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研究了用离子色谱法测定高效聚合氯化铝（PACS）中SO的方法。用离子交换法去除Al3+等金属离子，利用HCl和H2SO4的沸点差去除Cl-，然后用离子色谱法测定PACS中的SO。样品测定结果令人满意。
A method for the determination of SO in high-efficiency polyaluminum chloride (PACS) by ion chromatography was studied. Ion exchange method to remove Al3 + and other metal ions, the use of HCl and H2SO4 boiling point difference to remove Cl-, and then by ion chromatography Determination of SO in PACS. The result of the sample is satisfactory.