Reflectance based optical fibre sensor for ammonium ion using solid-state Riegler's reagent

A new optical sensor for fast screening of ammonium (NH4+) ion was developed based on immobilisation of p-nitrobenzene-diazonium chloride (Riegler's reagent) onto XAD-7 microbeads. In aqueous solution, the diazonium salt is unstable and will spontaneously decompose at room temperature but we ha...

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Bibliographic Details

Main Authors:	Ling, TL, Ahmad, M, Heng, LY
Format:	Article
Language:	English en_US
Published:	Elsevier Science Sa 2024
Subjects:	Optical sensor Ammonium ion XAD-7 beads p-Nitrobenzene-diazonium chloride Reflectance spectrophotometry Optical fibre
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