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Updated: Jan 21, 2026

Ammonia Synthesis at Low Pressure
Published on: August 23, 2017
Ammonia gas sensors: A comprehensive review.
Dongwook Kwak1, Yu Lei2, Radenka Maric3
1Institute of Materials Science, 97 North Eagleville Road, University of Connecticut, Storrs, CT, 06269, USA; Center for Clean Energy Engineering, 44 Weaver Road, CT, 06269, USA.
Accurate ammonia gas detection is crucial for industry and safety. This review covers sensing techniques like electronics and spectroscopy, highlighting recent advancements in high-performance ammonia sensors.
Area of Science:
- Environmental Science
- Chemical Engineering
- Materials Science
Background:
- Ammonia gas is vital in industry but poses health and environmental risks.
- Sensitive, selective, and accurate detection methods are in high demand.
- Existing sensing techniques require continuous improvement for safety and efficiency.
Purpose of the Study:
- To review and summarize widely used ammonia gas sensing techniques.
- To discuss the fundamental principles of various detection methods.
- To present recent progress and future outlook for advanced ammonia sensors.
Main Methods:
- Review of electronic sensing techniques.
- Analysis of electrochemical sensing methods.
- Discussion of tunable diode laser spectroscopy (TDLS).
- Exploration of surface acoustic wave (SAW) sensors.
- Examination of field-effect transistor (FET) based sensors.
- Inclusion of various sensing materials.
Main Results:
- Overview of established ammonia detection principles.
- Summary of recent developments in sensor materials and designs.
- Identification of key performance metrics for ammonia sensors.
- Analysis of sensor advantages and limitations.
Conclusions:
- Advanced ammonia gas sensors are crucial for industrial applications and environmental monitoring.
- Continued research into novel sensing materials and techniques is essential.
- Future developments aim for enhanced sensitivity, selectivity, and long-term stability.
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