Simultaneous determination of fluorine and iodine in urine by ion chromatography with electrochemical pretreatment

• Published in: Chinese chemical letters Vol. 20; no. 12; pp. 1483 - 1486
• Main Authors: Hu, Kang Kang, Huang, Wei Xiong, Su, Yu Hua, Hu, Rong Zong
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2009; Department of Chemistry, College of Chemistry and Chemical Engineering, and The Key, Laboratory of Analytical Sciences of the Ministry of Education, Xiamen University, Xiamen 361005, China
• Subjects: Electrochemical pretreatment; Fluorine; Iodine; Ion chromatography; Urine; 优化条件; 同时测定; 回收率; 检测限; 氟化物; 电化学预处理; 离子色谱; Urine; Electrochemical pretreatment; Ion chromatography; Fluorine; Iodine
• ISSN: 1001-8417; 1878-5964
• DOI: 10.1016/j.cclet.2009.05.030

A new method for the simultaneous determination of fluorine and iodine in urine by ion chromatography （IC） with electrochemical pretreatment has been developed. The pretreatment was performed in a novel electrochemical oxidationneutralization device （EOND）, in which iodide of the sample was oxidized to iodate and the alkaline digestion sample solution was neutralized. Under the optimized conditions, the limits of detection （LOD, S/N = 3） were 2.5 μg/L for fluoride and 20 μg/L for iodate, respectively. The recoveries were in the range of 93-102% for fluoride and 86-98% for iodate.