Respirometric biomonitor for the control of industrial effluent toxicity

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Abstract
A yeast cell biosystem has been recently developed for the total toxicity testing of a sample that may contain a number of different polluting species. The method uses an amperometric gas diffusion oxygen sensor as indicating electrode and is based on the perturbation of the respiratory activity of the immobilized yeast Saccharomyces cerevisiae; glucose acts as substrate. Several toxic substances were tested: metal ions, phenol and cationic, anionic or nonionic surfactants. Some results of a monitoring program of an industrial wastewater are also reported and discussed.

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