Mangrove cockle (P. erosa) is one of the Segara Anakan resourches. This cockle live in ecosystem of mangrove forest with salinity fluctuation and high level acidity. This cockle can be found in Mimika, Papua and Segara Anakan, Cilacap. The used of Mangrove cockle is as an alternative food substance which have high economic value was threatened by heavy metal polluted in their ecosystem that finnally dangerous for human being.
The aim of this research is to know about bioaccumulation level of heavy metal Pb (lead) in soft tissue of Mangrove cockle (Polymesoda erosa) which come from Segara Anakan Kab Cilacap. The research was held from 4th September 2006 until 11st October 2006 in Centre Laboratory, Marine Science Department, Diponegoro University, Tembalang, Semarang. Sediment analysis was conducted in Civil Engineering Laboratory, Diponegoro University. The number of heavy metal was analyzed in Semarang Growth Centre Laboratory. Experimental method was applied in this research. Cockle was kept in water which content Pb (Lead) with concentration 1 ppm, 10 ppm, and 20 ppm. The data obtained were cockle biometry, water parameter, Lead concentration in water, and Lead concentration in soft tissue of Mangrove cockle. Then the data were analyzed using factorial pattern with two predictor variable that is time and concentration.
The result showed that early concentration of cockle sample is 0,0061 ppm, water concentration and sediment concentration from sampling location, each <0,0001 ppm and 11,228 ppm. The number of organic matter at station 1, station 2, and at station 3 each 0,0739 gr, 0,0927 gr, and 0,0775 gr. After three weeks, cockle concentration increased. Maximum average of increasing have occurred from cockle in water with 20 ppm Pb (Lead) that is 0,03269 ppm and Minimum average have occurred from cockle in water with 1 ppm Pb (Lead) that is 0,00483 ppm. But, control cockle which be at free Pb (Lead) water, happen degradation concentration equal to 0,000575 ppm.
Keywords: Polymesoda erosa, bioaccumulation, concentration, Pb.
Author: Johan Danu Prasetya
Advisors: Dr.Ir. Ita Widowati, DEA and Ir. Jusup Suprijanto, DEA.
The aim of this research is to know about bioaccumulation level of heavy metal Pb (lead) in soft tissue of Mangrove cockle (Polymesoda erosa) which come from Segara Anakan Kab Cilacap. The research was held from 4th September 2006 until 11st October 2006 in Centre Laboratory, Marine Science Department, Diponegoro University, Tembalang, Semarang. Sediment analysis was conducted in Civil Engineering Laboratory, Diponegoro University. The number of heavy metal was analyzed in Semarang Growth Centre Laboratory. Experimental method was applied in this research. Cockle was kept in water which content Pb (Lead) with concentration 1 ppm, 10 ppm, and 20 ppm. The data obtained were cockle biometry, water parameter, Lead concentration in water, and Lead concentration in soft tissue of Mangrove cockle. Then the data were analyzed using factorial pattern with two predictor variable that is time and concentration.
The result showed that early concentration of cockle sample is 0,0061 ppm, water concentration and sediment concentration from sampling location, each <0,0001 ppm and 11,228 ppm. The number of organic matter at station 1, station 2, and at station 3 each 0,0739 gr, 0,0927 gr, and 0,0775 gr. After three weeks, cockle concentration increased. Maximum average of increasing have occurred from cockle in water with 20 ppm Pb (Lead) that is 0,03269 ppm and Minimum average have occurred from cockle in water with 1 ppm Pb (Lead) that is 0,00483 ppm. But, control cockle which be at free Pb (Lead) water, happen degradation concentration equal to 0,000575 ppm.
Keywords: Polymesoda erosa, bioaccumulation, concentration, Pb.
Author: Johan Danu Prasetya
Advisors: Dr.Ir. Ita Widowati, DEA and Ir. Jusup Suprijanto, DEA.
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