PVC Membrane Sensor Based on IO4 – CPC Ion Pair for Potentiometric Determination of Periodate
A new plasticized membrane sensor for determination of periodate based on periodate – cetylpyridinium chloride ion pair complex. The electrode shows a linear, reproducible and stable potentiometric response with anionic Nernstian slope of 58.1 ± 0.5 mV/decade over a wide range of concentration 10-5 – 10-1 M and a detection limit 2.0 × 10-6 M of IO4-. The membrane exhibit a fast response time of 30 - 40 s and independent of pH in the range 2.0 – 9.0. The selectivity coefficients indicate excellent selectivity for periodate over a large number of anions e.g., I-, Br -, Cl -, IO3-, BrO3-, NO3-, SO42-, PO43- , (SCN)4 2- , CrO42-, MnO42-, S2O32-, SO32-, perchlorate, citrate, acetate, oxalate and nitrate. The prepared sensor is successfully used for the analysis of periodate (IO4– ), iodate (IO3-) ions with an average recovery percentage of 99.84 ± 0.34 ％ and 98.22 ± 0.43 ％ , respectively and for determination of hydrazine compounds and aminophenol derivatives with an average recovery percentage of 98.66 ± 0.53 ％ and 98.40 ± 0.56 ％ , respectively.
periodate cetylpyridinium chloride potentiometry PVC membranes hydrazine compounds aminophenol
Abdelhameedm M. OTHMAN
Department of Environmental Biotechnology, Genetic Engineering and Biotechnology Research Institute (GEBRI), Minoufiya University, Sadat City, Egypt
国际会议
2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)
北京
英文
2007-11-13（万方平台首次上网日期，不代表论文的发表时间）