Monitoring of ammonia in an aqueous environment using a supercontinuum-based photoacoustic sensing system

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Abstract

We demonstrate a robust photoacoustic medium for measuring the concentration of ammonia in an aqueous solution. We target the near-infrared (NIR) overtone absorption band (1540 nm) of ammonia with a supercontinuum (SC) laser-based excitation system and an immersion-based acoustic transducer as the detection system. We further present how such a simple system can be used to perform effective in-situ measurements of ammonia over a range of concentrations with a sensitivity of parts per million (ppm) by volume and linearity of >96%. We demonstrate how the sensing system can be readily tailored to monitor the concentrations of other miscible gases in the aqueous solution.
Original languageEnglish
Title of host publicationProceedings of SPIE
Number of pages7
Volume10895
PublisherSPIE - International Society for Optical Engineering
Publication date2019
Article number108950L
DOIs
Publication statusPublished - 2019
EventFrontiers in Biological Detection: SPIE Conference 10895 - The Moscone Center, San Francisco, United States
Duration: 3 Feb 20194 Feb 2019

Conference

ConferenceFrontiers in Biological Detection
LocationThe Moscone Center
CountryUnited States
CitySan Francisco
Period03/02/201904/02/2019
SeriesProceedings of SPIE, the International Society for Optical Engineering
Volume10895
ISSN0277-786X

Cite this

Dasa, M. K., Adamu, A. I., Janting, J., Kwarkye, K., Markos, C., & Bang, O. (2019). Monitoring of ammonia in an aqueous environment using a supercontinuum-based photoacoustic sensing system. In Proceedings of SPIE (Vol. 10895). [108950L] SPIE - International Society for Optical Engineering. Proceedings of SPIE, the International Society for Optical Engineering, Vol.. 10895 https://doi.org/10.1117/12.2510351
Dasa, Manoj Kumar ; Adamu, Abubakar Isa ; Janting, Jakob ; Kwarkye, Kyei ; Markos, Christos ; Bang, Ole. / Monitoring of ammonia in an aqueous environment using a supercontinuum-based photoacoustic sensing system. Proceedings of SPIE. Vol. 10895 SPIE - International Society for Optical Engineering, 2019. (Proceedings of SPIE, the International Society for Optical Engineering, Vol. 10895).
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abstract = "We demonstrate a robust photoacoustic medium for measuring the concentration of ammonia in an aqueous solution. We target the near-infrared (NIR) overtone absorption band (1540 nm) of ammonia with a supercontinuum (SC) laser-based excitation system and an immersion-based acoustic transducer as the detection system. We further present how such a simple system can be used to perform effective in-situ measurements of ammonia over a range of concentrations with a sensitivity of parts per million (ppm) by volume and linearity of >96{\%}. We demonstrate how the sensing system can be readily tailored to monitor the concentrations of other miscible gases in the aqueous solution.",
author = "Dasa, {Manoj Kumar} and Adamu, {Abubakar Isa} and Jakob Janting and Kyei Kwarkye and Christos Markos and Ole Bang",
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Dasa, MK, Adamu, AI, Janting, J, Kwarkye, K, Markos, C & Bang, O 2019, Monitoring of ammonia in an aqueous environment using a supercontinuum-based photoacoustic sensing system. in Proceedings of SPIE. vol. 10895, 108950L, SPIE - International Society for Optical Engineering, Proceedings of SPIE, the International Society for Optical Engineering, vol. 10895, Frontiers in Biological Detection, San Francisco, United States, 03/02/2019. https://doi.org/10.1117/12.2510351

Monitoring of ammonia in an aqueous environment using a supercontinuum-based photoacoustic sensing system. / Dasa, Manoj Kumar; Adamu, Abubakar Isa; Janting, Jakob; Kwarkye, Kyei; Markos, Christos; Bang, Ole.

Proceedings of SPIE. Vol. 10895 SPIE - International Society for Optical Engineering, 2019. 108950L (Proceedings of SPIE, the International Society for Optical Engineering, Vol. 10895).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Dasa MK, Adamu AI, Janting J, Kwarkye K, Markos C, Bang O. Monitoring of ammonia in an aqueous environment using a supercontinuum-based photoacoustic sensing system. In Proceedings of SPIE. Vol. 10895. SPIE - International Society for Optical Engineering. 2019. 108950L. (Proceedings of SPIE, the International Society for Optical Engineering, Vol. 10895). https://doi.org/10.1117/12.2510351