ABSTRACT
The aim of this study is to determine, the comparison of absorption by aquatic plants Hydrilla verticillata and Water hyacinth (Eichhomia crassipes) of malathion insecticide residues in water and comparison of malathion concentrationin tissues of fish fed with of contaminated water plants(Water hyacinth) with tissuesof fish, which was not fedcontaminated water plant. The effect of heating the contaminatedfish tissue, on its level in tissues of rats that consume it.For the first experiment (aquarium filled with 3 litre of water +H. verticillata100 gr + Water hyacinth 100 gr + 20uci14C-labeled malathion); for the second experiment (the first aquarium filled with 3 litre of water + 30 tails of goldfish + 20 uci14C-labeled malathion; second aquarium filled with 3 litre of water + Water hyacinth 100 gr + 30 tail of goldfist + 20 uci 14C ?labeled malathion. For the third experiment (most of contaminated fish tissue in the secondexperiment was driedat room temperature and then given to 30 mice and partly heated and then given to another 30mice). Malathion levels were then analyzed by using a liquid scintillation counter LSC-753 (Aloka). The results of alltreatments were compared using the Student t-test. It can be concluded, H. verticillatawas more efficient compared tothe enceng gondok in absorbing the insecticide malathion residues in water; malathion concentration in the tissues offish fed Water hyacinth was higher than those of fish not fed Water hyacinth; contaminated fish tissue residues ofmalathion, although be heated, can not belowered significantly, levels in the tissue. |
