必离子交换原理 : 2RSO3H++Ca2++2C1 (RS03)2Ca2+2HC1 RN(CH3)OH+H+HCO3 RN+(CH3)HCO3+H2O ❖离子交换原理： ❖2RSO3 -H++Ca2++2Cl- ❖(RSO3 - )2 Ca2++2HCl ❖RN+ (CH3 )3OH-+H++HCO3 - ❖RN+ (CH3 )3HCO3 -+H2O