引用本文:
Fu Chang WANG, Ya Qin CHAI, Ruo YUAN Chongqing. A Novel Tetraiodocadmate(Ⅱ)-PVC Membrane Electrode for the Potentiometric Determination of Cadmium(Ⅱ)[J]. Chinese Chemical Letters,
2006, 17(7): 941-944.
Citation: Fu Chang WANG, Ya Qin CHAI, Ruo YUAN Chongqing. A Novel Tetraiodocadmate(Ⅱ)-PVC Membrane Electrode for the Potentiometric Determination of Cadmium(Ⅱ)[J]. Chinese Chemical Letters, 2006, 17(7): 941-944.
Citation: Fu Chang WANG, Ya Qin CHAI, Ruo YUAN Chongqing. A Novel Tetraiodocadmate(Ⅱ)-PVC Membrane Electrode for the Potentiometric Determination of Cadmium(Ⅱ)[J]. Chinese Chemical Letters, 2006, 17(7): 941-944.
A Novel Tetraiodocadmate(Ⅱ)-PVC Membrane Electrode for the Potentiometric Determination of Cadmium(Ⅱ)
摘要:
A novel tetraiodocadmate(Ⅱ)-selective membrane electrode consisting of tetraiodo-cadmate(Ⅱ)-rhodamin B ion pair (TICRhB) dispersed in a PVC matrix plasticized with 2-nitrophenyl octyl ether (o-NPOE) was prepared. The sensor demonstrated a near-Nernstian response for 1×10-2 to 2×10-6 mol/L cadmium (Ⅱ) at 25℃ with an anionic slope of 29.0. Itrevealed very good selectivity for Cd2+ with negligible interference from many cations and anions,and could be used in a pH range of 3 to 6.
English
A Novel Tetraiodocadmate(Ⅱ)-PVC Membrane Electrode for the Potentiometric Determination of Cadmium(Ⅱ)
Abstract:
A novel tetraiodocadmate(Ⅱ)-selective membrane electrode consisting of tetraiodo-cadmate(Ⅱ)-rhodamin B ion pair (TICRhB) dispersed in a PVC matrix plasticized with 2-nitrophenyl octyl ether (o-NPOE) was prepared. The sensor demonstrated a near-Nernstian response for 1×10-2 to 2×10-6 mol/L cadmium (Ⅱ) at 25℃ with an anionic slope of 29.0. Itrevealed very good selectivity for Cd2+ with negligible interference from many cations and anions,and could be used in a pH range of 3 to 6.
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Key words:
- Tetraiodocadmate(Ⅱ)
- / ion pair
- / membrane electrode
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