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Toxicity to aquatic algae and cyanobacteria

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Algal cultures were exposed to water accomodated fractions (WAFs) of Hydrocarbons, C9-C12, isoalkanes. cyclics, arornatics (2-25%) in two separate studies. The 72-hr EL50 value for growth rate were found to be 4.1 and 4.6 -10 mg/l. The 72-hr NOELR values for growth rate were 0.76 and 0.22 mg/l, respectively.