The solubility of calcium sulfate in the four metal complex agents,such as EDTA,HEDP,Nitrilotriacetic acid and Aminosulfonic acid,was studied and discussed under different conditions.

• 利用EDTA、HEDP、氨三乙酸、氨基磺酸等有机络合剂的络合作用,研究探讨了在不同条件下四种金属络合剂对硫酸钙的溶解性能,考察了温度、酸度、浓度等对硫酸钙溶解度的影响。