Keywords thiourea;dioxide;polyacrylamide-chromium gel;sodium thiosulfate;gelatination;PAM;HPAM;triethanolamine;

• 二氧化硫脲;聚丙烯酰胺铬凝胶;硫代硫酸钠;凝胶;PAM;HPAM;三乙醇胺;