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

Manoj K. Dasa | Zendy; Abubakar I. Adamu | Zendy; Jakob Janting | Zendy; Kyei Kwarkye | Zendy; Christos Markos | Zendy; Ole Bang | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

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

Author(s) -

Manoj K. Dasa,

Abubakar I. Adamu,

Jakob Janting,

Kyei Kwarkye,

Christos Markos,

Ole Bang

Publication year - 2019

Publication title -

technical university of denmark, dtu orbit (technical university of denmark, dtu)

Language(s) - English

Resource type - Conference proceedings

DOI - 10.1117/12.2510351

Subject(s) - supercontinuum , aqueous solution , overtone , photoacoustic spectroscopy , ammonia , materials science , photoacoustic imaging in biomedicine , transducer , absorption (acoustics) , analytical chemistry (journal) , optics , optoelectronics , chemistry , wavelength , acoustics , spectral line , chromatography , astronomy , physics , organic chemistry , composite material , photonic crystal fiber

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.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research