采用无水乙醇、稀硝酸、去离子水冲洗和加热等处理措施对烟气脱硫石膏进行了不同的处理,运用离子发射光谱仪(ICP)和离子色谱仪(ICS)研究了脱硫石膏中可溶性杂质离子(钠离子、镁离子和氯离子)的存在形态.结果表明,氯离子并未进入石膏晶格,而是存在于液相包含物中；部分镁离子可能替代钙离子进入石膏晶格；大部分钠离子存在于液相包含物中,小部分钠离子进入了脱硫石膏的晶格.
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