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首页> 外文期刊>Materials science & engineering >A new aluminum(III)-selective potentiometric sensor based on N,N'-propanediamide bis(2-salicylideneimine) as a neutral carrier
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A new aluminum(III)-selective potentiometric sensor based on N,N'-propanediamide bis(2-salicylideneimine) as a neutral carrier

机译：基于N，N'-丙二酰胺双（2-水杨酰亚胺）的新型铝（III）电位传感器

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摘要

This work describes the fabrication of a selective polymeric membrane potentiometric sensor for Al~(3+) ion based on N,N'-propanediamide bis(2-salicylideneimine) (NPBS) as a neutral carrier. The proposed sensor, with optimum membrane composition, exhibited an excellent near-Nernstian response for Al~(3+) ion ranging from 7.9 × 10~(-7) to 1.0 × 10~(-1)mol/L with a detection limit of 4.6 × 10~(-7) mol/L and a slope of 19.4 ± 0.3 mV/ dec in pH 3.0 nitrate solution at 25℃. It showed a relatively fast response time (8 s), suitable reproducibility and stability, and good selectivity towards Al~(3+) ion. The operational pH range of the proposed sensor was 2.5-4.0. The response mechanism was discussed in view of UV-visible spectroscopy and the alternating current (AC) impedance technique. In addition, the proposed sensor was successfully used as an indicator electrode in potentiometric titration of Al~(3+) ion and in the direct determination of Al~(3+) ion in real samples.
机译：这项工作描述了基于N，N'-丙二酰胺双（2-水杨亚胺）（NPBS）作为中性载体的Al〜（3+）离子选择性聚合物膜电位传感器的制造。所提出的具有最佳膜组成的传感器对Al〜（3+）离子表现出出色的近能斯特响应，范围为7.9×10〜（-7）至1.0×10〜（-1）mol / L，具有检测极限在25°C的pH 3.0硝酸盐溶液中，4.6×10〜（-7）mol / L的斜率和19.4±0.3 mV / dec的斜率。它显示出相对较快的响应时间（8 s），合适的重现性和稳定性以及对Al〜（3+）离子的良好选择性。建议的传感器的工作pH范围为2.5-4.0。鉴于紫外可见光谱和交流（AC）阻抗技术，讨论了响应机理。此外，该传感器已成功地用作电位滴定法测定Al〜（3+）离子和直接测定实际样品中的Al〜（3+）离子的指示电极。

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  • 来源
    《Materials science & engineering》 |2010年第1期|209-213|共5页
  • 作者

    Yu-Hua Ma; Ruo Yuan; Ya-Qin Chai; Xin-Lu Liu;

  • 作者单位

    Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China;

    Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China;

    Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China;

    Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Al~(3+); sensor; potentiometric response characteristic; ion selective electrode; N.N'-propanediamide; bis(2-salicylideneimine); PVC membrane;

    机译：Al〜（3+）;传感器;电位响应特性;离子选择电极N.N'-丙二酰胺;双（2-水杨亚胺）;PVC膜;

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