期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1251, 期 -, 页码 154-159出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2012.06.059
关键词
Ion chromatography; Iodide; Iodate; Polystyrene-divinylbenzene; Column-switching; Povidone iodine solution
资金
- National Natural Science Foundation of China [20775070, J0830413, 20911140271]
- Zhejiang Provincial Natural Science Foundation of China [R4080124, J20091495, Y4110532]
A simple ion chromatographic method for simultaneous detection of iodide and iodate in a single running was proposed, with columns packed with homemade functionalized polystyrene-divinylbenzene (PS-DVB) resins and column-switching technique. Homemade resins were functionalized with controllable amounts of quaternary ammonium groups. The low-capacity anion-exchange column and high-capacity anion-exchange column were prepared, due to the resins having different exchange capacities. With this method, iodide and iodate in povidone iodine solution were detected simultaneously in a short time with iodide being eluted off first. A series of standard solutions consisting of target anions of various concentrations from 0.01 mg/L to 100 mg/L were analyzed. Each anion exhibited satisfactory linearity, with correlation coefficient r >= 0.9990. The detection limits (LODs) for iodide and iodate obtained by injecting 100 mu L of sample were 5.66 and 14.83 mu g/L(S/N = 3), respectively. A spiking study was performed with satisfactory recoveries between 101.2% and 100.6% for iodide and iodate. (C) 2012 Elsevier B.V. All rights reserved.
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