The Content of Lead (Pb) at The Water and Lobster (Macrobrachium rosenbergii L.) in Water of Alalak River on West Berangas Area

Abstract

The aim of this research was to know how the content of lead in the river, the meat and the shell of lobsters at the Alalak River of Berangas Area. The kind of this research was descriptive research, which was to describe something of the condition according to nature. Instruments used consists of some tools and materials. The tools were : Atomic Absorption Spectrophotometry, bucket, and stoppered glasses and water and lobsters as materials. The method of this research was a descriptive method. Procedures of this research were to take off the water, and lobster samples are done with direct observation in the field which consisted of four sampling points. The water samples were entered into the bucket, and the lobster samples were entered into the stoppered glasses. Technical measurement of Pb at the water and the meat, as well as the skin of the lobsters, using the Atomic Absorption Spectrophotometry tool. The Pb content tests of water were done at the Health Laboratory of Banjarmasin, whereas Pb content tests of the meat and the skin of lobsters were done in the Basic Laboratory of MIPA Banjarbaru. The results showed that the Pb contents in water were average of 0.0208 mg/l. It was below the threshold of quality standard (0.3 mg/l) based on regulation of South Kalimantan Governor No. 05 in 2007. The averages of Pb contents in the meat of lobsters were 5.147 mg/Kg, and in the skin of lobsters were 15.02 mg/Kg. The Pb content of the meat and the skin of the lobsters were upper the threshold of quality standards (0.1 mg/Kg) based on decision of Dirjen POM no. 03725/VII/1989. So, people should reduce to consume the lobsters from Alalak River especially communities of Berangas and its around areas.