Application of ammonium cerium sulfate spectrophotometry for determination of iodide in water
10.3760/cma.j.cn231583-20220805-00279
- VernacularTitle:硫酸铈铵分光光度法测定水中碘化物的应用
- Author:
Tingting LIU
1
;
Haiyan WANG
;
Shudong XU
;
Gang DING
;
Xian XU
;
Ji'an XIE
;
Kaiqian WANG
;
Weidong LI
Author Information
1. 安徽省疾病预防控制中心理化检验室，合肥 230601
- Keywords:
Ammonium cerium sulfate spectrophotometry;
Drinking water;
Source water;
Iodide
- From:
Chinese Journal of Endemiology
2023;42(10):838-841
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the application of ammonium cerium sulfate spectrophotometry for determination of iodide in water.Methods:Ammonium cerium sulfate spectrophotometry was used to determine the iodine content of tap water and source water in the range of 0 - 20 and 0 - 200 μg/L iodine concentration. The effect of the method was verified in terms of linear range, detection limit, precision and accuracy.Results:In the range of 0 - 20 and 0 - 200 μg/L iodine concentration, the absolute values of linear correlation coefficients were > 0.999 0; the detection limits were 0.18 and 1.02 μg/L, respectively; the coefficient of variation of low, medium and high iodine concentrations in tap water and source water was less than 5%. In the range of 0 - 20 μg/L iodine concentration, the spiked recovery rates of tap water and source water were 90.33% - 110.46% and 92.21% - 102.82%, respectively; in the range of 0 - 200 μg/L iodine concentration, the spiked recovery rates of tap water and source water were 90.14% - 102.62% and 91.36% - 106.18%, respectively. The national first level standard materials GBW09113g and GBW09114g were tested, and the results of water iodine determination were within the given range of the standard materials.Conclusion:Ammonium cerium sulfate spectrophotometry has a wide linear range, high accuracy, and good precision, making it suitable for widespread application in grassroots areas.
