Suppr超能文献

一种用于药物和矿泉水样品中铝测定的选择性和灵敏的碳复合涂层铂电极。

A selective and sensitive carbon composite coated platinum electrode for aluminium determination in pharmaceutical and mineral water samples.

机构信息

Chemistry Department, College of Sciences, Shiraz University, Shiraz 71456-85464, Iran.

出版信息

Anal Chim Acta. 2010 Mar 3;662(1):76-81. doi: 10.1016/j.aca.2009.12.033. Epub 2009 Dec 29.

Abstract

A novel coated wire electrode (CWE) for Al(III) ions is described based on 2-(1H-benzo[d]imidazole-1-yl)-1-phenylethanoneoxime as a new ionophore in carbon-PVC composite. The sensor exhibits significantly enhanced selectivity toward Al(3+) ions over the concentration range 4.3 x 10(-7) to 5.0 x 10(-2)M with a lower detection limit of 2.5 x 10(-7) M and a Nernstian slope of 19.41+/-0.52 mV decade(-1) of aluminium activity. This sensor has a short response time of about 10s and is reproducible and stable for at least forty-five days. This proposed CWE which is designed for the first time revealed good selectivity for Al(III) over a wide variety of other cations. The performance of the sensor is best in the pH range of 3.1-5.5 and it also works well in partially non-aqueous medium. Moreover, the assembly has been successfully used as an indicator electrode in the potentiometric titration of aluminium (III) against EDTA and also in determining Al(III) quantitatively in pharmaceutical and mineral water samples.

摘要

一种基于 2-(1H-苯并[d]咪唑-1-基)-1-苯乙酮肟作为新型离子载体的用于 Al(III)离子的新型涂层丝电极 (CWE) 在碳-PVC 复合材料中被描述。该传感器在 4.3 x 10(-7) 至 5.0 x 10(-2) M 的浓度范围内对 Al(3+)离子表现出显著增强的选择性,检测限为 2.5 x 10(-7) M,Nernst 斜率为 19.41+/-0.52 mV 铝活度的十年(-1)。该传感器的响应时间约为 10s,具有良好的重现性和至少 45 天的稳定性。这种首次设计的 CWE 对 Al(III)表现出良好的选择性,对多种其他阳离子具有良好的选择性。传感器的性能在 pH 值为 3.1-5.5 的范围内最佳,在部分非水介质中也能很好地工作。此外,该组件已成功用作电位滴定法中铝 (III) 对 EDTA 的滴定指示电极,也可用于定量测定药物和矿泉水样品中的 Al(III)。

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验