Photoacoustic spectroscopy using a quantum cascade laser for analysis of ammonia in water solutions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00587074" target="_blank" >RIV/68378271:_____/24:00587074 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0354376" target="_blank" >https://hdl.handle.net/11104/0354376</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsomega.3c10175" target="_blank" >10.1021/acsomega.3c10175</a>
Alternative languages
Result language
angličtina
Original language name
Photoacoustic spectroscopy using a quantum cascade laser for analysis of ammonia in water solutions
Original language description
Ammonia (NH3) toxicity, stemming from nitrification, can adversely affect aquatic life and influence the taste and odor of drinking water. This underscores the necessity for highly responsive and accurate sensors to continuously monitor NH3 levels in water, especially in complex environments where reliable sensors have been lacking until this point. Herein, we detail the development of a sensor comprising a compact and selective analyzer with low gas consumption and a timely response, based on photoacoustic spectroscopy. This, combined with an automated liquid sampling system, enables the precise detection of ammonia traces in water. The sensor system incorporates a state-of-the art quantum cascade laser as the excitation source emitting at 9 μm in resonance with the absorption line of NH3 located at 1103.46 cm-1. Our instrument demonstrated detection sensitivity at low ppm level for ammonia molecule with response times less than 60 seconds. For the sampling system, an ammonia stripping solution was designed resulting in a prompt full measurement cycle (6.35 min). A further evaluation of the sensor within a pilot study showed good reliability and agreement with the reference method for real water samples, confirming the potential of our NH3 analyzer for water-quality monitoring applications.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Omega
ISSN
2470-1343
e-ISSN
2470-1343
Volume of the periodical
9
Issue of the periodical within the volume
17
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
19127-19135
UT code for WoS article
001242265300001
EID of the result in the Scopus database
2-s2.0-85191811400