考察了多壁碳纳米管(MWNTs)对3种甘草有效成分异甘草苷、甘草苷和甘草酸的吸附性能.分别用紫外分光光度法和HPLC法测定了吸附前后溶液中异甘草苷、甘草苷、甘草酸的含量,考察了静态吸附实验时间、料液起始浓度、溶液体积和pH值对各成分吸附的影响.结果显示,MWNTs对甘草中3种主要有效成分的吸附量明显不同,对异甘草苷的吸附远大于甘草苷和甘草酸,并且不存在竞争吸附,具有明显的选择性吸附特点.
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