concentration ranged between (0.05 5 - 0.183) ppm, while lead recorded concentration ranged between (0.097 - 0.141) ppm and magnesium recorded concentration 0.08 ppm. Copper recorded as the lowest concentration; 0.013 ppm. Result of water quality shows that Gambang Lake is classified between classes I to II using Water Quality Standard. According to this standard, Gambang Lake has moderate quality which is suitable for daily usage and recreational.