title: Simultaneous determination of iodide and iodate in povidone iodine solution by ion chromatography with homemade and exchange capacity controllable columns and column-switching technique.
abstract: 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 μL of sample were 5.66 and 14.83 μg/L (S/N=3), respectively. A spiking study was performed with satisfactory recoveries between 101.2% and 100.6% for iodide and iodate.
authors: Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China.
authors: Zhongping
authors: Z
authors: Huang
authors: Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China.
authors: Zuoyi
authors: Z
authors: Zhu
authors: Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China.
authors: Qamar
authors: Q
authors: Subhani
authors: Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China.
authors: Wenwu
authors: W
authors: Yan
authors: Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China.
authors: Weiqiang
authors: W
authors: Guo
authors: Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China. Electronic address: zhuyan@zju.edu.cn.
authors: Yan
authors: Y
authors: Zhu
mesh_terms: D002138:Calibration; D002852:Chromatography, Ion Exchange / Q000295:instrumentation* / Q000379:methods*; D007452:Iodates / Q000032:analysis*; D007454:Iodides / Q000032:analysis*; D057230:Limit of Detection; D011137:Polystyrenes; D011206:Povidone-Iodine / Q000737:chemistry*; D015203:Reproducibility of Results; D012996:Solutions / Q000737:chemistry
chemical_list: D007452:Iodates; D007454:Iodides; D011137:Polystyrenes; D012996:Solutions; C432006:divinylbenzene-polystyrene copolymer; D011206:Povidone-Iodine