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EFFECTS OF HUMIC ACID AND WATER HARDNESS ON ACUTE CADMIUM TOXICITY BY USINGSimocephalus exspinosus AS A BIOINDICATER | ||
| Euphrates Journal of Agriculture Science | ||
| Article 1, Volume 5, Issue 4, 2013, Pages 245-255 | ||
| Abstract | ||
| ABSTRACT : This paper was based on study the effect of humic acid and water hardness on acute cadmium toxicity by using Simocephalus exspinosus as a bio indicator. The toxicities were expressed by the median lethal concentration (LC50), and the LC50value for (48-h) of cadmium was 2.5 mg/L. Three concentrations of humic acid were used (50,75 and 100) mgl , the acute cadmium toxicity significantly decreased by increasing humic acid concentration .An increased in water hardness (75 and 100) mgl CaCO3 considered as( moderate hardness and hard) respectively also significantly decreased acute toxicity of cadmium . | ||
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