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Studies about the adsorption on lichen Evernia prunastri by enthalpimetric measurements
M L Antonelli1, P Ercole, L Campanella
1Department of Chemistry, University ;La Sapienza', P. le Aldo Moro, 5-00185 Rome, Italy.
Abstract:
Lichens are bioaccumulators of divalent metal ions and the interaction between the lichens and five heavy metals was studied. In order to have a better understanding of the metal-uptake process by the lichens, data from atomic absorption spectroscopy were used to calculate the apparent coordination constants of the lichen-metal ion interactions by means of the Langmuir elaboration and microcalorimetric measurements to obtain enthalpimetric information. The results showed a correlation between the Langmuir constants and enthalpimetric measurements.
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