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用２７ＡｌＮＭＲ方法研究了碱化度（Ｂ），Ａｌ３＋／ＳＯ摩尔比及水中稀释过程对ＰＡＣＳ（含ＳＯ的聚合氯化铝）结构的影响．实验结果表明，ＰＡＣＳ中铝含量大子０．９ｍｏｌ／Ｌ时，水中稀释对ＰＡＣＳ聚合度影响较大，小于０．９ｍｏｌ／Ｌ后水中稀释对ＰＡＣＳ聚合度影响较小．水中稀释可使聚合大分子向Ａｌ１３结构转化，这种转化能力的大小取决于ＰＡＣＳ中Ｂ的高低和Ａｌ３＋／ＳＯ摩尔比的大小．Ｂ的提高或ＳＯ含量的增加（Ａｌ３＋／ＳＯ摩尔比减小），都使这种转化能力有所增加．
The effect of alkalization degree (B), Al3 + / SO molar ratio and water dilution on the structure of PACS (polyaluminum chloride containing SO) was investigated by 27AlNMR. The experimental results show that when the aluminum content in PACS is larger than 0.9 mol / L, the dilution in water has a great influence on the degree of polymerization of PACS. When the concentration is less than 0.9 mol / L, the dilution in water has little effect on the degree of polymerization of PACS. Dilution of water can make polymeric macromolecules to Al13 structure conversion, the ability of this transformation depends on the size of B in the PACS and Al3 + / SO molar ratio size. The increase of B or the increase of SO content (decrease of Al3 + / SO molar ratio) all make this transformation ability increase.