Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 16, issue 22
Articles | Volume 16, issue 22
https://doi.org/10.5194/amt-16-5525-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-16-5525-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 22
Research article
 | 
18 Nov 2023
Research article |  | 18 Nov 2023

Colorimetric derivatization of ambient ammonia (NH3) for detection by long-path absorption photometry

Shasha Tian, Kexin Zu, Huabin Dong, Limin Zeng, Keding Lu, and Qi Chen

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Short summary
We developed an online NH3 monitoring system based on a selective colorimetric reaction and a long-path absorption photometer (SAC-LOPAP), which can run statically for a long time and be applied to the continuous online measurement of low concentrations of ambient air by optimizing the reaction conditions, adding a constant-temperature module and liquid flow controller. It is well suited for the investigation of the NH3 budget for urban to rural conditions in China.
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