相关实验视频

Updated: Jun 17, 2025

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
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Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

Published on: October 7, 2020

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使用银/多-1-氨基/碳糊电极测定氨的阻抗方法

Mahmoud Fatehy Altahan1, Amr Mohamed Beltagi2, Magdi Abdel-Azzem3

  • 1Central Laboratory for Environmental Quality Monitoring, National Water Research Center, El-Qanater El-Khairia, 13621, Egypt. mahmoud_abdalqader@nwrc.gov.eg.

Scientific reports
|August 9, 2024
PubMed
概括

开发了一种使用1-aminoanthraquinone的新型银改性电极,用于敏感的电化学检测水中的. 这种方法为环境监测提供了准确和精确的量化.

关键词:
氨传感器是一个氨传感器.电化学阻抗光谱学 电化学阻抗光谱学阻抗测量传感器传感器阻抗测量传感器基于多氨基氨基的传感器基于银的传感器传感器

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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...
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The titration curve of a weak base like ammonia with a strong acid like hydrochloric acid is the mirror image of the titration curve of a weak acid with a strong base.
Using the ICE table and substituting the Kb value, we calculate the initial pH of 50 mL of 0.1 M ammonia to be 11.11. Addition of 25 mL of 0.1 M hydrochloric acid to this solution of ammonia results in a buffer with an equal concentration of ammonia and ammonium ions. The pH of this buffer can be calculated by substituting these...
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Weak acids and bases do not undergo dissociation completely, and titrations between these two are rarely studied. When such studies are performed, say, for the titration of a weak acid with a weak base, the titration curve plots the change in pH as a function of the volume of base added. Take the titration of acetic acid with ammonia, for instance. During the titration, these two species form ammonium acetate and water, but the pH change is slow and gradual.
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