Pengaruh limbah uranium terhadap populasi plankton dalam media air

The effect of uranium waste on the population of planktons living in aquatic media. A study has been carried out on the influence of uranium waste on the population of planktons living in aquatic envirionment. Twenty vials were filled with solutions of planktons and grouped into 5 groups consisting of 4 vials each. The groupping was based on the treatment variation, one group for one kind of treatment. The four vials of each group were injected into an aquatium previously filled with 30 l of water.The planktons was, there after, left undistrubed in the aquarium for 15 days in order to allow the adaptation of planktons to the environment. The water in aquarium was then contaminated with uranium waste with the concentration of 0, 2,4 , 5,7 , 8 and 10 ppm. The population of plankton was then observed and counted following the contamination by taking samples every 15 days. Observation and counting were carried out by means of microscope and heamocytometer. It was found that 3 months after the time of contamination the population of plankton in each group was of 516/ul, 334/ul, 217/ul, 186/ul, and 167/ul, for the uranium concentration of 0, 2,4 , 5,7 , 8 and 10 ppm respectively.