EDTA滴定法是测定水泥剂量的主要方法,滴定误差成为影响水泥剂量评定的关键因素。鉴于对实验精度、速度的要求,可以使用数理统计的方法,通过确定一定实验精度下每次滴定所需的最小样本容量来减小误差,提高实验精度和速度。 EDTA titration method is the main method of measuring the amount of cement, titration error has become a key factor affecting the assessment of cement dosage. In view of the experimental accuracy and speed requirements, mathematical statistics can be used to reduce the error by determining the minimum sample size required for each titration with a certain experimental accuracy, and to improve the experimental accuracy and speed.