两点电位滴定法测定食盐中碘含量的研究

摘要

A new method for detecting iodine content in salt by two-point potentiometeric titration is established.The titrimetric chemical measuring point can be calculated only by recording the titration data twice near the terminal with this method.The experimental results show that this method is con-venient to operate and handle the data with higher precision and accuracy,and the analytical speed is greatly improved compared with that of the national standard method.%提出了用两点电位滴定法测定食盐中碘的新方法，该法只需在终点附近记录两次滴定数据即可计算滴定的化学计量点。实验结果表明：该法操作方便，数据处理简单，精密度与准确度均较高，分析速度较国标法有较大提高。