Studies about the adsorption on lichen Evernia prunastri by enthalpimetric measurements

被引:11
作者
Antonelli, ML [1 ]
Ercole, P [1 ]
Campanella, L [1 ]
机构
[1] Univ Rome La Sapienza, Dept Chem, I-00185 Rome, Italy
关键词
lichens; metal uptake; microcalorimetry; Langmuir plot;
D O I
10.1016/S0039-9140(97)00226-9
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
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. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:1039 / 1047
页数:9
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