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醋酸——醋酸铵缓冲体系中柠檬酸对高岭石的溶解特征
Authors
介晓磊
李清曼
王兴祥
胡华锋
Publication date
1 January 2008
Publisher
Abstract
采用间歇法(batch method)模拟研究醋酸-醋酸铵缓冲体系中柠檬酸对高岭石的溶解特征。结果表明:反应液中Al、Si浓度随柠檬酸浓度提高、反应液pH降低及反应时间的推移而增加;且低浓度柠檬酸(1mmol L-1)时,随着酸度的升高,配体促进溶解速率(RL)减小;高浓度柠檬酸(≥5mmol L-1)时,随着酸度的升高,配体促进溶解速率(RL)增加,但增幅随pH的降低而大幅减弱;且随着酸度的升高,配体对高岭石溶解的贡献相对减弱,但相对于质子,本试验柠檬酸浓度及酸度范围内,其对高岭石溶解的贡献仍是主要的
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Institute of Hydrobiology, Chinese Academy Of Sciences
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Last time updated on 15/03/2018