郑州大学学报（理学版）2004，Vol.36Issue(1)：86-91,6.
羧基在酵母菌生物吸附铅时的作用
Contribution of Carboxylate Groups to Lead Biosorption by Yeast
摘要
Abstract
The mechanism of heavy metal sorption by Beer yeast is investigated using different techniques. Potentiometric titration gives some information concerning the acidic groups in the biomass(0.5 mmol/g dry biomass). The esterification of carboxylate functionalities presented in the cell walls of yeast results in a marked decrease in lead uptake. Both the native material and the esterified product are examined via infrared spectroscopy. A peak at 1 744 cm-1 (attributed to the carboxylate stretching) confirms the esterification process. Carboxylate group plays a great role in lead biosorption by Beer yeast.关键词
酯化/酵母菌/生物吸附/滴定Key words
esterification/yeast/biosorption/titration分类
资源环境引用本文复制引用
韩润平,张敬华,石杰,刘宏民..羧基在酵母菌生物吸附铅时的作用[J].郑州大学学报（理学版）,2004,36(1):86-91,6.基金项目
河南省科技攻关资助项目,编号 981160416. （）
