bivalent cation

It is discussed for the effect of types of surfactants and concentrations, alkaline concentrations, salinity, polymer, crude oil fractions, bivalent cation, non-ionic surfactants on interfacial tensions.

探讨了表面活性剂种类和浓度、碱浓度、矿化度、聚合物、原油馏分、二价阳离子和非离子表面活性剂等对界面张力的影响。

With the action of some bivalent cation, high temperature shift catalyst has been prepared by mixture precipitation method using open-hearth dust as a raw material.

利用钢铁厂平炉尘制备中温变换催化剂，制备成本低，工艺简单，活性达到部颁标准，具有明显的经济效益。

In addition, the complex of quinolone and bivalent canon in seawater or brackish water was speculated not stable, quinolone can be released into media when diluted with water without bivalent cation.

此外，喹诺酮与二价阳离子的螯合产物可能并不稳定，当用无二价阳离子水稀释后药物可被重新释放。