POTENTIAL HEAVY METALS REMEDIATION TEST ON CHAETOCEROS CALCITRANSDWI CANDRA PRATIWI, NIKEN PRATIWI1, GUNTUR, RARASRUM DYAH K. AND AGOES SOEGIANTO
The level of heavy metals in the aquatic environment is currently increasing due to human activities in various fields. Types of heavy metals often found in aquatic environments are Cd and Cu heavy metals. Both of these heavy metals are known to cause toxic effects at high concentrations. In this study the micro algae Chaetoceroscalcitrans will be tested using Cd and Cuheavy metals with control concentration, 0.7, 1.3, and 1.9 ppm with 3 replications and exposed for 96 hours. The results show that exposure to heavy metals can significantly reduce the density of micro algae. The growth of micro algae has decreased with increasing concentration of heavy metals.The final density of micro algae shows that Cu is more toxic than Cd. This can be seen from the IC50 value of Cu heavy metals which is lower than Cd, which are 0.384 and 0.409 ppm, respectively.
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