Shamsipur M, Rouhani S, Sharghi H, Ganjali M R, Eshghi H
Departments of Chemistry, Razi University, Kermanshah, Iran, Bou-Ali Sina University, Hamadan, Iran, Shiraz University, Shiraz, Iran, and Tehran University, Tehran, Iran.
Anal Chem. 1999 Nov 1;71(21):4938-43. doi: 10.1021/ac990167e.
Eight different recently synthesized macrocyclic diamides were studied to characterize their abilities as strontium ion carriers in PVC membrane electrodes. The electrode based on 1,13-diaza-2,3;11,12-dibenzo-4,7,10-trioxacyclopentadecane-14,15-dione exhibits a Nernstian response for Sr(2+) ions over a wide concentration range (1.0 × 10(-)(1)-3.2 × 10(-)(5) M) with a limit of detection of 8.0 × 10(-)(6) M (0.7 ppm). The response time of the sensor is ∼10 s, and the membrane can be used for more than three months without observing any deviation. The electrode revealed comparatively good selectivities with respect to many alkali, alkaline earth, and transition metal ions. It was used as an indicator electrode in potentiometric titration of carbonate ions with a strontium ion solution.
研究了八种最近合成的大环二酰胺，以表征它们作为PVC膜电极中锶离子载体的能力。基于1,13-二氮杂-2,3;11,12-二苯并-4,7,10-三氧杂环十五烷-14,15-二酮的电极在宽浓度范围（1.0×10⁻¹ - 3.2×10⁻⁵ M）内对Sr(2+)离子表现出能斯特响应，检测限为8.0×10⁻⁶ M（0.7 ppm）。传感器的响应时间约为10秒，该膜可使用三个多月而未观察到任何偏差。该电极对许多碱金属、碱土金属和过渡金属离子显示出相对较好的选择性。它被用作指示电极，用于用锶离子溶液电位滴定碳酸根离子。
