快速检索
年期检索
›› 2015, Vol. 10 ›› Issue (5): 105-109.
Haiyan Huang, Xizhe Li, Zhong Yuan*
Haiyan Huang, Xizhe Li, Zhong Yuan*
摘要： A method for determination of total content of iodine in Wuhai Yingliu Pill and Neixiao Luoli Pill was developed by UV-Vis spectroscopy at 420 nm wavelength. Firstly, all the sample solutions in this work and the mixture of K2CO3-ZnSO4 and KClO3- NaCl were heated in dry bath at 300°C for about 3 h; Then the supernatant was collected after dissolving with water; At last, the absorbance was measured based on the catalytic of iodine in arsenic cerium oxide reduction reaction. Using this method, 23 samples were analyzed. A good linear regression relationship was obtained over the range of 0-1200 μg/L (r=0.9989) for standard solutions, the recovery rate was 96.54%, RSD=3.02% (n=9). The method was successfully applied to analyze these two Chinese patent medicines as a quantity control for clinical use in different types of thyroid disease.
