Cationic organic impurities such as ternary sulfonium ions and quaternary ammonium and phosphonium compounds are effectively removed from polar liquids such as water or water/alcohol mixtures by contacting the polar liquid with an absorbent comprising a trinitroarenol such as a picric acid. This method is particularly effective for removing such cationic impurities from polar liquids containing organic zwitterions.
将极性液体与含有
苦味酸等三
硝基苯酚的吸收剂接触,可有效去除极性液体(如
水或
水/
酒精混合物)中的阳离子有机杂质,如三元锍离子、季
铵和
鏻化合物。这种方法对于去除含有有机齐聚物的极性液体中的阳离子杂质特别有效。