Shamsipur M, Javanbakht M, Mousavi M F, Ganjali M R, Lippolis V, Garau A, Tei L
Department of Chemistry, Razi University, Kermanshah, Iran.
Talanta. 2001 Dec 24;55(6):1047-54. doi: 10.1016/s0039-9140(01)00434-9.
Three different mixed aza-thioether crowns containing a 1,10-phenanthroline sub-unit were investigated to characterize their abilities as copper(II) ion carriers in PVC-membrane electrodes. The electrode based on L1 exhibited a Nernstian response for Cu(2+) ions over a wide concentration range (2x10(-1) to 1x10(-5) M) with a limit of detection of 8.0x10(-6) M (0.5 p.p.m.). The response time of sensor is 15 s, and the membrane can be used for more than 3 months without observing any deviation. The electrode revealed comparatively good selectivities with respect to many alkali, alkaline earth, transition and heavy metal ions, and could be used in a pH range of 2.5-5.5. It was applied to the direct determination and potentiometric titration of the copper(II) ion.
研究了三种含有1,10 - 菲咯啉亚基的不同混合氮杂硫醚冠醚，以表征它们作为PVC膜电极中铜（II）离子载体的能力。基于L1的电极在较宽的浓度范围（2×10⁻¹至1×10⁻⁵ M）内对Cu(2+)离子表现出能斯特响应，检测限为8.0×10⁻⁶ M（0.5 ppm）。传感器的响应时间为15秒，该膜可使用3个月以上而未观察到任何偏差。该电极对许多碱金属、碱土金属、过渡金属和重金属离子显示出相对较好的选择性，并且可在pH范围2.5 - 5.5内使用。它被应用于铜（II）离子的直接测定和电位滴定。
