基于电位调制离子转移的聚合物膜离子选择电极：超灵敏海洋 pH 值测量

IF 4.3 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Communications Pub Date : 2024-10-22 DOI:10.1039/d4cc04807e

Lu Liu, Yuanxin Liu, Tianjia Jiang, Rongning Liang, Wei Qin

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引用次数: 0

摘要

由于电位pH电极对微小pH变化的灵敏度较低，因此将其应用于海洋酸化观测仍是一项挑战。本文提出了一种基于电位调制离子转移机制的简单方法，可显著提高聚合物膜离子选择电极的检测精度。本传感策略对海水分析中的微小 pH 值变化具有高度灵敏的响应，其精度为 5 µpH，比传统 pH 电极的精度低 2 个数量级。

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Polymeric membrane ion-selective electrode based on potential-modulated ion transfer: Ultrasensitive measurement of oceanic pH

The application of a potentiometric pH electrode in ocean acidification observation is still a challenge due to its poor sensitivity to small pH changes. Herein, a simple approach to remarkably improve the detection precision of a polymeric membrane ion-selective electrode is proposed based on the potential-modulated ion transfer mechanism. The present sensing strategy displays highly sensitive responses to small pH changes for seawater analysis with a precision of 5 µpH, which is 2 orders of magnitude lower than that of the conventional pH electrode.

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来源期刊

Chemical Communications 化学-化学综合

CiteScore

8.60

自引率

4.10%

发文量

2705

审稿时长

1.4 months

期刊介绍： ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.