Influences of new azo dyes to the aquatic ecosystem |
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Authors: | Jin-Seok Bae Harold S Freeman Sung Dong Kim |
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Institution: | (1) Korea Dyeing Technology Center, 703-834 Daegu, Korea;(2) Department of Textile Engineering, Chemistry, and Science, North Carolina State University, 27695-8301 Raleigh, NC, USA;(3) Department of Textile Engineering, NITRI, Konkuk University, 143-701 Seoul, Korea |
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Abstract: | The influences of a series of new azo direct dyes including copper-complexes based on benzidine congeners, 2,2′-dimethyl-5,5′-dipropoxybenzidine
and 5,5′-dipropoxybenzidine, were examined using microorganism, Daphnia magna. The purpose of the research described in this
paper was to use bioassays with daphnids to determine the aquatic toxicity of new azo dyes in which copper was incorporated.
The results clearly show that copper has negative effects to aquatic ecosystem as expected. The study also suggested that
the assay with Daphnia magna was an excellent method to evaluate the influences of dyes to the aquatic environment. |
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Keywords: | Azo direct dyes Daphnia magna Copper Aquatic toxicity Aquatic ecosystem Benzidine |
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