Abstract
Tetrahymena pyriformis was cultured in river samples of various origins. The water samples were characterised by a set of physico-chemical parameters and were contaminated with cadmium. Toxicity was defined as the linear relationship between growth reduction versus Cd concentration in the culture. Toxicity decreased as the soluble carbon content of the water increased. Accumulation was studied in a similar way with river samples contaminated with 100 μg Cd litre −1 (sub-lethal dose) or 500 μg Cd litre −1 (lethal dose). The accumulation process was very different at each concentration. At the higher concentration, cellular uptake was governed by the organic carbon, zinc and sodium concentrations, and by the conductivity of the river water. The accumulation in the presence of 100 μg Cd litre −1 was controlled by the concentrations of potassium, magnesium and phosphate.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Environmental Pollution. Series A, Ecological and Biological
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
