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Interaction of higher marine fungi with the herbicide atrazine 3. adsorption of atrazine to the marine fungus dendryphiella salina



Interaction of higher marine fungi with the herbicide atrazine 3. adsorption of atrazine to the marine fungus dendryphiella salina



Chemosphere 11(9): 885-890



The adsorption of the herbicide 14C-atrazine to the marine fungus Dendryphiella salina was studied using sodium azide as an inhibitor of active uptake. Adsorption of atrazine (94 ppb) reached equilibrium within 6 h. Adsorption as a function of concentration (9.4-468 ppb) conformed to the empirically derived Freundlich equation giving a K [a constant] value of 6.2. Atrazine on the fungal cell surface was easily desorbed by successive artificial seawater washes indicating a relatively loose binding. The ability of the marine fungus D. salina to remove 14C-atrazine from an artificial seawater medium suggests an environmental role in the transport and redistribution of atrazine in estuaries.

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