建议在现行SY 5093—92标准中增加酸化滴定法附则，用来测定水媒法生产的CMC产品的取代度。
It is suggested that acidizing treatment and titration should be appended to SY 5093 92 to determine the substitution degree of CMC produced with water-medium method.
采用高温催化-库仑滴定法测定植物叶片中的硫含量，相对标准偏差为1.5%，准确度为99.7%。
The sulfur content in Plant leaf is determined by high temperature catalysis-coulomb titration with the RSD is 1.5% and the accuracy is 99.7%.
目的：探讨两次加入滴定剂标准溶液的体积对酸碱双点电位滴定法准确度的影响。
Objective: Adding two titrant standard solution volumes affecting acid base double point potentiometric method accuracy are discussed.
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