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Abstract
The effect of nitrilotriacetic acid (NTA) on the growth of Gymnodinium breve was determined by a modification of the flask test of the Provisional Algal Assay Procedure of the Joint Industry / Government Task Force on Eutrophication (1969). The response of G. breve to enrichment of natural waters with NTA alone or NTA in the presence of domestic waste materials was evaluated in terms of four growth parameters (lag time, growth constant, mean generation time and maximum cell count). NTA was not toxic to G. breve at concentrations up to 10 ppm and no biostimulatory effects were noted.
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