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The Effects of Some Heavy Metals on Growth and Nutrient Uptake of Chroococcus Dispersus | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 19, Issue 3, 2008, Pages 17-23 | ||
| Author | ||
| Ahmed S. Abd Al-Jabbar | ||
| Abstract | ||
| The Present study deals with the effects of heavy metals Ag, Zn, Pb and Hg on the growth and nutrients uptake of chroococcus dispersus. The study include the effect of these metals on the growth of alga growing in a unialgal culture after its purification.The degrees of inhibition were correlated with the different concentrations of metals. However, the effects of these metals on growth were according to the following sequence (Ag>Hg>Pb>Zn). Ag showed the highest inhibition and it is more toxic than others Heavy metal concentration.The (LC 50) of the metals inhibited the nutrient uptake (NO3 and NH4) in different levels. In the case of No3 Ag showed the highest inhibition, while Zn showed the lowest inhibition.Ammonia uptake was also inhibited by metal concentration which was noticed after one hour of measurement | ||
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