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相关概念视频

Amperometry: Overview01:10

Amperometry: Overview

536
Amperometry is a technique commonly used to measure the concentration of specific analytes in a solution by monitoring the electric current generated during an electrochemical reaction. It involves applying a constant potential between a working electrode and a reference electrode to measure the resulting current, which is proportional to the concentration of the analyte. The Clark oxygen electrode operates based on this principle of amperometry. It consists of a cathode and an anode enclosed...
536
Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

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Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
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相关实验视频

Updated: Jun 29, 2025

Manufacturing of a Nafion-coated, Reduced Graphene Oxide/Polyaniline Chemiresistive Sensor to Monitor pH in Real-time During Microbial Fermentation
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一个毛细管辅助的微纤维布拉格格 pH 传感器用于水电技术.

Yongkang Zhang1, Heyi Xia2, Qiaochu Yang1

  • 1Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, 510632, China; College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, 510632, China.

Talanta
|April 4, 2024
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概括

一个新的微型光纤pH探针能够精确地测量来自水电装置的超小水样中的离子. 这一突破有助于对新兴的能源采集技术进行描述.

关键词:
布拉格格的格子格子.光纤传感器是光纤传感器.水电发电系统是水电发电.微纤维探针的探测器小水样检测 小水样检测一个pH值传感器.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 收集能源 收集能源
  • 传感器技术 传感器技术

背景情况:

  • 水电技术从水中产生能量,但由于样本体积小,在量化离子方面面临挑战.
  • 现有的方法不足以分析微小水电系统中微量离子.

研究的目的:

  • 开发一个微型光纤pH探针,用于精确检测超小水样中的离子.
  • 为了使水电微设备的有效表征和监测.

主要方法:

  • 一个单边缩的微纤维布拉格格 (μFBG) 用基酸盐对pH敏感性进行了功能化.
  • FBG传感器被封装在采样毛细血管中,用于检测微量样品 (<2μL).

主要成果:

  • 缩-μFBG传感器显示出高pH灵敏度 (62.8 p.m./pH) 和低分辨率极限 (0.096 pH).
  • 传感器成功监测和表征了一种水电微器件,将pH与微电流产生相关联.

结论:

  • 开发的微型光纤pH探针是分析水电,材料科学,能源,生物学和医学领域的微样本的一个有希望的工具.
  • 这项技术解决了在微流体系统中检测和表征微量分析物的关键需求.