Long time,poor stability,and especially big error were the main limitation of traditional complexometric determination of hig h deg ree of substitution(DS)of carboxymethyl srarch.

• 传统的络合滴定法测定羧甲基淀粉取代度(DS)时,存在耗时长,稳定性差,高取代度羧甲基淀粉测定效果差等问题。